Merit Network
Can't find what you're looking for? Search the Mail Archives.
  About Merit   Services   Network   Resources & Support   Network Research   News   Events   Home

Discussion Communities: Merit Network Email List Archives

North American Network Operators Group

Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: endpoint liveness (RE: Do ATM-based Exchange Points make sensean ymore?)

  • From: Petri Helenius
  • Date: Sat Aug 10 11:07:01 2002

Mike Hughes wrote:

> But, how does that work when you may be delivering multiple q-tags on a
> single GigE port (for example)? If only one tag is affected, you don't
> want to drop link, right?
> 
> So, we're back to detection at layer 3, can I ping it, do I have
> adjacency, etc.
> 
> Some sort of lower-level heartbeat (maybe like OAM), not dependent on IP
> reachability, would be a bonus - and it's probably low in the tax stakes,
> if it can be made simple enough.
> 
I think pseudowire liveness (in case of ethernet pseudowires which are 
by nature multipoint and multi-vlan) does not really make sense but as you
conclude L3 liveness does. Obviously one can repeat the exercise for everything
that needs liveness but it would make more sense to have a generic way to 
determine L3 reachability in a robust manner.

Pete




Discussion Communities


About Merit | Services | Network | Resources & Support | Network Research
News | Events | Contact | Site Map | Merit Network Home


Merit Network, Inc.