2000-02-05 09:19:06 +00:00
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/* packet-vtp.c
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* Routines for the disassembly of Cisco's Virtual Trunking Protocol
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*
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2000-05-11 08:18:09 +00:00
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* $Id: packet-vtp.c,v 1.3 2000/05/11 08:15:55 gram Exp $
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2000-02-05 09:19:06 +00:00
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@zing.org>
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* Copyright 1998 Gerald Combs
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <glib.h>
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#include "packet.h"
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/*
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* See
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*
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* http://www.cisco.com/univercd/cc/td/doc/product/lan/trsrb/frames.htm
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*
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* for some information on VTP.
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*
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* It's incomplete, and it appears to be inaccurate in a number of places,
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* but it's all I could find....
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*/
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static int proto_vtp = -1;
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static int hf_vtp_version = -1;
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static int hf_vtp_code = -1;
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static int hf_vtp_followers = -1;
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static int hf_vtp_md_len = -1;
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static int hf_vtp_md = -1;
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static int hf_vtp_conf_rev_num = -1;
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static int hf_vtp_upd_id = -1;
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static int hf_vtp_upd_ts = -1;
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static int hf_vtp_md5_digest = -1;
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static int hf_vtp_seq_num = -1;
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static int hf_vtp_start_value = -1;
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static int hf_vtp_vlan_info_len = -1;
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static int hf_vtp_vlan_status_vlan_susp = -1;
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static int hf_vtp_vlan_type = -1;
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static int hf_vtp_vlan_name_len = -1;
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static int hf_vtp_isl_vlan_id = -1;
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static int hf_vtp_mtu_size = -1;
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static int hf_vtp_802_10_index = -1;
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static int hf_vtp_vlan_name = -1;
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static int hf_vtp_vlan_tlvtype = -1;
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static int hf_vtp_vlan_tlvlength = -1;
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static gint ett_vtp = -1;
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static gint ett_vtp_vlan_info = -1;
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static gint ett_vtp_vlan_status = -1;
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static gint ett_vtp_tlv = -1;
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static int
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dissect_vlan_info(const u_char *pd, int offset, proto_tree *tree);
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static void
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dissect_vlan_info_tlv(const u_char *pd, int offset, int length,
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proto_tree *tree, proto_item *ti, guint8 type);
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#define SUMMARY_ADVERT 0x01
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#define SUBSET_ADVERT 0x02
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#define ADVERT_REQUEST 0x03
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static const value_string type_vals[] = {
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{ SUMMARY_ADVERT, "Summary-Advert" },
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{ SUBSET_ADVERT, "Subset-Advert" },
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{ ADVERT_REQUEST, "Advert-Request" },
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{ 0, NULL },
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};
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void
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dissect_vtp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
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{
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proto_item *ti;
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proto_tree *vtp_tree = NULL;
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guint8 code;
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guint8 md_len;
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int vlan_info_len;
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if (check_col(fd, COL_PROTOCOL))
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col_add_str(fd, COL_PROTOCOL, "VTP");
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if (check_col(fd, COL_INFO))
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col_add_str(fd, COL_INFO, "Virtual Trunking Protocol");
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if (tree) {
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2000-05-11 08:18:09 +00:00
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ti = proto_tree_add_item(tree, proto_vtp, NullTVB, offset, END_OF_FRAME,
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2000-02-05 09:19:06 +00:00
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NULL);
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vtp_tree = proto_item_add_subtree(ti, ett_vtp);
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2000-05-11 08:18:09 +00:00
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proto_tree_add_item(vtp_tree, hf_vtp_version, NullTVB, offset, 1,
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2000-02-05 09:19:06 +00:00
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pd[offset]);
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offset += 1;
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code = pd[offset];
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2000-05-11 08:18:09 +00:00
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proto_tree_add_item(vtp_tree, hf_vtp_code, NullTVB, offset, 1,
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2000-02-05 09:19:06 +00:00
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code);
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offset += 1;
