Connectivity Guide

NOTE: To congure these settings for a non default VRF instance, you must rst enter the ROUTER-
CONFIG-VRF sub mode using the following commands:
1 Enter the ROUTER BGP mode using the router bgp as-number command.
2 From the ROUTER BGP mode, enter the ROUTER BGP VRF mode using the vrf vrf-name
command.
Example (EBGP)
OS10(conf-router-bgp-2)# maximum-paths ebgp 2 maxpaths
Example (IBGP)
OS10(conf-router-bgp-2)# maximum-paths ibgp 4 maxpaths
Supported Releases 10.3.0E or later
maximum-prex
Congures the maximum number of prexes allowed from a peer.
Syntax
maximum-prefix {number [threshold] [warning]}
Parameters
• number—Enter a maximum prex number, from 1 to 4294967295.
• threshold—(Optional) Enter a threshold percentage, from 1 to 100.
• warning-only — (Optional) Enter to set the router to send a warning log message when the maximum limit
is exceeded. If you do not set this parameter, the router stops peering when the maximum prexes limit
exceeds.
Default 75% threshold
Command Mode ROUTER-BGP-NEIGHBOR-AF
Usage Information If you congure this command and the neighbor receives more prexes than the conguration allows, the neighbor
goes down. To view the prex information, use the show ip bgp summary command. The neighbor remains
down until you use the clear ip bgp command for the neighbor or the peer group to which the neighbor
belongs. The
no version of this command resets the value to the default.
Example
OS10(conf-router-bgp-neighbor-af)# maximum-prefix 20 100 warning-only
Supported Releases 10.3.0E or later
neighbor
Creates a remote peer for the BGP neighbor and enters BGP Neighbor mode.
Syntax
neighbor ip address
Parameters ip address — Enter the IP address of the neighbor in dotted decimal format.
Default Not congured
Command Mode CONFIG-ROUTER-BGP
Usage Information Create a remote peer with the BGP neighbor. Always enter the IP address of a BGP peer with this command. The
command does not validate if the congured peer address is a local IP address. The no version of this command
disables the BGP neighbor conguration.
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