Virtual Link Aggregation Control Protocol

Virtual LACP (VLACP) is an Avaya extension of the Link Aggregation Control Protocol to provide a Layer 2 handshaking protocol which can detect end-to-end failure between two physical Ethernet interfaces. It allows the switch to detect unidirectional or bi-directional link failures irrespective of intermediary devices and enables link recovery in less than one second.

With VLACP, far-end failures can be detected, which allows a Link aggregation trunk to fail over properly when end-to-end connectivity is not guaranteed for certain links through the internet in an aggregation group. When a remote link failure is detected, the change is propagated to the partner port.

External links

Virtual Link Aggregation Control Protocol (VLACP) Retrieved 29 July 2011
ERS-8600 All Documentation -Retrieved 29 July 2011
VSP 7000 Command Line Interface Commands Reference, Command: vlacp Retrieved 1 May 2020

Avaya Inc.

Products

Routers and switches	VSP 9000 series VSP 8000 series VSP 7000 series VSP 4000 series ERS 8800 series ERS 5600 series ERS 5500 series ERS 4000 series ERS 3500 series ERS 2500 series
Security devices	Secure Router 4134 Secure Network Access (NAC) VPN router
IP telephones	Avaya 1100-series IP phones 1140E 1120E 1120SA Avaya 9600-series IP Deskphones
Protocols	Auto Detection Auto Configuration FAST Stacking Nortel Discovery Protocol Simple Loop Prevention Protocol MLT DMLT SMLT DSMLT RSMLT IST PBT IP-VPN Lite VLACP UNIStim
Servers	AS5300 CS2100 CS1000E CS1000M
Software and systems	Agile Communication Environment Communications Manager Unified Communications Management Enterprise Switch Manager Proactive Voice Quality Management Scopia