Reference Guide

652 | IPv4 Routing
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Defaults
Not configured.
Command Modes
CONFIGURATION
Command
History
Usage
Information
Using the following example of a static route:
ip route 33.33.33.0 /24 gigabitethernet 0/0 172.31.5.43
• The software installs a next hop that is not on the directly connected subnet but which recursively
resolves to a next hop on the interface’s configured subnet. In the example, if gig 0/0 has ip
address on subnet 2.2.2.0 and if 172.31.5.43 recursively resolves to 2.2.2.0, FTOS installs the
static route.
• When the interface goes down, FTOS withdraws the route.
• When the interface comes up, FTOS re-installs the route.
• When recursive resolution is “broken,” FTOS withdraws the route.
• When recursive resolution is satisfied, FTOS re-installs the route.
interface
Enter the following keywords and slot/port or number information:
• For a 1-Gigabit Ethernet interface, enter the keyword
GigabitEthernet followed
by the slot/port information.
• For a loopback interface, enter the keyword
loopback followed by a number
from zero (0) to 16383.
• For the null interface, enter the keyword
null followed by zero (0).
• For a Port Channel interface, enter the keyword
port-channel followed by a
number:
C-Series and S-Series Range: 1-128
E-Series Range: 1 to 32 for EtherScale, 1 to 255 for TeraScale and 1 to 512 for
ExaScale.
• For a SONET interface, enter the keyword
sonet followed by the sonet followed
by the slot/port information.
• For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet
followed by the slot/port information.
• For a VLAN, enter the keyword
vlan followed by a number from 1 to 4094.
distance
(OPTIONAL) Enter a number as the distance metric assigned to the route.
Range: 1 to 255
permanent (OPTIONAL) Enter the keyword permanent to specify the route is not removed,
even if the interface assigned to that route goes down. The route must be up initially to
install it in the routing table.
If you disable the interface with an IP address associated with the keyword
permanent, the route disappears from the routing table.
tag tag-value (OPTIONAL) Enter the keyword tag followed by a number to assign to the route.
Range: 1 to 4294967295
Version 8.2.1.0 Support 4094 VLANs on E-Series ExaScale (prior limit was 2094)
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 7.9.1.0 Introduced VRF on the E-Series
Version 7.6.1.0 Introduced on S-Series
Version 7.5.1.0 Introduced on C-Series
pre-Version 6.1.1.0 Introduced for E-Series