Bgp4+ Overview - Brocade Communications Systems ICX 7250 Series Configuration Manual

BGP4+
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BGP4+ overview.............................................................................................................................................................................................397

• BGP global mode ......................................................................................................................................................................................... 397
• IPv6 unicast address family....................................................................................................................................................................... 398
• BGP4+ neighbors.......................................................................................................................................................................................... 399
• BGP4+ peer groups...................................................................................................................................................................................... 399
• BGP4+ next hop recursion......................................................................................................................................................................... 400
• BGP4+ NLRIs and next hop attributes..................................................................................................................................................400
• BGP4+ route reflection................................................................................................................................................................................ 401
• BGP4+ route aggregation...........................................................................................................................................................................401
• BGP4+ multipath............................................................................................................................................................................................401
• Route maps.......................................................................................................................................................................................................402
• BGP4+ outbound route filtering...............................................................................................................................................................402
• BGP4+ confederations.................................................................................................................................................................................402
• BGP4+ extended community................................................................................................................................................................... 403
• BGP4+ graceful restart................................................................................................................................................................................ 403
• Configuring BGP4+.......................................................................................................................................................................................403
BGP4+ overview
The implementation of IPv6 supports multiprotocol BGP (MBGP) extensions that allow Border Gateway Protocol version 4 plus
(BGP4+) to distribute routing information. BGP4+ supports all of the same features and functionality as IPv4 BGP (BGP4).
IPv6 MBGP enhancements include:
• An IPv6 unicast address family and network layer reachability information (NLRI)
• Next hop attributes that use IPv6 addresses
NOTE
The implementation of BGP4+ supports the advertising of routes among different address families. However, it supports
BGP4+ unicast routes only; it does not currently support BGP4+ multicast routes.
BGP global mode
Configurations that are not specific to address family configuration are available in the BGP global configuration mode.
device(config-bgp-router)# ?
Possible completions:
address-family
address-filter
aggregate-address
always-compare-med
always-propagate
as-path-filter
as-path-ignore
bgp-redistribute-internal
capability
clear
Brocade FastIron Layer 3 Routing Configuration Guide
53-1003903-04
Enter Address Family command mode
Configure IP address filters
Configure BGP aggregate entries
Allow comparing MED from different neighbors
Allow readvertisement of best BGP routes not in
IP forwarding table
Configure autonomous system path filters
Ignore AS_PATH length info for best route
selection
Allow redistribution of iBGP routes into IGPs
Set capability
Clear table/statistics/keys
397