Chapter 5 Configuring Additional Router Features

Configuration Limiting

Static Route Configuration Limits

Table 5-4summarizes the maximum limits for static routes, including the commands used to display and change the limits.

Table 5-4

Static Route Configuration Limits and Commands

 

 

 

 

 

 

 

 

 

Default

Absolute

Configuration Command

 

 

 

Maximum

Maximum

(Static Router Configuration

Show Current Settings Command

Feature Limit Description

Limit

Limit

Mode)

(EXEC or Global Configuration Mode)

 

 

 

 

 

Maximum static IPv4 routes

4000

40,000

maximum path ipv4 n

show running-config router static

 

 

 

 

 

Maximum static IPv6 routes

4000

40,000

maximum path ipv6 n

show running-config router static

 

 

 

 

 

 

Examples

In the following example, the maximum number of static IPv4 routes is changed to 5000 and the new configuration is displayed.

RP/0/RP1/CPU0:router# configure

RP/0/RP1/CPU0:router(config)# router static

RP/0/RP1/CPU0:router(config-static)# maximum path ipv4 5000

RP/0/RP1/CPU0:router(config-static)# commit

RP/0/RP1/CPU0:router(config-static)# show running-config router static

router static

maximum path ipv4 5000 address-family ipv4 unicast

0.0.0.0/0 172.29.52.1

!

!

IS-IS Configuration Limits

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

Table 5-5

IS-IS Configuration Limits and Commands

 

 

 

 

 

 

 

 

 

 

 

Default

Absolute

 

 

Show Current Settings

 

 

Maximum

Maximum

 

Configuration Command

Command

Feature Limit Description

Limit

Limit

 

(Address Family Configuration Mode)

(EXEC Mode)

 

 

 

 

 

 

Maximum number of prefixes

10,000

28,000

 

maximum-redistributed-prefixes n

show isis adjacency

redistributed into IS-IS

 

 

 

 

 

 

 

 

 

 

 

Number of active parallel paths

8

32

 

maximum-paths n

show isis route

for each route on a Cisco CRS-1

 

 

 

 

 

router

 

 

 

 

 

 

 

 

 

 

 

 

Number of active parallel paths

8

16

 

maximum-paths n

show isis route

for each route on a

 

 

 

 

 

Cisco XR 12000 Series Router

 

 

 

 

 

 

 

 

 

 

 

 

 

Cisco IOS XR Getting Started Guide

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Cisco Systems OL-14361-01 manual Static Route Configuration Limits, IS-IS Configuration Limits, 122