697 lines
21 KiB
C
697 lines
21 KiB
C
/* packet-vtp.c
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* Routines for the disassembly of Cisco's VLAN Trunking Protocol
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/expert.h>
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#include <epan/cisco_pid.h>
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/*
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* See
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*
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* http://www.cisco.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080094c52.shtml
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*
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* for some information on VTP.
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*/
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void proto_register_vtp(void);
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void proto_reg_handoff_vtp(void);
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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 = -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 int hf_vtp_pruning_first_vid = -1;
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static int hf_vtp_pruning_last_vid = -1;
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static int hf_vtp_pruning_active_vid = -1;
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static int hf_vtp_vlan_src_route_ring_num = -1;
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static int hf_vtp_vlan_src_route_bridge_num = -1;
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static int hf_vtp_vlan_stp_type = -1;
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static int hf_vtp_vlan_parent_vlan = -1;
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static int hf_vtp_vlan_translationally_bridged_vlans = -1;
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static int hf_vtp_vlan_pruning = -1;
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static int hf_vtp_vlan_bridge_type = -1;
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static int hf_vtp_vlan_max_are_hop_count = -1;
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static int hf_vtp_vlan_max_ste_hop_count = -1;
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static int hf_vtp_vlan_backup_crf_mode = -1;
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static int hf_vtp_vlan_data = -1;
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static int hf_vtp_reserved = -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 gint ett_vtp_pruning = -1;
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static expert_field ei_vtp_vlan_tlvlength_bad = EI_INIT;
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static int
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dissect_vlan_info(tvbuff_t *tvb, packet_info *pinfo, int offset, proto_tree *tree);
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static void
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dissect_vlan_info_tlv(tvbuff_t *tvb, packet_info *pinfo, 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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#define JOIN_MSG 0x04
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static const value_string type_vals[] = {
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{ SUMMARY_ADVERT, "Summary Advertisement" },
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{ SUBSET_ADVERT, "Subset Advertisement" },
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{ ADVERT_REQUEST, "Advertisement Request" },
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{ JOIN_MSG, "Join/Prune Message" },
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{ 0, NULL },
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};
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static void
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set_vtp_info_col(tvbuff_t *tvb, packet_info *pinfo)
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{
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switch (tvb_get_guint8(tvb, 1)) {
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case SUMMARY_ADVERT:
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col_add_fstr(pinfo->cinfo, COL_INFO,
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"Summary Advertisement, Revision: %u", tvb_get_ntohl(tvb, 36));
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if (tvb_get_guint8(tvb, 2) > 0) {
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col_append_fstr(pinfo->cinfo, COL_INFO,
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", Followers: %u", tvb_get_guint8(tvb, 2));
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}
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break;
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case SUBSET_ADVERT:
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col_add_fstr(pinfo->cinfo, COL_INFO,
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"Subset Advertisement, Revision: %u, Seq: %u",
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tvb_get_ntohl(tvb, 36), tvb_get_guint8(tvb, 2));
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break;
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case ADVERT_REQUEST:
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col_set_str(pinfo->cinfo, COL_INFO, "Advertisement Request");
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break;
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case JOIN_MSG:
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col_set_str(pinfo->cinfo, COL_INFO, "Join");
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break;
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default:
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col_set_str(pinfo->cinfo, COL_INFO, "Unrecognized VTP message");
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break;
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}
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}
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static int
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dissect_vtp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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proto_item *ti;
