Chapter 3: Virtual Chassis Stacking
82
XEM2 Line
Cards
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.
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.
Table 27. Maximum Number of Trunk Ports Per Switch
Ethernet Line Card
Maximum Number of
Trunk Ports Per Switch
Guidelines
XEM2-8XSTm
4
1, 2
XEM2-12XT
8
1
XEM2-12XTm
8
1
XEM2-12XS and
XEM2-12XS v2
8
2
XEM2-4QS
4
XEM2-1CQ
1
3
Summary of Contents for x950 Series
Page 12: ...Figures 12 ...
Page 18: ...Preface 18 ...
Page 50: ...Chapter 1 Overview 50 ...
Page 70: ...Chapter 2 XEM2 Ethernet Line Cards 70 ...
Page 134: ...Chapter 5 Installing Power Supplies and Optional XEM2 Line Card 134 ...
Page 146: ...Chapter 7 Installing the Switch in an Equipment Rack 146 ...
Page 162: ...Chapter 8 Installing the Switch on a Wall 162 ...
Page 224: ...Chapter 12 Powering On and Verifying the Stack 224 ...
Page 256: ...Chapter 14 Replacing Modules 256 ...