Reference Guide
796 | IPv6 Border Gateway Protocol (IPv6 BGP)
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Command
History
neighbor maximum-prefix
c e
Control the number of network prefixes received.
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
Defaults
threshold
= 75
Command Modes
ROUTER BGPV6-ADDRESS FAMILY
Command
History
Usage
Information
If the neighbor maximum-prefix is configured and the neighbor receives more prefixes than
allowed by the neighbor maximum-prefix command configuration, the neighbor goes down
and the show ip bgp ipv6 unicast summary command displays (prfxd) in the State/PfxRcd
column for that neighbor. The neighbor remains down until you enter the capture bgp-pdu
max-buffer-size command for the neighbor or the peer group to which the neighbor belongs
or you enter neighbor shutdown and neighbor no shutdown commands.
Version 8.4.2.1 Introduced on C-Series and S4810
Version 8.2.1.0 Introduced on E-Series ExaScale
Version 7.4.1.0 Introduced on E-Series TeraScale
ipv6-address
Enter the IPv6 address in the x:x:x:x::x format.
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.
Range: 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 E-Series software sends a
message.
Range: 1 to 100 percent.
Default: 75
warning-only
(OPTIONAL) Enter the keyword warning-only to set the router
to send a log message when the maximum value is reached. If this
parameter is not set, the router stops peering when the maximum
number of prefixes is reached.
Version 8.4.2.1 Introduced on C-Series and S4810
Version 8.2.1.0 Introduced on E-Series ExaScale
Version 7.4.1.0 Introduced on E-Series TeraScale










