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JunosE 11.3.x IP, IPv6, and IGP Configuration Guide
Forcing an Interface to Appear Up
ip alwaysup
Specifying a Debounce Time
ip debounce-time
Adding a Description
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Use the no version to disable forwarding of source-routed packets on the VR or VRF.
See ip source-route
The router enables you to force an IP interface to appear as if it is up, regardless of the
state of the lower layers.
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
You can set a debounce time that requires an IP interface to be in a given state—for
example, up or down—for the specified time before the state is reported. This feature
prevents a link that briefly goes up or down from causing an unnecessary topology change,
for example by causing an interface down condition. However, note that increasing the
debounce time increases the latency of updating the routing table to reflect an up or
down change, and the latency of routing protocols propagating the state change.
Use to set the interval in milliseconds for which an interface must maintain a given
state before the state change is reported.
Example
host1(config)#ip debounce-time 5000
Use the no version to remove the debounce time requirement.
See ip debounce-time
The router enables you to add a text description or an alias to a static IP interface or
subinterface. Adding a description helps you identify the interface and keep track of
interface connections. If no IP interface currently exists, then a static IP interface is
automatically created on the current layer 2 interface and the description is applied to
that static IP interface. You cannot assign a profile to a layer 2 interface that has a static
interface configured above it.
Copyright © 2010, Juniper Networks, Inc.
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