Allied Telesis AT-S63 - Manual (Page 93)

AT-S63 Management Software Menus Interface User’s Guide
Section I: Basic Operations 93
Enhanced
Stacking
Guidelines
Here are the main guidelines to using the enhanced stacking feature:
ˆ There can be up to 24 switches in a enhanced stack.
ˆ The switches in an enhanced stack must be interconnected by a
common subnet and port-based or tagged VLAN. The VLAN must
have the same name and VLAN identifier (VID) on each switch, and
the switch must be interconnected using tagged or untagged ports of
the VLAN.
ˆ You must designate the interface of the common subnet as the local
interface on the master switch.
ˆ You can create different stacks by interconnecting different groups of
switches with different common VLANs and subnets.
ˆ An enhanced stack must have at least one master switch. You
designate the master by changing its stacking status of Master.
ˆ An enhanced stack can consist of any Allied Telesyn switch that
supports this feature, including the AT-8000 Series, AT-8400 Series,
AT-8500 Series, and AT-9400 Series switches. For more information,
refer to “Enhanced Stacking Compatibility” on page 92.
ˆ In order to manage the stack remotely using a Telnet or SSH client or a
web browser, the remote management workstation must be able to
reach the master switch through the subnet of switch’s local interface.
ˆ The IP address 172.16.16.16 is reserved for the enhanced stacking
feature and must not be assigned to any device on your subnet.
General Steps
Here are the basic steps to implementing the enhanced stacking feature
on the AT-9400 Series switches in your network:
1. Select a switch to act as the master switch of the enhanced stack. This
can be any Allied Telesyn switch that supports this feature. In a stack
with different switch models, Allied Telesyn recommends using an
AT-9400 Series as the master switch. For further information, refer to
“Enhanced Stacking Compatibility” on page 92.
2. On the switch chosen to be the master switch, change its stacking
status to Master. For instructions, refer to “Setting a Switch’s
Enhanced Stacking Status” on page 95.
3. On each switch in the enhanced stack, create a common port-based or
tagged VLAN and interconnect the devices using twisted pair or fiber
optic ports of the VLAN. As mentioned earlier, the slaves switches do
not have to be directly connected to a master switch. They can be
indirectly connected through other switches, so long as there is an
uninterrupted path (no routers or VLAN boundaries) of the common
VLAN from a switch to a master switch. For instructions on how to
create a VLAN, refer to Chapter 24, “Port-based and Tagged VLANs”
on page 589. (You can use the Default_VLAN as the common VLAN.)