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proto_tree *vtp_tree = NULL, *vtp_pruning_tree = NULL;
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int offset = 0;
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guint8 code;
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guint8 *upd_timestamp;
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int vlan_info_len;
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int pruning_vlan_id;
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int yy, mm, dd, hh, _mm, ss;
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char *display;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "VTP");
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set_vtp_info_col(tvb, pinfo);
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ti = proto_tree_add_item(tree, proto_vtp, tvb, offset, -1, ENC_NA);
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vtp_tree = proto_item_add_subtree(ti, ett_vtp);
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proto_tree_add_item(vtp_tree, hf_vtp_version, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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code = tvb_get_guint8(tvb, offset);
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proto_tree_add_item(vtp_tree, hf_vtp_code, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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switch (code) {
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case SUMMARY_ADVERT:
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proto_tree_add_item(vtp_tree, hf_vtp_followers, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item(vtp_tree, hf_vtp_md_len, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item(vtp_tree, hf_vtp_md, tvb, offset, 32, ENC_ASCII);
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offset += 32;
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proto_tree_add_item(vtp_tree, hf_vtp_conf_rev_num, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(vtp_tree, hf_vtp_upd_id, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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upd_timestamp = display = tvb_get_string_enc(pinfo->pool, tvb, offset, 12, ENC_ASCII);
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if (sscanf(upd_timestamp, "%2d%2d%2d%2d%2d%2d", &yy, &mm, &dd, &hh, &_mm, &ss) == 6) {
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display = wmem_strdup_printf(pinfo->pool, "%02d-%02d-%02d %02d:%02d:%02d",
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yy, mm, dd, hh, _mm, ss);
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}
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proto_tree_add_string_format_value(vtp_tree, hf_vtp_upd_ts, tvb,
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offset, 12, upd_timestamp, "%s", display);
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offset += 12;
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proto_tree_add_item(vtp_tree, hf_vtp_md5_digest, tvb, offset, 16, ENC_NA);
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break;
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case SUBSET_ADVERT:
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proto_tree_add_item(vtp_tree, hf_vtp_seq_num, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item(vtp_tree, hf_vtp_md_len, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item(vtp_tree, hf_vtp_md, tvb, offset, 32, ENC_ASCII);
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offset += 32;
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proto_tree_add_item(vtp_tree, hf_vtp_conf_rev_num, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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while (tvb_reported_length_remaining(tvb, offset) > 0) {
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vlan_info_len =
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dissect_vlan_info(tvb, pinfo, 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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proto_tree_add_item(vtp_tree, hf_vtp_reserved, tvb, offset, 1, ENC_NA);
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offset += 1;
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proto_tree_add_item(vtp_tree, hf_vtp_md_len, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item(vtp_tree, hf_vtp_md, tvb, offset, 32, ENC_ASCII);
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offset += 32;
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proto_tree_add_item(vtp_tree, hf_vtp_start_value, tvb, offset, 2, ENC_BIG_ENDIAN);
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break;
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case JOIN_MSG:
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proto_tree_add_item(vtp_tree, hf_vtp_reserved, tvb, offset, 1, ENC_NA);
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offset += 1;
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proto_tree_add_item(vtp_tree, hf_vtp_md_len, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item(vtp_tree, hf_vtp_md, tvb, offset, 32, ENC_ASCII);
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offset += 32;
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proto_tree_add_item(vtp_tree, hf_vtp_pruning_first_vid, tvb, offset, 2, ENC_BIG_ENDIAN);
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pruning_vlan_id = tvb_get_ntohs(tvb, offset);
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offset += 2;
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proto_tree_add_item(vtp_tree, hf_vtp_pruning_last_vid, tvb, offset,
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2, ENC_BIG_ENDIAN);
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offset += 2;
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vtp_pruning_tree = proto_tree_add_subtree(vtp_tree, tvb, offset, -1,
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ett_vtp_pruning, NULL, "Advertised active (i.e. not pruned) VLANs");
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while (tvb_reported_length_remaining(tvb, offset) > 0) {
