Cisco Systems OL-14361-01 manual OSPFv2 and v3 Configuration Limits, 123

Chapter 5 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

Table 5-6summarizes the maximum limits for OSPF, including the commands used to display and change the limits.

Table 5-6	OSPFv2 and OSPFv3 Configuration Limits and Commands
		Default	Absolute
Feature Limit		Maximum	Maximum	Configuration Command	Show Current Settings Command
Description		Limit	Limit	(Router Configuration Mode)	(EXEC Mode)
Maximum number of		255	1024	maximum interfaces n	show ospf
interfaces that can be
configured for an
OSPF instance
Maximum routes		10,000	4294967295	maximum redistributed-prefixes	show ospf
redistributed into				n	Note The maximum number of
OSPF
					redistributed prefixes is
					displayed only if
					redistribution is
					configured.
Maximum number of		32	32	maximum paths n	show running-config router ospf
parallel routes		(OSPFv2)			Note This command shows only
(maximum paths) on
		16			changes to the default
Cisco CRS-1 routers
		(OSPFv3)			value. If the maximum
					paths command does not
					appear, the router is set to
					the default value.
Maximum number of		16	16	maximum paths n	show running-config router ospf
parallel routes					Note This command shows only
(maximum paths) on a
					changes to the default
Cisco XR 12000
					value. If the maximum
Series Router
					paths command does not
					appear, the router is set to
					the default value.

	Cisco IOS XR Getting Started Guide
OL-14361-01		5-123