[c-nsp] End-to-end up/down awareness for EoMPLS on VLAN

[David Freedman]

Well, there is the "ethernet oam remote-failure" command, but appears 
only to be supported on :

3750ME:

http://www.cisco.com/en/US/products/hw/switches/ps5532/products_configuration_guide_chapter09186a0080773002.html

76xx SIP/SPA modules:

http://www.cisco.com/en/US/products/hw/routers/ps368/module_installation_and_configuration_guides_chapter09186a0080523f4a.html

I'm sure there are more , not sure if this will work for subinterfaces 
though.

BFD produces changes in a supported BFD routing protocol (such as OSPF), 
I've asked before about some kind of "native" BFD which can inform a 
tracker (such as BFD for static routing) but have had no responses on this.

SAA from CE->CE across the path would probably be the best bet IMHO.

Dave.


Paul van der Zel wrote:
> I'm looking for the most effective way to obtain awareness of the  
> existence or failure of EoMPLS xconnect's across an MPLS cloud being  
> provided to an edge IP layer via VLAN sun-interfaces. Platforms are  
> 7206, GSR and 6509 Sup7203bxl. Routing is mix of OSPF, BGP and  
> static. I know there is a mechanism on GSR IOS that can put Ethernet  
> into up/down state if associated xconnect is down, but this does not  
> extend to VLAN sub-interfaces.
> 
> Are there any oam-style facilities available for this? would BFD work  
> or using saa to track ip hop and withdraw route be the best approach?
> 
> Thanks!
> --
> 
> Paul van der Zel
> Internet Solutions, South Africa
> Tel: +27 (11) 575-0818
> 
> 
> 
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