RE: Question on RSTP/MSTP between CE and PE
"Ali Sajassi \(sajassi\)" <sajassi@cisco.com> Fri, 13 January 2006 06:19 UTC
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Date: Thu, 12 Jan 2006 22:19:32 -0800
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Thread-Topic: Question on RSTP/MSTP between CE and PE
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From: "Ali Sajassi (sajassi)" <sajassi@cisco.com>
To: Ravindra Rathi <rrathi@greenfieldnetworks.com>, l2vpn@ietf.org
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Subject: RE: Question on RSTP/MSTP between CE and PE
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The short answer is to take a look at clauses 15 and 13 of 802.1ad (rev.D6). -Ali > -----Original Message----- > From: l2vpn-bounces@ietf.org [mailto:l2vpn-bounces@ietf.org] > On Behalf Of Ravindra Rathi > Sent: Wednesday, January 11, 2006 3:28 AM > To: l2vpn@ietf.org > Subject: Question on RSTP/MSTP between CE and PE > > This is regarding following text in > draft-sajassi-l2vpn-vpls-bridge-interop-01.txt. > > <snip> > For example, when an Attachment Circuit is port-based, then > the bridge module of the PE can operate transparently with > respect to the CEs RSTP/MSTP protocols (and thus no C-VLAN > component is required for that customer UNI). However, when > an Attachment Circuit is VLAN-based (either VLAN mapping or > VLAN bundling), then the bridge module of the PE needs to > peer with the RSTP/MSTP protocols running on the CE (and thus > the C-VLAN bridge component is required). > </snip> > > Can anyone explain clearly why PE need not participate in > CE's RSTP/MSTP protocols if attachment circuit(AC) is port > based and why it should participate if AC is vlan based..? > > Thanks, > Rathi >
- Question on RSTP/MSTP between CE and PE Ravindra Rathi
- RE: Question on RSTP/MSTP between CE and PE Ali Sajassi (sajassi)
- Re: Question on RSTP/MSTP between CE and PE Ravindra Rathi