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guint8 vlan_usage_bitmap;
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int shift;
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vlan_usage_bitmap = tvb_get_guint8(tvb, offset);
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for (shift = 0; shift < 8; shift++) {
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if (vlan_usage_bitmap & (1<<7)) {
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proto_tree_add_uint(vtp_pruning_tree, hf_vtp_pruning_active_vid,
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tvb, offset, 1, pruning_vlan_id);
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}
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pruning_vlan_id += 1;
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vlan_usage_bitmap <<= 1;
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}
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offset += 1;
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}
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break;
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}
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return tvb_captured_length(tvb);
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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(tvbuff_t *tvb, packet_info *pinfo, 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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guint8 type;
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int length;
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proto_tree *tlv_tree;
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vlan_info_len = tvb_get_guint8(tvb, offset);
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vlan_info_tree = proto_tree_add_subtree(tree, tvb, offset, vlan_info_len,
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ett_vtp_vlan_info, NULL, "VLAN Information");
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vlan_info_left = vlan_info_len;
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proto_tree_add_uint(vlan_info_tree, hf_vtp_vlan_info_len, tvb, offset, 1,
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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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status = tvb_get_guint8(tvb, offset);
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ti = proto_tree_add_uint(vlan_info_tree, hf_vtp_vlan_status, tvb, offset, 1, status);
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if (status & VLAN_SUSPENDED)
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proto_item_append_text(ti, " (VLAN suspended)");
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status_tree = proto_item_add_subtree(ti, ett_vtp_vlan_status);
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proto_tree_add_boolean(status_tree, hf_vtp_vlan_status_vlan_susp, tvb, offset, 1,
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status);
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offset += 1;
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vlan_info_left -= 1;
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proto_tree_add_item(vlan_info_tree, hf_vtp_vlan_type, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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vlan_info_left -= 1;
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vlan_name_len = tvb_get_guint8(tvb, offset);
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proto_tree_add_item(vlan_info_tree, hf_vtp_vlan_name_len, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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vlan_info_left -= 1;
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proto_tree_add_item(vlan_info_tree, hf_vtp_isl_vlan_id, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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vlan_info_left -= 2;
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proto_tree_add_item(vlan_info_tree, hf_vtp_mtu_size, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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vlan_info_left -= 2;
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proto_tree_add_item(vlan_info_tree, hf_vtp_802_10_index, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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vlan_info_left -= 4;
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/* VLAN name length appears to be rounded up to a multiple of 4. */
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vlan_name_len = 4*((vlan_name_len + 3)/4);
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proto_tree_add_item(vlan_info_tree, hf_vtp_vlan_name, tvb, offset, vlan_name_len, ENC_ASCII);
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offset += vlan_name_len;
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vlan_info_left -= vlan_name_len;
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while (vlan_info_left > 0) {
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type = tvb_get_guint8(tvb, offset + 0);
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length = tvb_get_guint8(tvb, offset + 1);
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tlv_tree = proto_tree_add_subtree(vlan_info_tree, tvb, offset,
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2 + length*2, ett_vtp_tlv, &ti,
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val_to_str(type, vlan_tlv_type_vals,
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"Unknown TLV type: 0x%02x"));
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proto_tree_add_item(tlv_tree, hf_vtp_vlan_tlvtype, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tlv_tree, hf_vtp_vlan_tlvlength, tvb, offset+1, 1, ENC_BIG_ENDIAN);
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offset += 2;
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vlan_info_left -= 2;
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if (length > 0) {
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dissect_vlan_info_tlv(tvb, pinfo, offset, length*2, tlv_tree,
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ti, type);
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}