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switch (code) {
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case SUMMARY_ADVERT:
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2000-05-11 08:18:09 +00:00
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proto_tree_add_item(vtp_tree, hf_vtp_followers, NullTVB, offset,
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2000-02-05 09:19:06 +00:00
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1, pd[offset]);
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offset += 1;
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md_len = pd[offset];
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2000-05-11 08:18:09 +00:00
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proto_tree_add_item(vtp_tree, hf_vtp_md_len, NullTVB, offset,
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2000-02-05 09:19:06 +00:00
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1, md_len);
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offset += 1;
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2000-05-11 08:18:09 +00:00
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proto_tree_add_string_format(vtp_tree, hf_vtp_md, NullTVB, offset,
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2000-02-05 09:19:06 +00:00
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32, &pd[offset], "Management Domain: %.32s",
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&pd[offset]);
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offset += 32;
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2000-05-11 08:18:09 +00:00
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proto_tree_add_item(vtp_tree, hf_vtp_conf_rev_num, NullTVB,
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2000-02-05 09:19:06 +00:00
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offset, 4, pntohl(&pd[offset]));
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offset += 4;
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2000-05-11 08:18:09 +00:00
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proto_tree_add_item(vtp_tree, hf_vtp_upd_id, NullTVB,
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2000-02-05 09:19:06 +00:00
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offset, 4, &pd[offset]);
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offset += 4;
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2000-05-11 08:18:09 +00:00
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proto_tree_add_string_format(vtp_tree, hf_vtp_upd_ts, NullTVB,
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2000-02-05 09:19:06 +00:00
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offset, 12, &pd[offset],
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"Update Timestamp: %.2s-%.2s-%.2s %.2s:%.2s:%.2s",
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&pd[offset], &pd[offset+2], &pd[offset+4],
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&pd[offset+6], &pd[offset+8], &pd[offset+10]);
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offset += 12;
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2000-05-11 08:18:09 +00:00
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proto_tree_add_item(vtp_tree, hf_vtp_md5_digest, NullTVB,
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2000-02-05 09:19:06 +00:00
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offset, 16, &pd[offset]);
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break;
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case SUBSET_ADVERT:
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2000-05-11 08:18:09 +00:00
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proto_tree_add_item(vtp_tree, hf_vtp_seq_num, NullTVB, offset,
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2000-02-05 09:19:06 +00:00
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1, pd[offset]);
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offset += 1;
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md_len = pd[offset];
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2000-05-11 08:18:09 +00:00
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proto_tree_add_item(vtp_tree, hf_vtp_md_len, NullTVB, offset,
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2000-02-05 09:19:06 +00:00
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1, md_len);
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offset += 1;
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2000-05-11 08:18:09 +00:00
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proto_tree_add_string_format(vtp_tree, hf_vtp_md, NullTVB, offset,
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2000-02-05 09:19:06 +00:00
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32, &pd[offset], "Management Domain: %.32s",
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&pd[offset]);
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offset += 32;
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2000-05-11 08:18:09 +00:00
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proto_tree_add_item(vtp_tree, hf_vtp_conf_rev_num, NullTVB,
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2000-02-05 09:19:06 +00:00
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offset, 4, pntohl(&pd[offset]));
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offset += 4;
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for (;;) {
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vlan_info_len =
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dissect_vlan_info(pd, offset, vtp_tree);
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if (vlan_info_len < 0)
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break;
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offset += vlan_info_len;
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}
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break;
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case ADVERT_REQUEST:
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offset += 1; /* skip reserved field */
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md_len = pd[offset];
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2000-05-11 08:18:09 +00:00
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proto_tree_add_item(vtp_tree, hf_vtp_md_len, NullTVB, offset,
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2000-02-05 09:19:06 +00:00
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1, md_len);
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offset += 1;
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2000-05-11 08:18:09 +00:00
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proto_tree_add_item(vtp_tree, hf_vtp_start_value, NullTVB,
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2000-02-05 09:19:06 +00:00
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offset, 2, pntohs(&pd[offset]));
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break;
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case 0x04:
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/*
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* Mysterious type, seen a lot.
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* Is this some mutant variant of Advert-Request?
