Users Guide

maximum-prefix
Configures the maximum number of prefixes allowed from a peer.
Syntax
maximum-prefix {number [threshold] [warning]}
Parameters
● number—Enter a maximum prefix 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 prefixes limit exceeds.
Default 75% threshold
Command Mode ROUTER-BGP-NEIGHBOR-AF
Usage
Information
If you configure this command and the neighbor receives more prefixes than the configuration allows, the
neighbor goes down. To view the prefix 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 IP or unnumbered peer and enters Neighbor Configuration mode.
Syntax
neighbor {ip-address | interface interface-type}
Parameters
● ip-address—Enter the IPv4 or IPv6 address of the neighbor.
● interface interface-type—Enter the interface that connects to an unnumbered neighbor.
● unnumbered-auto—Configure one or more BGP auto unnumbered neighbors.
Default Not configured
Command Mode CONFIG-ROUTER-BGP
Usage
Information
Create a remote peer with the BGP neighbor.
If you configure an unnumbered interface using the interface option, ensure that the interface is in
Layer 3 mode. Also, enable Router Advertisement on required interfaces using the ipv6 nd send-ra
command. If you do not enable Router Advertisement, the BGP neighborship does not form. Dell EMC
networking recommends configuring the minimum and maximum advertisement intervals as 3 s and 4 s,
respectively.
NOTE: You cannot configure the default VLAN as the connecting interface for an unnumbered
neighbor.
NOTE: To configure these settings for a nondefault VRF instance, you must first 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.
The
no version of this command disables the BGP neighbor configuration.
Example
The following is an example for configuring an unnumbered BGP neighbor:
OS10(config)# interface vlan 100
OS10(conf-if-vl-100)# ipv6 nd max-ra-interval 4
OS10(conf-if-vl-100)# ipv6 nd min-ra-interval 3
Layer 3 675