Configuring Icmp Unreachable Rate Limiting User Feedback - Cisco ASR 1000 Series Configuration Manual

Configuring IP Services
Command or Action
Example:
Device> enable
Step 2
configure terminal
Example:
Device# configure terminal
Step 3 no ip source-route
Example:
Device(config)# no ip source-route
Step 4 interface type/number/slot
Example:
Device(config)# interface GigabitEthernet
0/0/0
Step 5
no ip unreachables
Example:
Device(config-if)# no ip unreachables
Step 6
no ip redirects
Example:
Device(config-if)# no ip redirects
Step 7 no ip mask-reply
Example:
Device(config-if)# no ip mask-reply

Configuring ICMP Unreachable Rate Limiting User Feedback

Perform this task to clear all of the unreachable destination packet statistics and to specify an interval number
for unreachable destination messages. This task also configures a packet counter (threshold) and interval to
trigger a logging message to a console. This task is beneficial to begin a new log after the thresholds have
been set.
Purpose
• Enter your password if prompted.
Enters global configuration mode.
Disables IP source routing.
Specifies the interface to configure and enters interface
configuration mode.
Disables the sending of ICMP protocol unreachable and host
unreachable messages. This command is enabled by default.
Note
Disables the sending of ICMP redirect messages to learn routes.
This command is enabled by default.
Disables the sending of ICMP mask reply messages.
IP Application Services Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 1000)
Configuring ICMP Unreachable Rate Limiting User Feedback
Disabling the unreachable messages also disables IP
Path MTU Discovery because path discovery works by
having the software send unreachable messages.
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