Cisco Systems OL-4580-01 Switch User Manual


 
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Cisco Content Services Switch Routing and Bridging Configuration Guide
OL-4580-01
Chapter 1 Configuring Interfaces and Circuits
Configuring Circuits
Configuring Circuit-IP Redirects
By default, the transmission of Internet Control Message Protocol (ICMP)
redirect messages is enabled. To disable the transmission of ICMP redirect
messages, enter:
(config-circuit-ip[VLAN7-172.16.6.58])# no redirects
To reenable the transmission of ICMP redirect messages, use the redirects
command. For example:
(config-circuit-ip[VLAN7-172.16.6.58])# redirects
Configuring Circuit-IP Unreachables
By default, the transmission of ICMP Destination Unreachable is enabled. To
disable the transmission of ICMP Destination Unreachable messages, enter:
(config-circuit-ip[VLAN7-172.16.6.58])# no unreachables
Use the unreachables command to enable the transmission of ICMP Destination
Unreachable messages. The default state is enabled.
For example:
(config-circuit-ip[VLAN7-172.16.6.58])# unreachables
Configuring Router-Discovery Preference for a Circuit IP Interface
To enable router discovery and configure the router discovery preference value for a
circuit IP interface, use the router-discovery command. When enabled, router
discovery transmits packets with the “all-hosts” multicast address of 244.0.0.1.
Note To enable an interface to transmit packets with the limited broadcast multicast
address of 255.255.255.255, use the router-discovery limited-broadcast
command in circuit mode (see the “Configuring Router-Discovery
Limited-Broadcast” section). Router discovery is disabled by default.