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*/
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offset += 1; /* skip unknown field */
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md_len = pd[offset];
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2000-05-11 08:18:09 +00:00
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proto_tree_add_item(vtp_tree, hf_vtp_md_len, NullTVB, offset,
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2000-02-05 09:19:06 +00:00
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1, md_len);
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offset += 1;
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2000-05-11 08:18:09 +00:00
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proto_tree_add_string_format(vtp_tree, hf_vtp_md, NullTVB, offset,
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2000-02-05 09:19:06 +00:00
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32, &pd[offset], "Management Domain: %.32s",
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&pd[offset]);
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offset += 32;
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offset += 2; /* skip unknown field */
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2000-05-11 08:18:09 +00:00
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proto_tree_add_text(vtp_tree, NullTVB, offset, 2,
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2000-02-05 09:19:06 +00:00
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"VLAN ID of some sort: 0x%04x",
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pntohs(&pd[offset]));
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offset += 2;
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break;
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}
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}
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}
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#define VLAN_SUSPENDED 0x01
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static const value_string vlan_type_vals[] = {
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{ 0x01, "Ethernet" },
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{ 0x02, "FDDI" },
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{ 0x03, "TrCRF" },
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{ 0x04, "FDDI-net" },
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{ 0x05, "TrBRF" },
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{ 0, NULL },
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};
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#define SR_RING_NUM 0x01
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#define SR_BRIDGE_NUM 0x02
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#define STP_TYPE 0x03
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#define PARENT_VLAN 0x04
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#define TR_BRIDGED_VLANS 0x05
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#define PRUNING 0x06
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#define BRIDGE_TYPE 0x07
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#define MAX_ARE_HOP_CNT 0x08
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#define MAX_STE_HOP_CNT 0x09
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#define BACKUP_CRF_MODE 0x0A
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static const value_string vlan_tlv_type_vals[] = {
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{ SR_RING_NUM, "Source-Routing Ring Number" },
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{ SR_BRIDGE_NUM, "Source-Routing Bridge Number" },
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{ STP_TYPE, "Spanning-Tree Protocol Type" },
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{ PARENT_VLAN, "Parent VLAN" },
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{ TR_BRIDGED_VLANS, "Translationally Bridged VLANs" },
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{ PRUNING, "Pruning" },
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{ BRIDGE_TYPE, "Bridge Type" },
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{ MAX_ARE_HOP_CNT, "Max ARE Hop Count" },
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{ MAX_STE_HOP_CNT, "Max STE Hop Count" },
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{ BACKUP_CRF_MODE, "Backup CRF Mode" },
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{ 0, NULL },
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};
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static int
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dissect_vlan_info(const u_char *pd, int offset, proto_tree *tree)
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{
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proto_item *ti;
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proto_tree *vlan_info_tree;
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proto_tree *status_tree;
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guint8 vlan_info_len;
