Dell FCX624-S Laptop User Manual


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PowerConnect B-Series FCX Configuration Guide 819
53-1002266-01
Configuring IP parameters – Layer 3 Switches
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The administration parameter disables ICMP Unreachable (caused by Administration action)
messages.
The fragmentation-needed parameter disables ICMP Fragmentation-Needed But Do
not-Fragment Bit Set messages.
The host parameter disables ICMP Host Unreachable messages.
The port parameter disables ICMP Port Unreachable messages.
The protocol parameter disables ICMP Protocol Unreachable messages.
The source-route-fail parameter disables ICMP Unreachable (caused by Source-Route-Failure)
messages.
To disable ICMP Host Unreachable messages but leave the other types of ICMP Unreachable
messages enabled, enter the following commands instead of the command shown above.
PowerConnect(config)# no ip icmp unreachable host
If you have disabled all ICMP Unreachable message types but you want to re-enable certain types,
for example ICMP Host Unreachable messages, you can do so by entering the following command.
PowerConnect(config)# ip icmp unreachable host
Disabling ICMP Redirect Messages
You can disable or re-enable ICMP redirect messages. By default, a Layer 3 Switch sends an ICMP
redirect message to the source of a misdirected packet in addition to forwarding the packet to the
appropriate router. You can disable ICMP redirect messages on a global basis or on an individual
port basis.
NOTE
The device forwards misdirected traffic to the appropriate router, even if you disable the redirect
messages.
To disable ICMP redirect messages globally, enter the following command at the global CONFIG
level of the CLI:
PowerConnect(config)# no ip icmp redirect
Syntax: [no] ip icmp redirects
To disable ICMP redirect messages on a specific interface, enter the following command at the
configuration level for the interface:
PowerConnect(config)# interface ethernet 3/11
PowerConnect(config-if-e1000-3/11)# no ip redirect
Syntax: [no] ip redirect
Configuring static routes
The IP route table can receive routes from the following sources:
Directly-connected networks – When you add an IP interface, the Layer 3 Switch automatically
creates a route for the network the interface is in.