Cabletron Systems SmartSwitch manual Where, Autonomous-system number

Chapter 10: BGP Configuration Guide

where:

peer-group<number-or-string>

Is a group ID, which can be a number or a character string.

type Specifies the type of BGP group you are adding. You can specify one of the following:

external In the classic external BGP group, full policy checking is applied to all incoming and outgoing advertisements. The external neighbors must be directly reachable through one of the machine's local interfaces.

routing An internal group which uses the routes of an interior protocol to resolve forwarding addresses. Type Routing groups will determine the immediate next hops for routes by using the next hop received with a route from a peer as a forwarding address, and using this to look up an immediate next hop in an IGP’s routes. Such groups support distant peers, but need to be informed of the IGP whose routes they are using to determine immediate next hops. This implementation comes closest to the IBGP implementation of other router vendors.

internal An internal group operating where there is no IP-level IGP, for example an SMDS network. Type Internal groups expect all peers to be directly attached to a shared subnet so that, like external peers, the next hops received in BGP advertisements may be used directly for forwarding. All Internal group peers should be L2 adjacent.

igp An internal group operating where there is no IP-level IGP; for example, an SMDS network.

autonomous-system <number>

Specifies the autonomous system of the peer group. Specify a number from 1 – 65534.

proto Specifies the interior protocol to be used to resolve BGP next hops. Specify one of the following:

any Use any igp to resolve BGP next hops.

rip Use RIP to resolve BGP next hops.

ospf Use OSPF to resolve BGP next hops.

static Use static to resolve BGP next hops.

interface <name-or-IPaddr> all

Interfaces whose routes are carried via the IGP for which third-party next hops may be used instead. Use only for type Routing group. Specify the interface or all for all interfaces.

130 SmartSwitch Router User Reference Manual