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offset += length*2;
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vlan_info_left -= length*2;
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}
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return vlan_info_len;
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}
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static const value_string stp_type_vals[] = {
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{ 1, "SRT" },
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{ 2, "SRB" },
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{ 3, "Auto" },
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{ 0, NULL },
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};
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static const value_string pruning_vals[] = {
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{ 1, "Enabled" },
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{ 2, "Disabled" },
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{ 0, NULL },
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};
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static const value_string bridge_type_vals[] = {
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{ 1, "SRT" },
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{ 2, "SRB" },
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{ 0, NULL },
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};
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static const value_string backup_crf_mode_vals[] = {
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{ 1, "TrCRF is configured as a backup" },
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{ 2, "TrCRF is not configured as a backup" },
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{ 0, NULL },
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};
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static void
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dissect_vlan_info_tlv(tvbuff_t *tvb, packet_info *pinfo, int offset, int length,
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proto_tree *tree, proto_item *ti, guint8 type)
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{
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switch (type) {
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case SR_RING_NUM:
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if (length == 2) {
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proto_tree_add_item(tree, hf_vtp_vlan_src_route_ring_num, tvb, offset, 2, ENC_BIG_ENDIAN);
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} else {
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expert_add_info_format(pinfo, ti, &ei_vtp_vlan_tlvlength_bad, "Source-Routing Ring Number: Bad length %u", length);
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}
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break;
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case SR_BRIDGE_NUM:
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if (length == 2) {
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proto_tree_add_item(tree, hf_vtp_vlan_src_route_bridge_num, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
} else {
|
|
expert_add_info_format(pinfo, ti, &ei_vtp_vlan_tlvlength_bad, "Source-Routing Bridge Number: Bad length %u", length);
|
|
}
|
|
break;
|
|
|
|
case STP_TYPE:
|
|
if (length == 2) {
|
|
proto_tree_add_item(tree, hf_vtp_vlan_stp_type, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
} else {
|
|
expert_add_info_format(pinfo, ti, &ei_vtp_vlan_tlvlength_bad, "Spanning-Tree Protocol Type: Bad length %u", length);
|
|
}
|
|
break;
|
|
|
|
case PARENT_VLAN:
|
|
if (length == 2) {
|
|
proto_tree_add_item(tree, hf_vtp_vlan_parent_vlan, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
} else {
|
|
expert_add_info_format(pinfo, ti, &ei_vtp_vlan_tlvlength_bad, "Parent VLAN: Bad length %u", length);
|
|
}
|
|
break;
|
|
|
|
case TR_BRIDGED_VLANS:
|
|
if (length == 2) {
|
|
proto_tree_add_item(tree, hf_vtp_vlan_translationally_bridged_vlans, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
} else {
|
|
expert_add_info_format(pinfo, ti, &ei_vtp_vlan_tlvlength_bad, "Translationally Bridged VLANs: Bad length %u", length);
|
|
}
|
|
break;
|
|
|
|
case PRUNING:
|
|
if (length == 2) {
|
|
proto_tree_add_item(tree, hf_vtp_vlan_pruning, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
} else {
|
|
expert_add_info_format(pinfo, ti, &ei_vtp_vlan_tlvlength_bad, "Pruning: Bad length %u", length);
|
|
}
|
|
break;
|
|
|
|
case BRIDGE_TYPE:
|
|
if (length == 2) {
|
|
proto_tree_add_item(tree, hf_vtp_vlan_bridge_type, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
} else {
|
|
expert_add_info_format(pinfo, ti, &ei_vtp_vlan_tlvlength_bad, "Bridge Type: Bad length %u", length);
|
|
}
|
|
break;
|
|
|
|
case MAX_ARE_HOP_CNT:
|
|
if (length == 2) {
|
|
proto_tree_add_item(tree, hf_vtp_vlan_max_are_hop_count, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
} else {
|
|
expert_add_info_format(pinfo, ti, &ei_vtp_vlan_tlvlength_bad, "Max ARE Hop Count: Bad length %u", length);
|
|
}
|
|
break;
|
|
|
|
case MAX_STE_HOP_CNT:
|
|
if (length == 2) {
|
|
proto_tree_add_item(tree, hf_vtp_vlan_max_ste_hop_count, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
} else {
|
|
expert_add_info_format(pinfo, ti, &ei_vtp_vlan_tlvlength_bad, "Max STE Hop Count: Bad length %u", length);
|
|
}
|
|
break;
|
|
|
|
case BACKUP_CRF_MODE:
|
|
if (length == 2) {
|
|
proto_tree_add_item(tree, hf_vtp_vlan_backup_crf_mode, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
} else {
|
|
expert_add_info_format(pinfo, ti, &ei_vtp_vlan_tlvlength_bad, "Backup CRF Mode: Bad length %u", length);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
proto_tree_add_item(tree, hf_vtp_vlan_data, tvb, offset, length, ENC_NA);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
proto_register_vtp(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_vtp_version,
|
|
{ "Version", "vtp.version", FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_code,
|
|
{ "Code", "vtp.code", FT_UINT8, BASE_HEX, VALS(type_vals), 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_followers,
