Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 2118)

VCStack Introduction
Software Reference for x310 Series Switches
82.4 AlliedWare Plus TM Operating System - Version 5.4.4C C613-50046-01 REV A
Figure 82-2: Back-to-Back Topology
Resiliency link
The resiliency link carries no network data. Its function is to provide additional stack status
information to enable the stack members to more accurately decide whether it is
appropriate for one of them to take over the role of stack master if the existing master fails.
See
“Stack Resiliency Link” on page 82.12 .
Resiliency link configurations via switch ports
Two resiliency-link configurations that use switch ports are shown below. The first figure
shows the resiliency link connecting in a ring topology, whilst the second figure shows the
resiliency link connecting to the switch ports via a network hub. In both configurations,
the resiliency link connections are made using a designated VLAN running over switch-
port connections between each stack member. For more information on using the
resiliency link commands see the
stack resiliencylink command on page 83.24 and the
switchport resiliencylink command on page 83.30 .
Figure 82-3: Resiliency link connecting to switch ports over the ResiliencyLink VLAN
x510_Back-to-BackStack .eps
CLASS 1 LASER PRODUCT
CONSOLE
S1/51
S2/52
49 SFP+
50
x510-52GTX
3 5 1 7 9
4 6 8 10 2
CLASS 1 LASER PRODUCT
CONSOLE
S1/51
S2/52
49 SFP+
50
x510-52GTX
3 5 1 7 9
4 6 8 10 2
Stacking
Ports
Resiliency
Link High Speed
Stacking Links
ResiliencyLink_Ring-x310.eps
x310 Series
Stacking Links
Connecting to Switch Ports Stack Resiliency Link -
ResiliencyLink VLAN
x310 Series
x310 Series
x310 Series