Make Before Break

[ranjeet_badhe]

What is a Make Before Break Mechanism?What is use of make-before-break recovery in frame/Cell mode MPLS ?How do you configure Make-Before-Break?

[adityakaul]

The mechanism is used when an TE-LSP is rerouted. A smooth transition requires support for make before break — the new TE-tunnel must be established and the traffic transferred to it before the old tunnel is torn down.

http://www.cisco.com/en/US/partner/products/sw/iosswrel/ps1612/products_feature_guide09186a008008082d.html

http://www.cisco.com/warp/public/732/Tech/mpls/docs/mpls_te.ppt

http://www.cisco.com/warp/public/cc/pd/iosw/prodlit/mwglp_wp.htm

http://www.ietf.org/rfc/rfc3210.txt

http://www.dataconnection.com/network/download/whitepapers/crldprsvp.pdf