Please, see in line.
----- Original Message ----
From: Attila Takacs <Attila.Takacs@ericsson.com>
To: Igor Bryskin <firstname.lastname@example.org>; Don Fedyk <email@example.com>; firstname.lastname@example.org; email@example.com; firstname.lastname@example.org
Sent: Thursday, April 10, 2008 2:54:21 AM
Subject: RE: Continued Poll for Adoption of Ethernet I-Ds
how the separation of VLAN ID space would help in this case? If PBB packets
are leaked into PBB-TE they will be immediately dropped because there will be
no PBB-TE connections configured for such packets. If PBB-TE packets are
leaked into PBB, than, since, PBB knows nothing about PBB-TE anyway the
packets will be flooded across the PBB domain.
leaking from PBB to PBB-TE does not necessarily means immediate discarding of
PBB frames. Due to the VLAN separation between PBB and PBB-TE, there is no
clear layering here. Hence leaking can essentially mean that the VID of a
bridged (PBB) frame is changed to a VID used for explicitly
routed connections (PBB-TE). This does not necessarily means that the frame
will be dropped. It is a valid assumption that the MAC address of the PBB frame
is configured in the PBB-TE region as well and as such leakig PBB traffic will
be forwarded as if it would belong to an explicitly routed connection.
IB>> In order for a packet, leaking from PBB to PBB_TE not be dropped, it is necessary for the triplet from PBB MAC header (SA-DA-VID) to match one of configured on the node PBB-TE connections. Even if one assumes that this is possible, it is highly unlikely to be the case on the next along the connection PBB-TE node. Hence the packet will be dropped either immediately or on the next PBB-TE node.
that what I just wrote is true regardless whether PBB-TE uses specially
allocated ranges of VLANIDs or all VLANIDs. Hence there is no architectural
need for the VLANID space separation.
I think this is
not necessary true, if one allocates the whole VLAN space to PBB-TE then there
will be no bridged traffic in the network. As a consequence no leaking and no
other cross effects is to be expected.