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Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide
OL-28417-02
Chapter Configuring Additional Router Features
Configuration Limiting
IS-IS Configuration Limits
Table 14 summarizes the maximum limits for Intermediate System to Intermediate System (IS-IS)
routing protocol, including the commands used to display and change the limits.
Examples
The following example shows 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/RSP1/CPU0:router# configure
RP/0/RSP1/CPU0:router(config)# router isis 100 address-family ipv4
RP/0/RSP1/CPU0:router(config-isis-af)# maximum-paths 10
RP/0/RSP1/CPU0:router(config-isis-af)# maximum-redistributed-prefixes 12000
RP/0/RSP1/CPU0:router(config-isis-af)# commit
RP/0/RSP1/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/RSP1/CPU0:router(config-isis-af)#
OSPFv2 and v3 Configuration Limits
Table 15 summarizes the maximum limits for Open Shortest Path First (OSPF) protocol, including the
commands used to display and change the limits.
Ta b l e 14 IS-IS Configuration Limits and Commands
Feature Limit
Description
Default Maximum
Limit
Absolute Maximum
Limit
Configuration Command
(Address Family Configuration
Mode)
Show Current
Settings Command
(EXEC Mode)
Maximum number
of prefixes
redistributed into
IS-IS
10,000 20,000
1
maximum-redistributed-prefix
es n
show isis adjacency
Number of active
parallel paths for
each route on a
Cisco ASR 9000 Se
ries Router
88 maximum-paths n show isis route
1. This limit is for ASR 9000 Ethernet LCs. The actual number differs depending on the LC on the system.