From: Scott Morris (smorris@ipexpert.com)
Date: Sun Sep 09 2007 - 18:11:52 ART
Its not that there's a dependency but rather the router tries to be
nice to and picks a valid and presumably unique 32-bit number to use.
We are just TOO used to the magic! ;)
Sent from my iPhone
On Sep 9, 2007, at 4:35 PM, Bruce Porcelli <bruce.porcelli@yahoo.com>
wrote:
> okay .. question on that.
>
> if ipv6 is independent of ipv4, especially from a protocol
> perspective, then what / why is there a dependency with ipv4 router-
> id in ipv6 protocols..
>
> hope that question makes sense.
>
> Thanks
>
> Scott Morris <smorris@ipexpert.com> wrote:
> While it should be obvious that you need to have an interface up and
> going
> to run BGP anyway... But more importantly, in case you're a nuveau
> adopter
> of IPv6, you need to have either an IPv4 interface up and running or
> manually specify a router id. Routing protocols right now are using
> 32-bit
> router-id values which correspond nicely to IPv4, but not to IPv6!
>
> So do "show ip interface brief" and see what's up and running.
>
> HTH,
>
>
> Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713,
> JNCIE
> #153, CISSP, et al.
> CCSI/JNCI-M/JNCI-J
> VP - Technical Training - IPexpert, Inc.
> IPexpert Sr. Technical Instructor
>
> A Cisco Learning Partner - We Accept Learning Credits!
>
> smorris@ipexpert.com
>
> Telephone: +1.810.326.1444
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>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of Hash
> Aminu
> Sent: Sunday, September 09, 2007 1:13 PM
> To: Cisco certification
> Subject: BGP Router-id
>
> GS,
>
> I cannot think of a logical reason for the error below, never
> encountered
> it before and bgp running fine without hardcoding a router-id, now its
> asking for it.
> Any ideas?
>
> TIA
>
> Hash
> R5#sh ip bgp summ
> R5#sh ip bgp summary
> % BGP cannot run because the router-id is not configured
>
> R5#
> *Mar 1 01:34:37.295: %BGP-4-NORTRID: BGP could not pick a router-id.
> Please
> configure manually.
> R5#
>
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