|
|
{ "Followers", "vtp.followers", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Number of following Subset-Advert messages", HFILL }},
|
|
|
|
{ &hf_vtp_md_len,
|
|
{ "Management Domain Length", "vtp.md_len", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Length of management domain string", HFILL }},
|
|
|
|
{ &hf_vtp_md,
|
|
{ "Management Domain", "vtp.md", FT_STRING, BASE_NONE, NULL, 0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_conf_rev_num,
|
|
{ "Configuration Revision Number", "vtp.conf_rev_num", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Revision number of the configuration information", HFILL }},
|
|
|
|
{ &hf_vtp_upd_id,
|
|
{ "Updater Identity", "vtp.upd_id", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
"IP address of the updater", HFILL }},
|
|
|
|
{ &hf_vtp_upd_ts,
|
|
{ "Update Timestamp", "vtp.upd_ts", FT_STRING, BASE_NONE, NULL, 0,
|
|
"Time stamp of the current configuration revision", HFILL }},
|
|
|
|
{ &hf_vtp_md5_digest,
|
|
{ "MD5 Digest", "vtp.md5_digest", FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_seq_num,
|
|
{ "Sequence Number", "vtp.seq_num", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Order of this frame in the sequence of Subset-Advert frames", HFILL }},
|
|
|
|
{ &hf_vtp_start_value,
|
|
{ "Start Value", "vtp.start_value", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
"Virtual LAN ID of first VLAN for which information is requested", HFILL }},
|
|
|
|
{ &hf_vtp_vlan_info_len,
|
|
{ "VLAN Information Length", "vtp.vlan_info.len", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Length of the VLAN information field", HFILL }},
|
|
|
|
{ &hf_vtp_vlan_status,
|
|
{ "Status", "vtp.vlan_info.status", FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_vlan_status_vlan_susp,
|
|
{ "VLAN suspended", "vtp.vlan_info.status.vlan_susp", FT_BOOLEAN, 8, NULL, VLAN_SUSPENDED,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_vlan_type,
|
|
{ "VLAN Type", "vtp.vlan_info.vlan_type", FT_UINT8, BASE_HEX, VALS(vlan_type_vals), 0x0,
|
|
"Type of VLAN", HFILL }},
|
|
|
|
{ &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", HFILL }},
|
|
|
|
{ &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", HFILL }},
|
|
|
|
{ &hf_vtp_mtu_size,
|
|
{ "MTU Size", "vtp.vlan_info.mtu_size", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"MTU for this VLAN", HFILL }},
|
|
|
|
{ &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", HFILL }},
|
|
|
|
{ &hf_vtp_vlan_name,
|
|
{ "VLAN Name", "vtp.vlan_info.vlan_name", FT_STRING, BASE_NONE, NULL, 0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_vlan_tlvtype,
|
|
{ "Type", "vtp.vlan_info.tlv_type", FT_UINT8, BASE_HEX, VALS(vlan_tlv_type_vals), 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_vlan_tlvlength,
|
|
{ "Length", "vtp.vlan_info.tlv_len", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_pruning_first_vid,
|
|
{ "First VLAN ID", "vtp.pruning.first", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"First VLAN ID for which pruning information is present", HFILL }},
|
|
|
|
{ &hf_vtp_pruning_last_vid,
|
|
{ "Last VLAN ID", "vtp.pruning.last", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Last VLAN ID for which pruning information is present", HFILL }},
|
|
|
|
{ &hf_vtp_pruning_active_vid,
|
|
{ "VLAN", "vtp.pruning.active", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Active advertised VLAN ID", HFILL }},
|
|
|
|
{ &hf_vtp_vlan_src_route_ring_num,
|
|
{ "Source-Routing Ring Number", "vtp.vlan_info.src_route_ring_num", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_vlan_src_route_bridge_num,
|
|
{ "Source-Routing Bridge Number", "vtp.vlan_info.src_route_bridge_num", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_vlan_stp_type,
|
|
{ "Spanning-Tree Protocol Type", "vtp.vlan_info.stp_type", FT_UINT16, BASE_HEX, VALS(stp_type_vals), 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_vlan_parent_vlan,
|
|
{ "Parent VLAN", "vtp.vlan_info.parent_vlan", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_vlan_translationally_bridged_vlans,
|
|
{ "Translationally Bridged VLANs", "vtp.vlan_info.translationally_bridged_vlans", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_vlan_pruning,
|
|
{ "Pruning", "vtp.vlan_info.pruning", FT_UINT16, BASE_HEX, VALS(pruning_vals), 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_vlan_bridge_type,
|
|
{ "Bridge Type", "vtp.vlan_info.bridge_type", FT_UINT16, BASE_HEX, VALS(bridge_type_vals), 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_vlan_max_are_hop_count,
|
|
{ "Max ARE Hop Count", "vtp.vlan_info.max_are_hop_count", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_vlan_max_ste_hop_count,
|
|
{ "Max STE Hop Count", "vtp.vlan_info.max_ste_hop_count", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_vlan_backup_crf_mode,
|
|
{ "Backup CRF Mode", "vtp.vlan_info.backup_crf_mode", FT_UINT16, BASE_HEX, VALS(backup_crf_mode_vals), 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_vlan_data,
|
|
{ "Data", "vtp.vlan_info.data", FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_vtp_reserved,
|
|
{ "Reserved", "vtp.reserved", FT_BYTES, BASE_NONE, NULL, 0,
|
|
NULL, HFILL }},
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_vtp,
|
|
&ett_vtp_vlan_info,
|
|
&ett_vtp_vlan_status,
|
|
&ett_vtp_tlv,
|
|
&ett_vtp_pruning,
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_vtp_vlan_tlvlength_bad, { "vtp.vlan_info.tlv_len.bad", PI_PROTOCOL, PI_WARN, "Bad length for TLV length", EXPFILL }},
|
|
};
|
|
|
|
expert_module_t* expert_vtp;
|
|
|
|
proto_vtp = proto_register_protocol("VLAN Trunking Protocol", "VTP", "vtp");
|
|
proto_register_field_array(proto_vtp, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
expert_vtp = expert_register_protocol(proto_vtp);
|
|
expert_register_field_array(expert_vtp, ei, array_length(ei));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_vtp(void)
|
|
{
|
|
dissector_handle_t vtp_handle;
|
|
|
|
vtp_handle = create_dissector_handle(dissect_vtp, proto_vtp);
|
|
dissector_add_uint("llc.cisco_pid", CISCO_PID_VTP, vtp_handle);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|