Xem2 Line Cards; Table 27: Maximum Number Of Trunk Ports Per Switch - Allied Telesis x950 Series Installation Manual

Chapter 3: Virtual Chassis Stacking
XEM2 Line
Cards
82
Here are the guidelines for using ports on XEM2 Line Cards in the
expansion slots for trunks:
Note
The x950-52XSQ switch does not support XEM2 line cards.
Stacks can have up to four switches.

Stacks can have both x950-28XSQ and x950-28XTQm Switches.

The maximum number of links in the trunk varies by line card.

Refer to Table 27. For example, a trunk using XEM2-12XT or
XEM2-12XS Line Cards can have up to eight ports per card.
Table 27. Maximum Number of Trunk Ports Per Switch
Ethernet Line Card
XEM2-8XSTm
XEM2-12XT
XEM2-12XTm
XEM2-12XS and
XEM2-12XS v2
XEM2-4QS
XEM2-1CQ
The guidelines are listed here:
1. Trunks of twisted pair ports on XEM2-8XSTm, XEM2-12XT, or
XEM2-12XTm Line Cards have to operate at 10Gbps. They cannot
be used as trunk ports at lower speeds.
2. Trunks of SFP+ ports on XEM2-8XSTm, XEM2-12XS, or XEM2-
12XS v2 Line Cards have to use 10Gbps SFP+ transceivers. They
cannot be used as trunk ports at lower speeds.
3. Allied Telesis does not recommend using the XEM2-1CQ Line Card
for a stack trunk.
Figure 33 on page 83 is an example of a stack of two switches with

a trunk of six 10Gbps links on XEM2-12XT Line Cards.
Maximum Number of
Trunk Ports Per Switch
4
8
8
8
4
1
Guidelines
1, 2
1
1
2
3