With Saurabh Chopra
Welcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to learn and ask questions MPLS Traffic Engineering can help to best utilize your network with Saurabh Chopra. MPLS TE brings explicit routing capabilities to MPLS networks and is very popular across Service Providers. Traffic Engineering can make best utilization of network resources and avoid non-even load distribution by real-time monitoring traffic and traffic load on each network elements to dynamically tune traffic management attributes, routing parameters and resources constraints. This event is a continuation of the Facebook Forum.
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Say I have tunnel from router A to B. Path: A---C---D--E--B.
If I change tunnel description on head end A then it is not reflected for rest of the nodes until I shutdown that tunnel.
Any idea what could be reason for this and is there any way I can change description of tunnel without any impact.
Actually we have around 400 nodes in network and we want to change description on all with visibility at intermediate nodes of these changes but since these changes are not reflecting in intermediate nodes this whole project is on hold.
Regards # Mahesh
I checked the debugs in SRD and SRE images , change in description doesnot trigger path messages with the new description.
Although with latest images like 151-1.S2 , i see the path messages are triggered ( with the session attribute containing new name ) the moment you change the description on tunnel which makes relevent changes on all the intermediate nodes.
WITH latest image:-
R1(config-if)#description saur2 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
*Jan 15 07:26:46.730: Outgoing PathTear:
*Jan 15 07:26:46.733: SESSION_ATTRIBUTE type 7 length 20:
*Jan 15 07:26:46.734: Setup Prio: 7, Holding Prio: 7
*Jan 15 07:26:46.734: Flags: (0x4) SE Style
*Jan 15 07:26:46.734: Session Name: saur2 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
*Jan 15 07:26:46.734: SENDER_TEMPLATE type 7 length 12:
*Jan 15 07:26:46.734: Tun Sender: 126.96.36.199 LSP ID: 21
*Jan 15 07:26:46.734: SENDER_TSPEC type 2 length 36:
*Jan 15 07:26:46.734: version=0, length in words=7
*Jan 15 07:26:46.734: Token bucket fragment (service_id=1, length=6 words
*Jan 15 07:26:46.734: parameter id=127, flags=0, parameter length=5
*Jan 15 07:26:46.734: average rate=0 bytes/sec, burst depth=1000 bytes
*Jan 15 07:26:46.734: peak rate =0 bytes/sec
*Jan 15 07:26:46.734: min unit=0 bytes, max pkt size=2147483647 bytes
*Jan 15 07:26:46.734: ADSPEC type 2 length 48:
*Jan 15 07:26:46.734: version=0 length in words=10
*Jan 15 07:26:46.734: General Parameters break bit=0 service length=8
*Jan 15 07:26:46.734: IS Hops:0
It seems that the latest images have that enhancement .