[OpenSIPS-Users] Dispatcher Module Question

[Helmut Kuper]

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Hello,


I'm loocking for a HA solution for 2 node opensips proxy setup. I found
opensips' dispatcher module, but I'm not sure if it is able to handle
serverral pairs of SIP-proxies e.g. 1 Dispatcher pair in front of n
sip-proxy pairs (where n > 1).

I think it can, but I would like to get an ok from you :)


Further, if it can do the job, I expect a problem with firwall in front
of the Dispatcher Pair in case of no recordroute in the Dispatcher as
follows

A SIP-Request comes in through FW to Dispatcher (Dispatcher is the
SIP-Proxy from UserAgent's point of view). Dispatcher routes it to
SIP-Proxy-Node0. SIP-Proxy-Node0 sends replies back to UserAgent passes
by the Dispatcher (because of no recordroute).
So from FW's point of view an IP-packet was sent to destination address
A (here Dispatcher), but IP-Address B (here SIP-Proxy-Node0) sends an
answere.

Do I understand the dispatcher functionality right? Has anyone a similar
setup and some experiences with it in terms of whether it is knocking
out firewalls or not? Or do I have to enable recordroute in Dispatcher?

For UserAgents view I think they prefer to communicate with only one
IP-Address (due to security reasons) instead of communicating with a
growing number of different SIP-Proxy-Nodes resp. IP-Networks.

regards
Helmut
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