Hi Edward,
Thank you for the comments. I add l2vpn
maillist in cc list. I agree with the application you proposed, and in
order to improve the scalability of VPLS, P2MP PW multiplexed to HSMP LSP
could be used for VPLS. Actually this is a good application case for P2MP
PW with reverse path (section 4.4, draft-ietf-pwe3-p2mp-pw-00). We can
add some description about this use case.
Regards
Lizhong
Ed <maillist.ed <at> gmail.com> wrote on 2011-01-05
15:05:30:
> Hi Lizhong,
>
> I think one possible application for HSMP LSPs
is to reduce the
> overall broadcast/multicast utilization on a VPLS. In current VPLS
> implementations with a full mesh of P2P LSPs between PEs, broadcast,
> multicast and unknown traffic are not efficiently propagated on the
> physical links between PEs and Ps.
>
> In the VPLS implementation scenario with HSMP
LSPs, each PE signals
> a HSMP LSP with itself as a root to all other PEs in the VPLS.
> Thereafter, all broadcast/multicast/unknown traffic from this PE
> will use this HSMP LSP. Unicast traffic from a particular PE (e.g.
> PE1) to another PE (e.g. PE2) will be sent from leaf to root using
> the HSMP LSP where PE2 is the root.
>
> This simplifies the VPLS implementation by:
> -
Reducing traffic utilization from broadcast, multicast
> and unknown traffic
> -
Reducing the total number of LSPs maintained by each PE
> (i.e. instead of requiring a full mesh of LSPs, now only require one
> HSMP LSP per PE).
>
> This is similar to the idea expressed in
draft-key-l2vpn-etree-
> frwk-03.txt (in a more general sense).
>
> What do you think? Would HSMP LSP be suitable
for this?
>
> Regards,
> Edward
>
>
>
> On Wed, Jan 5, 2011 at 5:24 PM, <lizhong.jin <at> zte.com.cn>
wrote:
>
> Hi all,
> During IETF 79 Beijing, we made a presentation for HSMP LSP at MPLS
session.
> HSMP LSP has several use cases described in the draft, e.g, time
> synchronization in MPLS network, IPTV scenario, or P2MP PW. It would
> be appreciated if you could give more scenarios for HSMP LSP. Please
> review the draft, and any comments are welcome.
>
> The draft link is: http://tools.ietf.org/html/draft-jin-jounay-mpls-
> mldp-hsmp-01
>
> Thank you.
> Authors of draft-hsmp.
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