The MPLS-OPS Archive

[Guy Davies <Guy.Davies@telindus.co.uk>]

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Yes.  This is certainly possible using JUNOS (from 5.3 I think).  It
is known in JUNOSspeak as translational cross connect (tcc).  I'm not
sure about other vendors.  You can currently interoperate any
combination of ATM (P2P), FR (P2P), PPP and Cisco-HDLC.  There is a
downside to this functionality.  You can only carry IP traffic over
such a VPN.

Regards,

Guy

> -----Original Message-----
> From: alok [mailto:alok.dube@apara.com]
> Sent: Tuesday, September 10, 2002 1:53 PM
> To: mpls-ops@mplsrc.com
> Subject: [MPLS-OPS]: Re: L2VPN
> 
> 
> ...i ran this query sometime back...
> 
> has anyone seen an implementation where the 2 remote ends are 
> of different
> types..? like ATM on one end and FR on the other?
> 
> ----- Original Message -----
> From: alok <alok.dube@apara.com>
> To: <mpls-ops@mplsrc.com>
> Sent: Thursday, September 05, 2002 9:58 PM
> Subject: Re: L2VPN
> 
> 
> ...as an extension, why shud the encap even be the same at all?
> i cud have FR on one end and ATM on the other...?
> 
> am i misinterpreting the draft ?
> 
> -rgds
> Alok
> ----- Original Message -----
> From: alok <alok.dube@apara.com>
> To: <mpls-ops@mplsrc.com>
> Sent: Thursday, September 05, 2002 9:53 PM
> Subject: L2VPN
> 
> 
> Hi All,
> 
> was just reading
> http://www.ietf.org/internet-drafts/draft-kompella-ppvpn-l2vpn-02.tx
> t  
> 
> does any one have any idea why the fr encap etc should be a 
> cross connect?
> 
> why cant we simply let DLCIs change across locations...
> 
> what i mean is this:
> 
> Site -A connects to PE via some FR provider to go to Site B.. 
> who comes into
> my MPLS network.....
> 
> he gives site A a DLCI to connect him from A to B.
> 
> now the FR provider on the other end of the MPLS VPN cant use 
> the same DLCI
> number....( he has used it etc)
> 
> why cant i associate this with another DLCI and send it across....
> 
> essentially if the CE-id is the distinguisher... why can i 
> simply "simulate"
> a huge FR network??? rather than a huge FR switch?
> 
> its upto me how to associate the CE-id with the DLCI..... but why
> not support "encap-fr" instead of "encap-fr-ccc"?
> 
> same for ATM...
> 
> any ideas?
> 
> -rgds
> Alok
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
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