Allied Telesis AT-WA1104G-10 manual CR00014241

Features in 291-04 84

CR	Module	Level	Description
CR00014241	BGP	-	This enhancement enables you to force BGP to select the best route on the basis
	IP Gateway		of network prefix alone, instead of on the basis of preference, then metric, then
			network prefix.
			To do this:
			1. Give the desired dynamic routing protocol a preference of 0, which is the
			preference of interface routes, by using the command:
			SET IP ROUte PREFerence=0 PROTocol={BGP-extBGP-intOSPF-EXT1
			OSPF-EXT2OSPF-INTErOSPF-INTRaOSPF-OtherRIPALL}
			2. Create a route map to give matching routes the same metric as your interface
			routes. To change the metric, use the command:
			ADD IP ROUTEMap=routemap ENTry=1..4294967295 SET METric=1
			3. Add the route map as a filter to the BGP peers by using the command:
			ADD BGP PEer=ipadd REMoteas=1..65534 INRoutemap=routemap [other
			optional parameters]
			The above process gives matching routes the same preference and metric as
			interface routes. This forces IP routing to compare the network prefixes of the
			interface route and the other routes. IP routing then chooses the most specific
			route as the best route for that destination, instead of automatically choosing the
			interface route as the best route without considering any other routes which may
			have more specific network prefixes.

AR400	AR7x5	AR7x0S	Rapier i	AT8800-	AT-8600	AT-8700XL	x90048-	AT-9900	AT-9800
Y	Y	Y	Y	Y	–	–	Y	Y	Y

Version 291-10

C613-10488-00 REV G