Re: Multiple OSPF processes having same router-id ?

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 Tue Feb 17 2015 - 22:18:28 ART