Enable Icmp Redirects - Extreme Networks ExtremeWare XOS Command Reference Manual

IP Unicast Commands

enable icmp redirects

enable icmp redirects {vlan <name>}
Description
Enables generation of ICMP redirect messages on one or all VLANs.
Syntax Description
name Specifies a VLAN name.
Default
Enabled.
Usage Guidelines
This option only applies to the switch when the switch is in routing mode.
ICMP redirects are used in the situation where there are multiple routers in the same subnets. If a host
sends a packet to it's default gateway, the gateway router will look at it's route table to find the best
route to the destination. If it sees that the best route is through a router in the same subnet as the
originating host, the switch will send an ICMP redirect (type 5) message to the host that originated the
packet, telling it to use the other router with the better route. The switch will also forward the packet to
the destination.
Example
The following command enables the generation of ICMP redirect messages on all VLANs:
enable icmp redirects
History
This command was first available in ExtremeWare XOS 10.1.
Platform Availability
This command is available on all platforms.
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ExtremeWare XOS 11.3 Command Reference