[c-nsp] question about BFD

[Bruce Pinsky]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Srividya Rao wrote:
> Hey all,
> 
>  
> 
> I have a few questions regarding BFD on Cisco:
> 
>  
> 
> -          Does BFD notify its clients (registered protocols like
> OSPF/ISIS) when a link comes up? If it does, what value does that hold
> in the protocol's context? Every protocol has its own hello mechanism
> wherein it not only recognizes its neighbors, but also exchanges some
> protocol-specific information. Hence, does BFD's notification add any
> value?
> 
> -          Is it possible to promise a turnover time of 50ms (or say
> even 100ms) for links on VLANs? This is because, in the case of VLANs,
> BFD will have to depend on ARP to resolve the neighbors IP address and
> hence BFD's timing is dependent on ARP's timing.
> 
> -          Similar to the above question, how does Cisco implement BFD
> for ISIS? For an ISIS neighbor, ARP need not be necessarily resolved.
> So, does BFD request ARP to resolve the neighbor's IP?
> 
>  
> 

Pretty specific implementation questions....are you trying to insure
compatibility with Cisco as you are developing Force 10's capability?

- --
=========
bep

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.0 (MingW32)

iD8DBQFDvF+ME1XcgMgrtyYRAoZJAKDdORlWBgBUPpDyntVlN35LMRqXKwCfepYo
EXCHysnDl88gdug62SrTgLg=
=kyPh
-----END PGP SIGNATURE-----