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Dell Configuration Guide for the S4048–ON System 9.14.2.4

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Configuring Static Routes

A static route is an IP address that you manually configure and that the routing protocol does not learn, such as open shortest path first (OSPF). Often, static routes are used as backup routes in case other dynamically learned routes are unreachable.

You can enter as many static IP addresses as necessary.

To configure a static route, use the following command.

Configure a static IP address.
CONFIGURATION mode
ip route [vrf vrf-name] ip-address mask {ip-address | interface [ip-address]} [distance] [name description] [permanent] [tag tag-value] [vrf vrf-name]
Use the following required and optional parameters:

  • vrf vrf-name : use the VRF option after the ip route keyword to configure a static route on that particular VRF, use the VRF option after the next hop to specify which VRF the next hop belongs to. This will be used in route leaking cases.

    NOTE For more information on route leaking, see the Route Leaking Between VRFs section.

  • ip-address: enter an address in dotted decimal format (A.B.C.D).

  • mask: enter a mask in slash prefix-length format (/X).

  • interface: enter an interface type then the slot/port information.

  • distance: the range is from 1 to 255. (optional)

  • name: enter the keyword name and the description of the IPv4 static route configuration. (optional)

  • permanent: keep the static route in the routing table (if you use the interface option) even if you disable the interface with the route. (optional)

  • tag tag-value: the range is from 1 to 4294967295. (optional)

Example of the show ip route static Command

To view the configured routes, use the show ip route static command.
DellEMC#show ip route static
  Destination  Gateway                Dist/Metric Last Change
-----------    -------                ----------- -----------
S 2.1.2.0/24   Direct, Nu 0              0/0      00:02:30
S 6.1.2.0/24   via 6.1.20.2, Te 5/1      1/0      00:02:30
S 6.1.2.2/32   via 6.1.20.2, Te 5/1      1/0      00:02:30
S 6.1.2.3/32   via 6.1.20.2, Te 5/1      1/0      00:02:30
S 6.1.2.4/32   via 6.1.20.2, Te 5/1      1/0      00:02:30
S 6.1.2.5/32   via 6.1.20.2, Te 5/1      1/0      00:02:30
S 6.1.2.6/32   via 6.1.20.2, Te 5/1      1/0      00:02:30
S 6.1.2.7/32   via 6.1.20.2, Te 5/1      1/0      00:02:30
S 6.1.2.8/32   via 6.1.20.2, Te 5/1      1/0      00:02:30
S 6.1.2.9/32   via 6.1.20.2, Te 5/1      1/0      00:02:30
S 6.1.2.10/32  via 6.1.20.2, Te 5/1      1/0      00:02:30
S 6.1.2.11/32  via 6.1.20.2, Te 5/1      1/0      00:02:30
S 6.1.2.12/32  via 6.1.20.2, Te 5/1      1/0      00:02:30
S 6.1.2.13/32  via 6.1.20.2, Te 5/1      1/0      00:02:30
S 6.1.2.14/32  via 6.1.20.2, Te 5/1      1/0      00:02:30
S 6.1.2.15/32  via 6.1.20.2, Te 5/1      1/0      00:02:30
S 6.1.2.16/32  via 6.1.20.2, Te 5/1      1/0      00:02:30
S 6.1.2.17/32  via 6.1.20.2, Te 5/1      1/0      00:02:30
S 11.1.1.0/24  Direct, Nu 0              0/0      00:02:30
Direct, Lo 0
--More--

Dell EMC Networking OS installs a next hop that is on the directly connected subnet of current IP address on the interface.

Dell EMC Networking OS also 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.
  • When the interface goes down, Dell EMC Networking OS withdraws the route.
  • When the interface comes up, Dell EMC Networking OS re-installs the route.
  • When the recursive resolution is “broken,” Dell EMC Networking OS withdraws the route.
  • When the recursive resolution is satisfied, Dell EMC Networking OS re-installs the route.

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