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Paedrig_69869's avatar
Paedrig_69869
Icon for Nimbostratus rankNimbostratus
Sep 21, 2016

OSPF redistribute kernel uses 127.1.1.1 forward address

Hi All, We are trying to advertise a virtual address into OSPF using the following imish config router ospf 24 auto-cost reference-bandwidth 40000 bfd all-interfaces redistribute kernel metri...
application delivery
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Fred_Wittenberg's avatar
Fred_Wittenberg
Historic F5 Account

Just out of curiosity have you tried apply a route-map to filter outbound advertisements so that only the intended self/floating IP's are advertised? Not sure where the 127 address is coming from without seeing your entire config but this would be a quick way to prevent it from being advertised.

 

Paedrig_69869's avatar
Paedrig_69869
Icon for Nimbostratus rankNimbostratus
Oct 04, 2016

Thanks Fred, some testing has indicated that redistributing kernel routes with a route map that sets the next hop IP does change the behavior of the forward address.

 

I would imagine that using this in conjunction with a prefix list would allow only the desired addresses to be advertised though we haven't tested to this extent yet.

 

If there are specific things about our config that you think would be worth verifying please let me know and I'll see if I can post them.