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Configuring IP IP Configuration
OmniSwitch 6600 Family Network Configuration Guide April 2006 page 14-13
IP Configuration
IP is enabled on the switch by default and there are few options that can, or need to be, configured. This
section provides instructions for some basic IP configuration options.
Configuring the Router Primary Address
The router primary address is used by advanced routing protocols (e.g., OSPF) to identify the switch on
the network. It is also the address that is used to access the switch for management purposes.
Use the ip router primary-address command to configure the router primary address. Enter the
command, followed by the IP address. For example, to configure a router primary address of
172.22.2.115, you would enter:
-> ip router primary-address 172.22.2.115
Configuring the Router ID
By default, the primary address of the router is used as the router ID. However, if a primary address has
not been configured, the router ID is used by OSPF to identify the switch on the network. The router ID
can be any 32-bit number.
Use the ip router router-id command to configure the router ID. Enter the command, followed by the IP
address. For example, to configure a router ID of 172.22.2.115, you would enter:
-> ip router router-id 172.22.2.115
Configuring the Route Preference of a Router
By default, the route preference of a router is in this order: local, static, OSPF, RIP and BGP (highest to
lowest).
Use the ip route-pref command to change the route preference value of a router. For example, to config-
ure the route preference of an OSPF route, you would enter:
-> ip route-pref ospf 15
Note. BGP is not supported on OmniSwitch 6600.
Configuring the Time-to-Live (TTL) Value
The TTL value is the default value inserted into the TTL field of the IP header of datagrams originating
from the switch whenever a TTL value is not supplied by the transport layer protocol. The value is
measured in hops.
Use the ip default-ttl command to set the TTL value. Enter the command, followed by the TTL value. For
example, to set a TTL value of 75, you would enter:
-> ip default-ttl 75
The default hop count is 64. The valid range is 1 to 255. Use the show ip config command to display the
default TTL value.