[85051] in North American Network Operators' Group
Re: [eng/rtg] changing loopbacks
daemon@ATHENA.MIT.EDU (Austin)
Fri Sep 30 19:54:42 2005
Date: Fri, 30 Sep 2005 19:55:06 -0400
From: Austin <amckinle@andrew.cmu.edu>
To: nanog@nanog.org
Errors-To: owner-nanog@merit.edu
It's worth noting that C's don't need actual IP address space assigned to
the router-id for OSPF. It's just an arbitrary value; it's probably better
karma to set it to whatever you want (maybe something that doesn't look
like an IP address).
RFC 2328:
Router ID
A 32-bit number assigned to each router running the OSPF
protocol. This number uniquely identifies the router within
an Autonomous System.
CCO:
<http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_command_reference_chapter09186a008010a39c.html#wp1049279>
Usage Guidelines
You can configure an arbitrary value in the IP address format for each
router. However, each router ID must be unique.
If this command is used on an OSPF router process which is already active
(has neighbors), the new router-ID is used at the next reload or at a
manual OSPF process restart. To manually restart the OSPF process, use the
clear ip ospf command.
