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IP Router Configuration
7750 SR OS Router Configuration Guide Page 109
Router Interface ICMP Commands
icmp
Syntax icmp
Context config>router>interface ip-int-name
Description This command enables access to the context to configure Internet Control Message Protocol (ICMP)
parameters on a network IP interface. ICMP is a message control and error reporting protocol that
also provides information relevant to IP packet processing.
mask-reply
Syntax [no] mask-reply
Context config>router>if>icmp
Description This command enables responses to ICMP mask requests on the router interface.
If a local node sends an ICMP mask request to the router interface, the mask-reply command
configures the router interface to reply to the request.
The no form of the command disables replies to ICMP mask requests on the router interface.
Default mask-reply — replies to ICMP mask requests.
redirects
Syntax redirects [number seconds]
no redirects
Context config>router>if>icmp
Description This command enables and configures the rate for ICMP redirect messages issued on the router
interface.
When routes are not optimal on this router, and another router on the same subnetwork has a better
route, the router can issue an ICMP redirect to alert the sending node that a better route is available.
The redirects command enables the generation of ICMP redirects on the router interface. The rate at
which ICMP redirects are issued can be controlled with the optional number and time parameters by
indicating the maximum number of redirect messages that can be issued on the interface for a given
time interval.
By default, generation of ICMP redirect messages is enabled at a maximum rate of 100 per 10 second
time interval.
The no form of the command disables the generation of ICMP redirects on the router interface.
Default redirects 100 10 — maximum of 100 redirect messages in 10 seconds