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gtphub: enhance gtphub-example.txt

This commit is contained in:
Neels Hofmeyr 2015-12-07 11:07:22 +01:00
parent 5c7dcf9665
commit 5d5c31a367
1 changed files with 14 additions and 2 deletions
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16
openbsc/doc/examples/osmo-gtphub/gtphub-example.txt
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@ -61,16 +61,28 @@ The LD_LIBRARY_PATH below may be needed if OpenGGSN installed to /usr/local.
cd <your-test-dir>
path/to/openbsc/openbsc/src/gprs/osmo-gtphub -c gtphub.conf #-e 1 #for DEBUG level
3. SGSN test:
3. SGSN tests:
sudo -s
cd <your-test-dir>
/usr/local/bin/sgsnemu --createif -l 127.0.0.1 -r 127.0.0.3 --contexts=3
/usr/local/bin/sgsnemu --createif -l 127.0.0.1 -r 127.0.0.3 --imsi 420001214365100 --contexts=3
Add more SGSNs using different IMSIs and local ports (if the same IMSI is used,
the GGSN will reuse TEIs and tunnels will be discarded automatically):
/usr/local/bin/sgsnemu --createif -l 127.0.0.11 -r 127.0.0.3 --imsi 420001214365300 --contexts=3
This shows the basic setup of GTPHub. Testing internet traffic via sgsnemu
still needs some effort to announce a mobile subscriber or the like (I have
used a real BTS, osmo-sgsn and a testing SIM in a web phone, instead).
The core capability of GTPHub is to manage more than two GSNs, e.g. an SGSN
contacting various GGSNs over the single GTPHub link. You would configure the
SGSN to use one fixed GGSN (sending to gtphub) and gtphub will resolve the
GGSNs once it has received the messages. So the SGSN may be behind NAT (add
"sgsn-use-sender" to gtphub.conf) and communicate to various GGSNs over a
single link to gtphub.
I hope this helps to get you going.
Any suggestions/patches are welcome!