Forcing an Interface to Appear Up

The router enables you to force an IP interface to appear as if it is up, regardless of the state of the lower layers.

ip alwaysup

• Use to force an IP interface to appear as up regardless of the state of lower layers.
• This command reduces route topology changes when the network attached to this link is single-homed.
• Example

  host1(config-if)#ip alwaysup

• Use the no version to make the interface appear in the current state.
• See ip alwaysup

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