Juniper JUNOSE 11.0.X PHYSICAL LAYER Configuration Manual page 222

JUNOSe 11.0.x Physical Layer Configuration Guide
debounce-interval
NOTE: Debounce configuration is supported for all Ethernet module combinations
on E Series routers.
200
Configuring the Physical Interface
Specify the interval, in seconds, for which an interface must maintain a given
state before the state change is reported to the upper-layer links. The range is
1–5 seconds and the default interval is 1 second.
Observe the following guidelines when you configure the debounce feature for
Ethernet interfaces:
In networks where a link alternates between the up and down state for brief
periods, we recommend that you set a longer debounce interval to prevent
the router from prematurely and unnecessarily tearing down and rebuilding
the PPPoE connections during brief network outages.
In networks where the interface changes to a down state and remains in the
down state for long periods of time, we recommend that you set a shorter
debounce interval to minimize the latency (delay) required for the interface
to notify the upper-layer protocols of the state change. When you set a longer
debounce interval, the latency increases.
We recommend that you disable the debounce feature in networks that
require faster link status notifications to upper links.
The debounce feature is not supported for Ethernet interfaces on which
either IEEE 802.3ad link aggregation is configured.
The setting of the debounce command persists after you reboot the router.
Example
host1(config-if)#debounce 3
Use the no version to restore the default behavior, which disables debounce on
the interface.
See debounce.
Use to modify the minimum time an Ethernet interface must maintain a given
state for example, up or down before the interface notifies the upper-layer
protocols of the state change. The interval can be in the range 1–5 seconds.
You can configure this command only if you have enabled the debounce timer
feature using the debounce command. After you enable this feature, you can
use the debounce-interval command to modify the debounce interval.
The setting of the debounce-interval command persists after you reboot the
router.
Example
host1(config-if)#debounce—interval 4