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int vlan_info_left;
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guint8 status;
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guint8 vlan_name_len;
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guint16 type;
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int length;
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char *type_str;
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proto_tree *tlv_tree;
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if (!BYTES_ARE_IN_FRAME(offset, 1))
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return -1;
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vlan_info_len = pd[offset];
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2000-05-11 08:18:09 +00:00
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ti = proto_tree_add_text(tree, NullTVB, offset, vlan_info_len,
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2000-02-05 09:19:06 +00:00
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"VLAN Information");
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vlan_info_tree = proto_item_add_subtree(ti, ett_vtp_vlan_info);
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vlan_info_left = vlan_info_len;
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2000-05-11 08:18:09 +00:00
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proto_tree_add_item(vlan_info_tree, hf_vtp_vlan_info_len, NullTVB, offset, 1,
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2000-02-05 09:19:06 +00:00
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vlan_info_len);
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offset += 1;
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vlan_info_left -= 1;
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if (!BYTES_ARE_IN_FRAME(offset, 1) || vlan_info_left < 1)
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return -1;
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status = pd[offset];
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2000-05-11 08:18:09 +00:00
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ti = proto_tree_add_text(vlan_info_tree, NullTVB, offset, 1,
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2000-02-05 09:19:06 +00:00
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"Status: 0x%02x%s", status,
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(status & VLAN_SUSPENDED) ? "(VLAN suspended)" : "");
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status_tree = proto_item_add_subtree(ti, ett_vtp_vlan_status);
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2000-05-11 08:18:09 +00:00
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proto_tree_add_item(status_tree, hf_vtp_vlan_status_vlan_susp, NullTVB, offset, 1,
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2000-02-05 09:19:06 +00:00
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status);
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offset += 1;
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vlan_info_left -= 1;
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if (!BYTES_ARE_IN_FRAME(offset, 1) || vlan_info_left < 1)
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return -1;
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2000-05-11 08:18:09 +00:00
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proto_tree_add_item(vlan_info_tree, hf_vtp_vlan_type, NullTVB, offset, 1,
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2000-02-05 09:19:06 +00:00
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pd[offset]);
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offset += 1;
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vlan_info_left -= 1;
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if (!BYTES_ARE_IN_FRAME(offset, 1) || vlan_info_left < 1)
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return -1;
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vlan_name_len = pd[offset];
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2000-05-11 08:18:09 +00:00
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|
|
proto_tree_add_item(vlan_info_tree, hf_vtp_vlan_name_len, NullTVB, offset, 1,
|
2000-02-05 09:19:06 +00:00
|
|
|
vlan_name_len);
|
|
|
|
offset += 1;
|
|
|
|
vlan_info_left -= 1;
|
|
|
|
|
|
|
|
if (!BYTES_ARE_IN_FRAME(offset, 2) || vlan_info_left < 2)
|
|
|
|
return -1;
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_item(vlan_info_tree, hf_vtp_isl_vlan_id, NullTVB, offset, 2,
|
2000-02-05 09:19:06 +00:00
|
|
|
pntohs(&pd[offset]));
|
|
|
|
offset += 2;
|
|
|
|
vlan_info_left -= 2;
|
|
|
|
|
|
|
|
if (!BYTES_ARE_IN_FRAME(offset, 2) || vlan_info_left < 2)
|
|
|
|
return -1;
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_item(vlan_info_tree, hf_vtp_mtu_size, NullTVB, offset, 2,
|
2000-02-05 09:19:06 +00:00
|
|
|
pntohs(&pd[offset]));
|
|
|
|
offset += 2;
|
|
|
|
vlan_info_left -= 2;
|
|
|
|
|
|
|
|
if (!BYTES_ARE_IN_FRAME(offset, 4) || vlan_info_left < 4)
|
|
|
|
return -1;
