Reference Guide

IPv4 Routing | 703
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.
Related
Commands
ip source-route
c e s
Enable FTOS to forward IP packets with source route information in the header.
Syntax
ip source-route
To drop packets with source route information, enter no ip route-source.
Defaults
Enabled.
Command Modes
CONFIGURATION
Command
History
Version 8.3.19.0 Introduced on S4820T
Version 8.5.1.0 Added support for 4-port 40G line cards on ExaScale.
Version 8.3.7.0 Introduced on S4810
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
show ip route View the switch routing table.
Version 8.3.19.0 Introduced on S4820T
Version 8.3.7.0 Introduced on S4810
Version 8.1.1.0 Introduced on E-Series ExaScale