Alcatel-Lucent 7710 SR SONET, Configuration Manual

Page: 97 / 496

Interface Configuration
7710 SR OS Interface Configuration Guide Page 97
Port Link Damping
Hold time controls enable port link damping timers that reduce the number of link transitions
reported to upper layer protocols.
The 7710 SR OS port link damping feature guards against excessive port transitions. Any initial
port transition is immediately advertised to upper layer protocols, but any subsequent port
transitions are not advertised to upper layer protocols until a configured timer has expired.
An “up” timer controls the dampening timer for link up transitions, and a “down” timer controls
the dampening timer for link down transitions.
LACP
Generally, link aggregation is used for two purposes: provide an increase in bandwidth and/or
provide redundancy. Both aspects are addressed by aggregating several Ethernet links in a single
LAG.
LACP enhancements allow active lag-member selection based on particular constrains. The
mechanism is based on the IEEE 802.3ax standard so interoperability is ensured.