Administrator Guide
Command Modes ROUTER BGPV6-ADDRESS FAMILY
Command History
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.2.1.0 Introduced on the E-Series ExaScale.
7.4.1.0 Introduced
neighbor maximum-prefix
Control the number of network prefixes received.
C9000 Series
Syntax
neighbor {ipv6-address | peer-group-name} maximum-prefix maximum [threshold]
[warning-only]
To return to the default values, use the no neighbor {ipv6-address | peer-group-name}
maximum-prefix maximum [threshold] [warning-only] command.
Parameters
ipv6-address
Enter the IPv6 address in the x:x:x:x::x format.
NOTE: The :: notation specifies successive hexadecimal fields of zeros.
peer-group-name
Enter the name of the peer group.
maximum
Enter a number as the maximum number of prefixes allowed for this BGP router. The
range is 1 to 4294967295.
threshold
(OPTIONAL) Enter a number to be used as a percentage of the maximum value. When
the number of prefixes reaches this percentage of the maximum value, the software
sends a message. The range is 1 to 100 percent. The default is 75.
warning-only (OPTIONAL) Enter the keywords warning-only to set the router to send a log
message when the maximum value is reached. If you do not set this parameter, the router
stops peering when the maximum number of prefixes is reached.
Defaults threshold = 75
Command Modes ROUTER BGPV6-ADDRESS FAMILY
Command History
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.2.1.0 Introduced on the E-Series ExaScale.
7.4.1.0 Introduced
Usage Information If you configure the neighbor maximum-prefix command and the neighbor receives more prefixes than
allowed by the neighbor maximum-prefix command configuration, the neighbor goes down and the show
ip bgp summary command displays (prfxd) in the State/PfxRcd column for that neighbor. The neighbor
remains down until you enter the clear ip bgp command for the neighbor or the peer group to which the
neighbor belongs or you enter the neighbor shutdown and neighbor no shutdown commands.
Related
Commands
show ip bgp summary – displays the current BGP configuration.
444 Border Gateway Protocol