Re: Multiple OSPF processes having same router-id ?

Yes Billy,

I am not sure how i tested before but i can see the parser is throwing an
error about usage of same router-id on Multiple processes.

R5(config)#router ospf 20
R5(config-router)#router-id 20.20.20.20
R5(config-router)#exit
R5(config)#
R5(config)#router ospf 21 vrf ABC
R5(config-router)#router-id 20.20.20.20
% OSPF: router-id 20.20.20.20 in use by ospf process 20

Thanks

Thanks
Rakesh Madupu
JNCIE-SP #02079

On Tue, Feb 17, 2015 at 5:48 PM, Billy Singh <billysingh_at_ipanyany.com>
wrote:

> Not sure about "real-world" applications but I just knocked a quick
> config up in a lab environment and was unable to manually configure the
> same OSPF router-id across multiple OSPF processes (Global and VRF); the
> IOS parser did prevent me from doing so:
>
> R10(config-if)#router ospf 1 vrf CUST1
> R10(config-router)#router-id 1.1.1.1
> % OSPF: router-id 1.1.1.1 in use by ospf process 100
> ...
> *Feb 17 11:59:37.282: %OSPF-4-NORTRID: OSPF process 1 failed to allocate
> unique router-id and cannot start
> ...
> R10(config-router)#do sh ip os | i [Pp]rocess
> Routing Process "ospf 100" with ID 1.1.1.1
> %OSPF: Router process 5 is not running, please configure a router-id
> %OSPF: Router process 4 is not running, please configure a router-id
> %OSPF: Router process 3 is not running, please configure a router-id
> %OSPF: Router process 2 is not running, please configure a router-id
> %OSPF: Router process 1 is not running, please configure a router-id
>
> R10(config-router)#do sh ver | i IOS
> Cisco IOS Software, Linux Software (I86BI_LINUX-ADVENTERPRISEK9-M),
> Version 15.4(2)T, DEVELOPMENT TEST SOFTWARE
>
> What is your hardware platform and IOS version?
>
> Billy
>
> On 02/17/15 21:45, Rakesh M wrote:
> > Hi,
> >
> > Within Cisco Routers, if we have multiple OSPF processes (running in
> global
> > and as well at VRF level) , can we define same router-id for all these
> OSPF
> > processes ?
> >
> > I tried assigning and i have not got any parser errors from the device
> nor
> > there was an impact on Neighbor formation process ?
> >
> > Would there be any design Reason for this choice or for not to opt for
> this
> > choice ?
> >
> > Thanks
> > Rakesh Madupu
> > JNCIE-SP #02079
> >
> >
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Received on Wed Feb 18 2015 - 07:05:42 ART