Allied Telesis AT-FAN06 Manuale Utente

AT-DC2552XS

 | High Performance, Low Latency Top-of-Rack Data Center Switch

2 | AT-DC2552XS 

Resilient Ethernet Fabric (REF)

1

 increases availability 

using a dedicated bypass link. If one of the links or units 

fails, the bypass link restores connectivity. By setting 

up the same LACP trunk group over two AT-DC2552XS 

units, REF uses link aggregation to increase throughput 

beyond what a single connection could sustain, while 

providing link path redundancy. 

 

» Master-less

 

» Layer 2 mesh on spine-leaf model 

 

» Active-active, multi-path 

 

» Easy setup

 

» There is no “synchronize” process which the hardware 

stacking feature usually requires. Instead of setting up 

“masters” and “members,” REF recognizes the other 

device just as a partner and eliminates the downtime 

of master fail-over. 

 

» One pair of AT-DC2552XS switches with aggregation 

mode supports up to five pair of AT-DC2552XS with 

ToR mode, which would connect a maximum of 40 

servers per rack. 

 

» While Spanning Tree Protocol requires active-standby 

configuration and switchover time for failure, REF 

supports active-active configuration, preventing any 

perceptible disruption in the case of a link failure. 

Even if one of the devices fails, an alternative path 

is secured and ensures absolute minimal network 

downtime. 

 

» REF is configured with QSFP modules between two 

AT-DC2552XS units, and breakout cables between 

the ToR and the aggregation switch.

Resilient Ethernet Fabric

1

  Requires updating to controlled introduction software version 2.5.3.1. 

Contact your local Allied Telesis support staff for details.