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Cell Relay Retreat>MPLS WG Archive>month:2001-Oct> msg00398



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Questions on unnumbered links

  • From: "Naidu, Venkata" <Venkata.Naidu@Marconi.com>
  • Date: Thu, 25 Oct 2001 18:23:18 -0400
  • Cc: "'Eric Gray'" <eric.gray@sandburst.com>, mpls@UU.NET

Naiming:

-> 	The ping to the unnumbered interface, the draft is talking about
-> network operation issues. It's very common for NOC engineers to ping
-> remote router's interface IP addresses to determine if a 
-> link is up or
-> down, while ping to a router's loopback cannot determine a specific
-> link status; a traceroute does not show which link it 
-> traverses through
-> if a unnumbered address is used; you can't put link's name 
-> in DNS record
-> if its unnumbered; if you have parallel links between two routers, if
-> one link is not being used, a good troubleshooting way will 
-> be to ping
-> the other side interface IP address of this link(this assumes showing
-> both sides line status up but it just does not work somehow); when a
-> snmp trap comes into operation center, wouldn't it be nice to see
-> "oc12-link2-core2-ny-dc.xyz.net just down" instead of
-> "core2-ny.xyz.net link 238 just down"? All being said above, 
-> unnumbered
-> interface is VERY useful.

  I agree...

--Venkata Naidu