[Sip-implementors] SCTP Multihoming Always sending primary interface ip

[VARUN BHATIA]

Hi,

We have developed multihomed application now while testing my setup is:

Eth4 as primary interface connected back to back to another machine.
Eth5 as secondary interface connected back to back to another machine.

I make my porimary interface down now when the INIT is been sent it reaches
to peer machine seems using secondary interface but the source ip address
kept is of primary interface only due to which when peer machine tries to
respond INIT_ACK it tries to send on primary interface ip which is down and
due to ICMP it drops the packet.

I am not too good in Routing but it seems that some routing has not been
configuered properly, why is it always using primary ip ?

I have tested the same part when I have connected my primary & secondary
interface through router but facrd the same issue.

Any inputs are appreciated as I am stuck in it since last 2 days.

[Dale R. Worley]

From: VARUN BHATIA <varuninbharti at gmail.com>
I make my porimary interface down now when the INIT is been sent it reaches
to peer machine seems using secondary interface but the source ip address
kept is of primary interface only due to which when peer machine tries to
respond INIT_ACK it tries to send on primary interface ip which is down and
due to ICMP it drops the packet.

I think you would get better advice on an SCTP implementor's mailing
list. There doesn't seem to be anything about your problem that is
specific SIP.

Dale