Alcatel-Lucent 7750 SR OS Interface Configuration Manual page 335

Default
null
Parameters dot1q — Ingress frames carry 802.1Q tags where each tag signifies a different service.
null — Ingress frames will not use any tags to delineate a service. As a result, only one service can be
qinq — Specifies QinQ encapsulation.
hold-time
Syntax hold-time {[up hold-time up] [down hold-time down] [seconds | centiseconds]}
no hold-time
Context config>port>ethernet
Description
This command configures port link dampening timers which reduce the number of link transitions
reported to upper layer protocols. The hold-time value is used to dampen interface transitions.
When an interface transitions from an up state to a down state, it is immediately advertised to the rest
of the system if the hold-time down interval is zero, but if the hold-time down interval is greater than
zero, interface down transitions are not advertised to upper layers until the hold-time down interval
has expired. Likewise, an interface is immediately advertised as up to the rest of the system if the
hold-time up interval is zero, but if the hold-time up interval is greater than zero, up transitions are not
advertised until the hold-time up interval has expired.
The no form of this command reverts to the default values.
Default
down 0 seconds — No port link down dampening is enabled; link down transitions are immediately
reported to upper layer protocols.
up 0 seconds — No port link up dampening is enabled; link up transitions are immediately reported
to upper layer protocols.
Parameters up hold-time up — — The delay, in seconds or centiseconds, to notify the upper layers after an
down hold-time down — The delay, in seconds or centiseconds, to notify the upper layers after an
seconds | centiseconds — Specify the units of your hold time in seconds or centiseconds.
Note: The centisecond option is not available on the 7750 SR-1 chassis.
7750 SR OS Interface Configuration Guide
configured on a port with a null encapsulation type.
interface transitions from a down state to an up state.
Values 0 — 900 seconds
0, 10 — 90000 centiseconds in 5 centisecond increments
interface transitions from an up state to a down state.
Values
0 — 900 seconds
0, 10 — 90000 centiseconds in 5 centisecond increments
Interface Configuration
Page 335