Re: Multiple OSPF processes having same router-id ?

Guys I think u will find the process ids are used the build and maintain the individual OSPF databases and RIBs.

Chris

> On 19 Feb 2015, at 8:41 pm, Aaron <aaron1_at_gvtc.com> wrote:
>
> While we are on that subject, in case you were wondering, you can't
> duplicate the ospf process ID either, even if it's in a vrf context...
>
> R3(config)#router ospf 1 vrf test
> OSPF process 1 already exists and is attached to Default-IP-Routing-Table
>
>
> Aaron
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Billy Singh
> Sent: Tuesday, February 17, 2015 6:18 AM
> To: ccielab_at_groupstudy.com
> Subject: 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 Thu Feb 19 2015 - 21:00:50 ART