Re: [FW1] Nokia Routing guru question ????

["John Gesualdi" <jgesuald@FW1-NOSPAMprojo.com>]

I wish it were that simple,  I did some testing and noticed  the external cisco had
routes from my internal network ( subnets)  via two paths ( the Nokias ), this is
during normal vrrp operation. I guess this makes sense becuase they are equal cost
routes. I figured I could tweak this by setting the path cost higher on the backup
Nokia.  This worked now I only see the internal subnets on the external router via
the primary nokia. The external traffic comming back  into my network  needs to only
come in on the primary Nokia and having two equal cost routes will cause the Ciscc
to load balance, this won't work so I set the path cost on the 2nd Nokia higher.

I also saw during  failover that the internal subnets on the external cisco routing
table  still pointed to the primary Nokia even though I failed over to the backup
Nokia. I guess this also makes sense because I still have the OSPF adjacency
established with the external router and the Nokia. This is why I  wanted to kill
the routing daemon on the Primary Nokia during failover, killing routing on the
Primary Nokia makes the higher cost backup path show up in the external Cisco.

Someone mentioned that VRRP should take care of all of this automatically, Is this
true?




James_E_Clukey@rush.edu wrote:

> John:
>
>      If you say that you are using VRRP monitored circuits on both Nokia's then
> that means that all interfaces on the primary Nokia fail over to the secondary.
>
>      Your Cisco's on both sides should be pointing to the "Virtual IP" for the
> interface in question. (i.e. for the external Cisco the route should be pointing
> to the Virtual IP of the external interface on the Nokia, and for the internal
> Cisco it should be pointing to the Virtual IP of the internal interface). You do
> not want to be pointing any of your Cisco's to any of the physical IP's on the
> Nokia's.
>
>      In the case of a failover then the secondary will be "routing" for this
> virtual IP and not the primary.
>
>      I hope that I have cleared things up a little, if not....you can either
> send me an email directly or just post another reply to the listserver.
>
> "John Gesualdi" <jgesuald@projo.com> on 09/07/2000 01:02:37 PM
>
>
>
>   To:          fw <fw-1-mailinglist@lists.us.checkpoint.com>
>
>   cc:          (bcc: James E Clukey/Rush/RSH)
>
>
>
>   Subject      [FW1] Nokia Routing guru question ????
>   :
>
>
>     Hi,
>
>     I have two Nokia's running VRRP monitored circuits. The Nokia's are running
> OSPF with a Cisco on the external network side and also run OSPF with 2 cisco's
> on the internal network side. During an VRRP switch over to the BACKUP  machine
> I need to automatically shut down routing on the MASTER  Nokia.  How can I do
> this?  Please help, thanks.
>
> --
> John Gesualdi
> The Providence Journal Company
> Phone> Pager> CCDP,CCNP
>
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--
John Gesualdi
The Providence Journal Company
PhonePagerCCDP,CCNP




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