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_item(vlan_info_tree, hf_vtp_802_10_index, NullTVB, offset, 4,
|
2000-02-05 09:19:06 +00:00
|
|
|
pntohl(&pd[offset]));
|
|
|
|
offset += 4;
|
|
|
|
vlan_info_left -= 4;
|
|
|
|
|
|
|
|
/* VLAN name length appears to be rounded up to a multiple of
|
|
|
|
4. */
|
|
|
|
vlan_name_len = 4*((vlan_name_len + 3)/4);
|
|
|
|
if (!BYTES_ARE_IN_FRAME(offset, vlan_name_len)
|
|
|
|
|| vlan_info_left < vlan_name_len)
|
|
|
|
return -1;
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_string_format(vlan_info_tree, hf_vtp_vlan_name, NullTVB, offset,
|
2000-02-05 09:19:06 +00:00
|
|
|
vlan_name_len, &pd[offset], "VLAN Name: %.*s", vlan_name_len,
|
|
|
|
&pd[offset]);
|
|
|
|
offset += vlan_name_len;
|
|
|
|
vlan_info_left -= vlan_name_len;
|
|
|
|
|
|
|
|
while (IS_DATA_IN_FRAME(offset) && vlan_info_left > 0) {
|
|
|
|
type = pd[offset + 0];
|
|
|
|
length = pd[offset + 1];
|
|
|
|
type_str = val_to_str(type, vlan_tlv_type_vals,
|
|
|
|
"Unknown (0x%04x)");
|
|
|
|
|
2000-05-11 08:18:09 +00:00
|
|
|
ti = proto_tree_add_notext(vlan_info_tree, NullTVB, offset,
|
2000-02-05 09:19:06 +00:00
|
|
|
2 + length*2);
|
|
|
|
tlv_tree = proto_item_add_subtree(ti, ett_vtp_tlv);
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_item(tlv_tree, hf_vtp_vlan_tlvtype, NullTVB, offset,
|
2000-02-05 09:19:06 +00:00
|
|
|
1, type);
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_item(tlv_tree, hf_vtp_vlan_tlvlength, NullTVB, offset+1,
|
2000-02-05 09:19:06 +00:00
|
|
|
1, length);
|
|
|
|
offset += 2;
|
|
|
|
vlan_info_left -= 2;
|
|
|
|
if (length > 0) {
|
|
|
|
dissect_vlan_info_tlv(pd, offset, length*2, tlv_tree,
|
|
|
|
ti, type);
|
|
|
|
}
|
|
|
|
offset += length*2;
|
|
|
|
vlan_info_left -= length*2;
|
|
|
|
}
|
|
|
|
|
|
|
|
return vlan_info_len;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const value_string stp_type_vals[] = {
|
|
|
|
{ 1, "SRT" },
|
|
|
|
{ 2, "SRB" },
|
|
|
|
{ 3, "Auto" },
|
|
|
|
{ 0, NULL },
|
|
|
|
};
|
|
|
|
|
|
|
|
static const value_string pruning_vals[] = {
|
|
|
|
{ 1, "Enabled" },
|
|
|
|
{ 2, "Disabled" },
|
|
|
|
{ 0, NULL },
|
|
|
|
};
|
|
|
|
|
|
|
|
static const value_string bridge_type_vals[] = {
|
|
|
|
{ 1, "SRT" },
|
|
|
|
{ 2, "SRB" },
|
|
|
|
{ 0, NULL },
|
|
|
|
};
|
|
|
|
|
|
|
|
static const value_string backup_crf_mode_vals[] = {
|
|
|
|
{ 1, "TrCRF is configured as a backup" },
|
|
|
|
{ 2, "TrCRF is not configured as a backup" },
|
|
|
|
{ 0, NULL },
|
|
|
|
};
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_vlan_info_tlv(const u_char *pd, int offset, int length,
|
|
|
|
proto_tree *tree, proto_item *ti, guint8 type)
|
|
|
|
{
|
|
|
|
switch (type) {
|
|
|
|
|
|
|
|
case SR_RING_NUM:
|
|
|
|
if (length == 2) {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Source-Routing Ring Number: 0x%04x",
|
|
|
|
pntohs(&pd[offset]));
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, 2,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Source-Routing Ring Number: 0x%04x",
|
|
|
|
pntohs(&pd[offset]));
|
|
|
|
} else {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Source-Routing Ring Number: Bad length %u",
|
|
|
|
length);
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, length,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Source-Routing Ring Number: Bad length %u",
|
|
|
|
length);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SR_BRIDGE_NUM:
|
|
|
|
if (length == 2) {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Source-Routing Bridge Number: 0x%04x",
|
|
|
|
pntohs(&pd[offset]));
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, 2,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Source-Routing Bridge Number: 0x%04x",
|
|
|
|
pntohs(&pd[offset]));
|
|
|
|
} else {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Source-Routing Bridge Number: Bad length %u",
|
|
|
|
length);
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, length,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Source-Routing Bridge Number: Bad length %u",
|
|
|
|
length);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case STP_TYPE:
|
|
|
|
if (length == 2) {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Spanning-Tree Protocol Type: %s",
|
|
|
|
val_to_str(pntohs(&pd[offset]), stp_type_vals,
|
|
|
|
"Unknown (0x%04x)"));
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, 2,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Spanning-Tree Protocol Type: %s",
|
|
|
|
val_to_str(pntohs(&pd[offset]), stp_type_vals,
|
|
|
|
"Unknown (0x%04x)"));
|
|
|
|
} else {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Spanning-Tree Protocol Type: Bad length %u",
|
|
|
|
length);
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, length,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Spanning-Tree Protocol Type: Bad length %u",
|
|
|
|
length);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case PARENT_VLAN:
|
|
|
|
if (length == 2) {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Parent VLAN: 0x%04x",
|
|
|
|
pntohs(&pd[offset]));
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, 2,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Parent VLAN: 0x%04x",
