[nsp] Transport E1/T1 signal transparently over IP

[Ezequiel Carson]

one question,

who is gonna guarantee clock recovery for the CBR network, queueing on
interface would generate jitter and those will generate SLIPs on the
E1/T1 signals. it only work if you have SPQ on your own interfaces. 


ezeq.




On Thu, 2003-10-30 at 15:40, Temkin, David wrote:
> I wouldn't see why not.  We're currently doing AToM ATM VP Trunking of
> multiple DS-3's over MPLS (it's set up like this) between IGX switches,
> which are very delay/jitter sensitive (Virtual trunking is not native to
> them, it was a feature that was added later)
> 
> DS-3 from
> IGX----|7500|---ethernet---|7200|---MPLS-----|7200|---|7500|---DS-3 to IGX
> 
> Provided the MPLS in the middle is stable, I wouldn't see why it would be a
> problem.
> 
> -----Original Message-----
> From: Alex Rubenstein [mailto:alex at nac.net] 
> Sent: Thursday, October 30, 2003 1:38 P
> To: Ezequiel Carson
> Cc: Temkin, David; cisco-nsp at puck.nether.net
> Subject: RE: [nsp] Transport E1/T1 signal transparently over IP
> 
> 
> 
> 
> On Thu, 30 Oct 2003, Ezequiel Carson wrote:
> 
> > is it possible? afaik there is only support for AAL5
> 
> Perhaps I should clarify. Suppose:
> 
> 
> E1---|8510|-atm-|7200|-----MPLS-----|7200|-atm-|8510|---E1
> 
> The 8510 to 7200 is an ATM link, ie, DS3.
> 
> There is an LSP between the 8510's via the 7200's, that allow the 8510's to
> gain a PNNI adjacency.
> 
> The 8510's, using E1-CES cards, would put a CBR PVC over the MPLS provided
> ATM link.
> 
> The root question is, is the MPLS network stable enough, jitter wise, to
> provide a CBR CES E1?
> 
> 
> 
> 
> -- Alex Rubenstein, AR97, K2AHR, alex at nac.net, latency, Al Reuben --
> --    Net Access Corporation, 800-NET-ME-36, http://www.nac.net   --
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