ECS4660-28F_Management Guide-R03

C HAPTER 51 | IP Routing Commands
Border Gateway Protocol (BGPv4)
– 1865 –
COMMAND USAGE
◆ If the specified access list for input or output mode does not exist, all
input or output route updates will be filtered.
◆ The neighbor prefix-list and the neighbor distribute-list commands are
mutually exclusive for a BGP peer. That is, only one of these commands
may be applied in the inbound or outbound direction.
EXAMPLE
Console(config-router)#neighbor 10.1.1.64 distribute-list RD in
Console(config-router)#
neighbor dont-
capability-negotiate
This command disables capability negotiation when creating connections.
Use the no form to restore the default setting.
SYNTAX
[no] neighbor {ip-address | group-name} dont-capability-
negotiate
ip-address – IP address of a neighbor.
group-name – A BGP peer group containing a list of neighboring
routers configured with the neighbor peer-group command.
COMMAND MODE
Router Configuration
DEFAULT SETTING
Capability negotiation is enabled
COMMAND USAGE
Earlier versions of BGPv4 require that when a BGP speaker receives an
Open message with one or more unrecognized Optional Parameters, the
speaker must terminate BGP peering. This command can be used when
connecting to a partner known to use an older BGP version which does not
support capabilities negotiation (RFC 2842), thereby allowing the peering
session to continue.
EXAMPLE
Console(config-router)#neighbor 10.1.1.64 dont-capability-negotiate
Console(config-router)#