Specifications

220 Implementing IBM System Networking 10Gb Ethernet Switches
You can use BGP commands to configure the switch to receive routes and to advertise static
routes, fixed routes, and virtual server IP addresses with other internal and external routers.
In the current IBM Networking OS implementation, the RackSwitch G8264 switch does not
advertise BGP routes that are learned from one iBGP speaker to another iBGP speaker.
BGP global configuration
To set the BGP global configuration when using IBM Networking OS, run the
following commands:
򐂰 Run router bgp to enter the router BGP configuration mode.
򐂰 Run neighbor <peer number (1-16)> at the BGP level to configure each BGP peer. Each
border router, within an autonomous system, exchanges routing information with routers
on other external networks.
򐂰 Run as <0-65535> at the BGP level to set the Autonomous System number.
򐂰 Run local-preference <0-4294967294> at the BGP level to set the local preference. The
path with the higher value is preferred. When multiple peers advertise the same route, use
the route with the shortest AS path as the preferred route if you are using eBGP, or use
the local preference if you are using iBGP.
򐂰 Run maximum-paths <0-32> at the BGP level to set maximum paths allowed for an
external route. By default, BGP installs only one path to the IP routing table.
򐂰 Run maximum-paths ibgp <0-32> at the BGP level to set the maximum paths allowed for
an internal route. By default, BGP installs only one path to the IP routing table.
򐂰 Run [no] enable at the BGP level to globally turn on or off BGP.
򐂰 Run show ip bgp to display the current BGP configuration.
BGP peer configuration
Run the following commands to configure BGP peers, which are border routers that
exchange routing information with routers on internal and external networks. The peer option
is disabled by default.
򐂰 Run neighbor <peer number> remote-address <IP address> at the BGP level to define
the IP address for the specified peer (border router), using dotted decimal notation. The
default address is 0.0.0.0.
򐂰 Run neighbor <peer number> remote-as <1-65535> at the BGP level to set the remote
autonomous system number for the specified peer.
򐂰 Run neighbor <peer number> timers hold-time <0, 3-65535> at the BGP level to set the
time, in seconds, that elapse before the peer session is torn down because the switch
does not receive a “keep alive” message from the peer. The default value is
180 seconds.
򐂰 Run neighbor <peer number> timers keep-alive <0, 1-21845> at the BGP level to set
the keep-alive time for the specified peer, in seconds. The default value is 60 seconds.
򐂰 Run neighbor <peer number> advertisement-interval <1-65535> at the BGP level to set
the time, in seconds, between advertisements. The default value is 60 seconds.
򐂰 Run neighbor <peer number> retry-interval <1-65535> at the BGP level to set the
connection retry interval, in seconds. The default value is 120 seconds.
Important: BGP is turned off by default.