Brocade Network OS Command Reference v4.1.0 - Manual (Page 438)

400 Network OS Command Reference
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ip unreachable
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ip unreachable
Prohibits routers from forwarding an Internet Control Message Protocol (ICMP) Destination
Unreachable Code 3 (port unreachable) message on a point-to-point link back onto the ingress
port.
Synopsis ip unreachable
no ip unreachable
Operands None
Defaults This command is enabled by default.
Command Modes Global configuration mode
Description This command prohibits routers from forwarding a Destination Unreachable Code 3 (port
unreachable) message on point-to-point links back onto the ingress port.
By default, ICMP Destination Unreachable Code 3 messages are sent for a discarded IP packet.
You can disable the sending of these messages.
Usage Guidelines Use the no ip unreachable command to disable the sending of these messages.
This is an interface-specific configuration The configuration is persistent across a switch reload.
Examples None
See Also ipv6 unreachable