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PIR = CIR (1 + Be / Bc)

2015年1月2日 / posted in CCIE, ネットワーク / No Comments

shape peak <CIR> <Bc> <Be>

maximum burst rate = shape peak rate

http://blog.ine.com/2008/08/26/understanding-the-shape-peak-command/

http://brbccie.blogspot.jp/2012/12/a-different-perspective-on-cir-pir-tc_1785.html

http://www.techexams.net/forums/ccie/46786-shape-peak-vs-shape-average.html

http://www.flashcardmachine.com/ccie-traffic-shaping.html

 

 

The router ID should match BGP and OSPF when you are using BGP synchronization

2015年1月2日 / posted in CCIE, ネットワーク / No Comments

Oh, I didn’t know this restriction…

http://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/13753-25.html#background

If BGP synchronization is enabled, there must be a match for the prefix in the IP routing table in order for an internal BGP (iBGP) path to be considered a valid path. BGP synchronization is enabled by default in Cisco IOS® Software. If the matching route is learned from an Open Shortest Path First (OSPF) neighbor, its OSPF router ID must match the BGP router ID of the iBGP neighbor. Most users prefer to disable synchronization with use of the no synchronization BGP subcommand.

BGP sync feature is not used now normally…