Talk:Link-state advertisement

Link ID seems to be partially incorrect
The Link ID could be an interface address of a DR, an IP address or a router ID (usually of a neighbor router) depending on which LSA Type it is used in.

It's currently listed as:

LS Type: 1 Description: point-to-point connection to another router Link ID: neighboring router ID

LS Type 1: The originating router's "router ID" (RID). LS Type 2: The IP interface address of the network's DR. LS Type 3: The destination network number. LS Type 4: The router ID of the ASBR. LS Type 5: The external ID Number.

Note: Type 5 is missing from the original list!

Other explanations I've found on the internet mention the following as well:

For router links, the link ID is always the router's own router ID (RID). For summary links, the link ID is the summary network number. For stub links, the link ID is the network/subnet number for that stub. For P2P links, the link ID is the neighboring router ID. The above line sounds like the mistaken Type 1 mentioned above For NSSA links, a link ID of 0.0.0.0 refers to an 'external network number'. (i.e. forward to the default route.) — Preceding unsigned comment added by Wbenton (talk • contribs) 05:41, 24 March 2010

LSA Function Code
A recent edit changed the LS Type for AS-External-LSA from 0x2005 to 0x4005. I checked RFC 5340 (and its errata) and the edit is correct (thanks!). However, I then checked the others. They are all correct according to the RFC except for Link-LSA which the article says is 0x2008 but the RFC says is 0x0008. Does anyone know what's going on with the strange out-of-sequence values? What is correct? Johnuniq (talk) 08:54, 29 May 2012 (UTC)