|
|
|
|
pntohs(&pd[offset]));
|
|
|
|
} else {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Parent VLAN: Bad length %u",
|
|
|
|
length);
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, length,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Parent VLAN: Bad length %u",
|
|
|
|
length);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case TR_BRIDGED_VLANS:
|
|
|
|
if (length == 2) {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Translationally Bridged VLANs: 0x%04x",
|
|
|
|
pntohs(&pd[offset]));
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, 2,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Translationally Bridged VLANs: 0x%04x",
|
|
|
|
pntohs(&pd[offset]));
|
|
|
|
} else {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Translationally Bridged VLANs: Bad length %u",
|
|
|
|
length);
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, length,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Translationally Bridged VLANs: Bad length %u",
|
|
|
|
length);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case PRUNING:
|
|
|
|
if (length == 2) {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Pruning: %s",
|
|
|
|
val_to_str(pntohs(&pd[offset]), pruning_vals,
|
|
|
|
"Unknown (0x%04x)"));
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, 2,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Pruning: %s",
|
|
|
|
val_to_str(pntohs(&pd[offset]), pruning_vals,
|
|
|
|
"Unknown (0x%04x)"));
|
|
|
|
} else {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Pruning: Bad length %u",
|
|
|
|
length);
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, length,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Pruning: Bad length %u",
|
|
|
|
length);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BRIDGE_TYPE:
|
|
|
|
if (length == 2) {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Bridge Type: %s",
|
|
|
|
val_to_str(pntohs(&pd[offset]), bridge_type_vals,
|
|
|
|
"Unknown (0x%04x)"));
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, 2,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Bridge Type: %s",
|
|
|
|
val_to_str(pntohs(&pd[offset]), bridge_type_vals,
|
|
|
|
"Unknown (0x%04x)"));
|
|
|
|
} else {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Bridge Type: Bad length %u",
|
|
|
|
length);
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, length,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Bridge Type: Bad length %u",
|
|
|
|
length);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case MAX_ARE_HOP_CNT:
|
|
|
|
if (length == 2) {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Max ARE Hop Count: %u",
|
|
|
|
pntohs(&pd[offset]));
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, 2,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Max ARE Hop Count: %u",
|
|
|
|
pntohs(&pd[offset]));
|
|
|
|
} else {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Max ARE Hop Count: Bad length %u",
|
|
|
|
length);
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, length,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Max ARE Hop Count: Bad length %u",
|
|
|
|
length);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case MAX_STE_HOP_CNT:
|
|
|
|
if (length == 2) {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Max STE Hop Count: %u",
|
|
|
|
pntohs(&pd[offset]));
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, 2,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Max STE Hop Count: %u",
|
|
|
|
pntohs(&pd[offset]));
|
|
|
|
} else {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Max STE Hop Count: Bad length %u",
|
|
|
|
length);
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, length,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Max STE Hop Count: Bad length %u",
|
|
|
|
length);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BACKUP_CRF_MODE:
|
|
|
|
if (length == 2) {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Backup CRF Mode: %s",
|
|
|
|
val_to_str(pntohs(&pd[offset]), backup_crf_mode_vals,
|
|
|
|
"Unknown (0x%04x)"));
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, 2,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Backup CRF Mode: %s",
|
|
|
|
val_to_str(pntohs(&pd[offset]), backup_crf_mode_vals,
|
|
|
|
"Unknown (0x%04x)"));
|
|
|
|
} else {
|
|
|
|
proto_item_set_text(ti,
|
|
|
|
"Backup CRF Mode: Bad length %u",
|
|
|
|
length);
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, length,
|
2000-02-05 09:19:06 +00:00
|
|
|
"Backup CRF Mode: Bad length %u",
|
|
|
|
length);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
proto_item_set_text(ti, "Unknown TLV type: 0x%02x", type);
|
2000-05-11 08:18:09 +00:00
|
|
|
proto_tree_add_text(tree, NullTVB, offset, length, "Data");
|
2000-02-05 09:19:06 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
proto_register_vtp(void)
|
|
|
|
{
|
|
|
|
static hf_register_info hf[] = {
|
|
|
|
{ &hf_vtp_version,
|
|
|
|
{ "Version", "vtp.version", FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
|
|
"" }},
|
|
|
|
|
|
|
|
{ &hf_vtp_code,
|
|
|
|
