Dell PowerConnect B-RX - Disabling ICMP Redirect Messages; Configuring Static Routes

198 BigIron RX Series Configuration Guide
53-1002253-01
Configuring forwarding parameters
7
BigIron RX(config)# ip icmp unreachable host
BigIron RX(config)# ip icmp unreachable network
The commands shown above re-enable ICMP Unreachable Host messages and ICMP Network
Unreachable messages.
Disabling ICMP redirect messages
You can disable or re-enable ICMP redirect messages. By default, the device 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.
BigIron RX(config)# no ip icmp redirects
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.
BigIron RX(config)# int e 3/11
BigIron RX(config-if-e100-3/11)# 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 device automatically creates
a route for the network the interface is in.
• RIP – If RIP is enabled, the device can learn about routes from the advertisements other RIP
routers send to the device. If the route has a lower administrative distance than any other
routes from different sources to the same destination, the device places the route in the IP
route table.
• OSPF – See RIP, but substitute “OSPF” for “RIP”.
• BGP4 – See RIP, but substitute “BGP4” for “RIP”.
• Default network route – A statically configured default route that the device uses if other
default routes to the destination are not available. Refer to “Configuring a default network
route” on page 208.
• Statically configured route – You can add routes directly to the route table. When you add a
route to the IP route table, you are creating a static IP route. This section describes how to add
static routes to the IP route table.