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Cisco IOS XR Getting Started Guide
OL-14361-01
Chapter5 Configuring Additional Router Features
Configuration Limiting
Examples
In the following example, the maximum number of active parallel paths for each route is increased to
10, and the maximum number of prefixes redistributed into IS-IS is increased to 12,000:
RP/0/RP1/CPU0:router# configure
RP/0/RP1/CPU0:router(config)# router isis 100 address-family ipv4
RP/0/RP1/CPU0:router(config-isis-af)# maximum-paths 10
RP/0/RP1/CPU0:router(config-isis-af)# maximum-redistributed-prefixes 12000
RP/0/RP1/CPU0:router(config-isis-af)# commit
RP/0/RP1/CPU0:Mar 30 14:11:07 : config[65739]: %LIBTARCFG-6-COMMIT : Configuration
committed by user 'cisco'. Use 'show configuration commit changes 1000000535' to view
the changes.
RP/0/RP1/CPU0:router(config-isis-af)#
OSPFv2 and v3 Configuration Limits
Tabl e 5-6 summarizes the maximum limits for OSPF, including the commands used to display and
change the limits.
Table5-6 OSPFv2 and OSPFv3 Configuration Limits and Commands
Feature Limit
Description
Default
Maximum
Limit
Absolute
Maximum
Limit
Configuration Command
(Router Configuration Mode)
Show Current Settings Command
(EXEC Mode)
Maximum number of
interfaces that can be
configured for an
OSPF instance
255 1024 maximum interfaces nshow ospf
Maximum routes
redistributed into
OSPF
10,000 4294967295 maximum redistributed-prefixes
n
show ospf
Note The maximum number of
redistributed prefixes is
displayed only if
redistribution is
configured.
Maximum number of
parallel routes
(maximum paths) on
Cisco CRS-1 routers
32
(OSPFv2)
16
(OSPFv3)
32 maximum paths nshow running-config router ospf
Note This command shows only
changes to the default
value. If the maximum
paths command does not
appear, the router is set to
the default value.
Maximum number of
parallel routes
(maximum paths) on a
Cisco XR 12000
Series Router
16 16 maximum paths nshow running-config router ospf
Note This command shows only
changes to the default
value. If the maximum
paths command does not
appear, the router is set to
the default value.