ripd, multicast and route to 224.0.0.0/4
From: Eugene Grosbein (eugen_at_kuzbass.ru)
Date: 04/29/04
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Date: Thu, 29 Apr 2004 20:50:16 +0800 To: net@freebsd.org
Hi!
Who is guilty: ripd or FreeBSD kernel? Or I am?
My router has default route via its em4 interface (and there is eBGP session)
and has to announce default route using RIPv2 to the network reachable
through em3.
So T configure ripd:
router rip
version 2
network em3
! Just to be sure: em3 is configured as 172.20.2.75/24
network 172.20.2.0/24
default-information originate
redistribute kernel
redistribute static
redistribute connected
!
It seems that ripd (I tried zebra and quagga from fresh ports) will
send its multicast announces using the interface that a route to
224.0.0.0/4 points to. So, ripd sends its RIPv2 multicast packets
to my uplink network via em3 if the router does not have a specific
route to 224.0.0.0/4 pointing to em3. Why? And what should I do
if I will need to send RIPv2 to em0, em1, em2 and em3?
Eugene Grosbein
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