{ "Code", "vtp.code", FT_UINT8, BASE_HEX, VALS(type_vals), 0x0,
|
|
|
|
"" }},
|
|
|
|
|
|
|
|
{ &hf_vtp_followers,
|
|
|
|
{ "Followers", "vtp.followers", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
|
|
"Number of following Subset-Advert messages" }},
|
|
|
|
|
|
|
|
{ &hf_vtp_md_len,
|
|
|
|
{ "Management Domain Length", "vtp.md_len", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
|
|
"Length of management domain string" }},
|
|
|
|
|
|
|
|
{ &hf_vtp_md,
|
|
|
|
{ "Management Domain", "vtp.md", FT_STRING, BASE_DEC, NULL, 0,
|
|
|
|
"Management domain" }},
|
|
|
|
|
|
|
|
{ &hf_vtp_conf_rev_num,
|
|
|
|
{ "Configuration Revision Number", "vtp.conf_rev_num", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
|
|
"Revision number of the configuration information" }},
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{ &hf_vtp_upd_id,
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{ "Updater Identity", "vtp.upd_id", FT_IPv4, BASE_NONE, NULL, 0x0,
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"IP address of the updater" }},
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{ &hf_vtp_upd_ts,
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{ "Update Timestamp", "vtp.upd_ts", FT_STRING, BASE_DEC, NULL, 0,
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"Time stamp of the current configuration revision" }},
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{ &hf_vtp_md5_digest,
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{ "MD5 Digest", "vtp.md5_digest", FT_BYTES, BASE_HEX, NULL, 0x0,
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"" }},
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{ &hf_vtp_seq_num,
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{ "Sequence Number", "vtp.seq_num", FT_UINT8, BASE_DEC, NULL, 0x0,
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"Order of this frame in the sequence of Subset-Advert frames" }},
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{ &hf_vtp_start_value,
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{ "Start Value", "vtp.start_value", FT_UINT16, BASE_HEX, NULL, 0x0,
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"Virtual LAN ID of first VLAN for which information is requested" }},
|
|
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{ &hf_vtp_vlan_info_len,
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{ "VLAN Information Length", "vtp.vlan_info.len", FT_UINT8, BASE_DEC, NULL, 0x0,
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|
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"Length of the VLAN information field" }},
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|
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{ &hf_vtp_vlan_status_vlan_susp,
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{ "VLAN suspended", "vtp.vlan_info.status.vlan_susp", FT_BOOLEAN, 8, NULL, VLAN_SUSPENDED,
|
|
|
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"VLAN suspended" }},
|
|
|
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|
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{ &hf_vtp_vlan_type,
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|
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{ "VLAN Type", "vtp.vlan_info.vlan_type", FT_UINT8, BASE_HEX, VALS(vlan_type_vals), 0x0,
|
|
|
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"Type of VLAN" }},
|
|
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|
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{ &hf_vtp_vlan_name_len,
|
|
|
|
{ "VLAN Name Length", "vtp.vlan_info.vlan_name_len", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
|
|
"Length of VLAN name string" }},
|
|
|
|
|
|
|
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{ &hf_vtp_isl_vlan_id,
|
|
|
|
{ "ISL VLAN ID", "vtp.vlan_info.isl_vlan_id", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
|
|
"ID of this VLAN on ISL trunks" }},
|
|
|
|
|
|
|
|
{ &hf_vtp_mtu_size,
|
|
|
|
{ "MTU Size", "vtp.vlan_info.mtu_size", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
|
|
"MTU for this VLAN" }},
|
|
|
|
|
|
|
|
{ &hf_vtp_802_10_index,
|
|
|
|
{ "802.10 Index", "vtp.vlan_info.802_10_index", FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
|
|
"IEEE 802.10 security association identifier for this VLAN" }},
|
|
|
|
|
|
|
|
{ &hf_vtp_vlan_name,
|
|
|
|
{ "VLAN Name", "vtp.vlan_info.vlan_name", FT_STRING, BASE_DEC, NULL, 0,
|
|
|
|
"VLAN name" }},
|
|
|
|
|
|
|
|
{ &hf_vtp_vlan_tlvtype,
|
|
|
|
{ "Type", "vtp.vlan_info.tlv_type", FT_UINT8, BASE_HEX, VALS(vlan_tlv_type_vals), 0x0,
|
|
|
|
"" }},
|
|
|
|
|
|
|
|
{ &hf_vtp_vlan_tlvlength,
|
|
|
|
{ "Length", "vtp.vlan_info.tlv_len", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
|
|
"" }},
|
|
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
|
|
&ett_vtp,
|
|
|
|
&ett_vtp_vlan_info,
|
|
|
|
&ett_vtp_vlan_status,
|
|
|
|
&ett_vtp_tlv,
|
|
|
|
};
|
|
|
|
|
|
|
|
proto_vtp = proto_register_protocol("Virtual Trunking Protocol", "vtp");
|
|
|
|
proto_register_field_array(proto_vtp, hf, array_length(hf));
|
|
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
}
|