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Question on draft-ietf-tewg-qos-routing-01.txt
I've read the draft draft-ietf-tewg-qos-routing-01.txt but met some
questions, is there anyone
would like to do me a favor to answer them ?
The following is the question I met:
1. In Annex 2, it is stated EDR shows better performance than FR, TDR &
SDR, and load state is preferred to shortest path in path
selecting(Annex 2, P13).
But, How multi-path is tried in IP networks ? signalling with
RSVP-TE or CR-LDP?
If each connection is set up by this way, will the signalling
procedure bring much overhead ?
If all paths failed , how to deal with the communication request ?
drop or do with best-effort ?
2. It is stated that Interdomain TE can be built as that in
intradomain( Annex 2, P13), but there are protocols like BGP
working in current IP networks which do not maintein any traffic
implements a business-relationship constrained routing method. Is
any relationship between EDR and BGP in internet ?
3. In Annex3 P24, it is stated that bandwidth reservation should be
included in IP networks, and per-VNET reservation is recommended,
but how is VNET defined in a network ?
just by SN and DN? MPLS reservation prcedure and Diffserv is
recommended , but MPLS can implement QoS
by using EXP bits , it does not need Diffserv to set up Queueing
4. In Annex4 P13, it is stated "internetwork E can use various path
selection methods in delivering connection/bandwidth-allocation
requests ", the example network
give a interconnected networks with different routing methods. But,
if it is implemented in this way , should
those nodes of internetwork E exchange serval types of routing
5. How do you simulate such a large network ? I means which tools can
be used to simulate TE & QoS algothrim in a multiservice network?
How can I simulate a Gamma distributed traffic over a 132 nodes
Thanks in advance