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Re: [v6ops] BGP Identifier

Sander Steffann <sander@steffann.nl> Sat, 15 February 2014 11:15 UTC

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From: Sander Steffann <sander@steffann.nl>
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Date: Sat, 15 Feb 2014 12:15:20 +0100
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To: Shane Amante <shane@castlepoint.net>
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Subject: Re: [v6ops] BGP Identifier
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Op 15 feb. 2014, om 04:58 heeft Shane Amante <shane@castlepoint.net> het volgende geschreven:
> I would take exception to a ROUTER_ID being just a 32-bit integer.  Specifically, when a ROUTER_ID is an IP address that allows an operator to quickly perform diagnosis & troubleshooting using ping/traceroute/etc. to identify the availability and location within the topology of the router purporting to have said ROUTER_ID.

If you try to ping a router-id then all bets are off. I have seen too many cases with misconfigured router-ids to attach any value (except the numerical one) to them. I also never try to ping OSPF area numbers ;)

> The other question I would raise is, in a far-off future, if we ever manage to get networks converted away from dual-stack and back to a single AFI -- namely, IPv6 -- if ROUTER_ID's are only 32-bits and you lose those capabilities mentioned above ... would you care?

Not at all. And it I wanted to link IPv6 loopback addresses and router-ids I probably would choose a router-id (say aaa.bbb.ccc.ddd) and then use either 2001:db8::aaa.bbb.ccc.ddd/128 or 2001:db8::aaa:bbb:ccc:ddd/128 as loopback address.

Cheers,
Sander

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