RE: Martini Ethernet mode

[Shahram Davari <[e-mail]>]

Thanks Eric,

Actually based on this I wanted to find out what kind of lookup should be done
at the egress point of the PW:

1) If VLAN tag was used to select the PW at the ingress, then it doesn't make
sense to do any VLAN (or MAC) lookup at the egress, since the VC label represents the VLAN information.

2) If the port# has been used to select the PW at the ingress, also there is no
point in looking up the VLAN (or MAC) at the egress, since this is supposed to be
a transparent mode.

3) If the MAC or MAC+VLAN is used to select the PW at the ingress, then you
need to do VLAN and/or MAC lookup at the egress.

Is my understanding correct?

-Shahram

> -----Original Message-----
> From: Eric Rosen [mailto:[e-mail]]
> Sent: Wednesday, July 31, 2002 10:59 AM
> To: Shahram Davari
> Cc: '[e-mail]'
> Subject: Re: [PWE3] Martini Ethernet mode 
> 
> 
> 
> Shahram> What  is  the PW  selection  criteria  in  case of  
> Martini  native
> Shahram> Ethernet mode? 
> 
> This is a  bit like asking what the "TCP  connection 
> selection criteria" are
> when you have packets to send.  It's  up to the users of the 
> TCP connections
> to know which ones to use when.
> 
> It  is the  "forwarders" (see  
> draft-ietf-pwe3-protocol-layer-00  and draft-
> andersson-ppvpn-l2-framework-01) that  decide which  frames 
> to put  on which
> pseudowires.   Different  forwarders may  use  different  
> criteria. This  is
> discussed in the PPVPN L2VPN framework. 
> 
> 
> 
>