Allied Telesis AT-x550-18XSPQm, Installation Manual

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x550 Series Installation Guide for Virtual Chassis Stacking
61
10Gbps Stack
Trunks
You can also build stack trunks with 10Gbps twisted pair ports or SFP+
transceiver slots on the switches. The guidelines are described here:
 Stacks with 10Gbps trunks can have two, three, or four switches.
 The 10Gbps stacking ports are listed in Table 18.

As shown in the table, the AT-x550-18XTQ and AT-x550-18XSQ
Switches have one set each of 10Gbps stacking ports, 15/S1 and
16/S2. The stacking pair on the AT-x550-18XTQ Switch consists of
10Gbps twisted pair ports while the pair on the AT-x550-18XSQ
has SFP+ transceiver slots.

The AT-x550-18XSPQm Switch has two 10Gbps stacking pairs.
Pair 7/S1 and 8/S2 are twisted pair ports and 15/S3 and 16/S4 are
SFP+ transceiver slots. You can use either pair to build a 10Gbps
trunk for the switches of a stack.
 SFP+ transceivers must be from Allied Telesis and be approved for
use in the product. For a list of supported 10Gbps SFP+
transceivers, refer to the product data sheet on the Allied Telesis
web site:
Note
Transceivers are purchased separately.
 The 10Gbps stacking ports and transceiver slots can be used as
regular networking ports by disabling the stacking feature or using
the 40Gbps transceiver slots as the stacking trunk.
 A stack trunk can be either linear or ring. Ring is recommended
because it adds redundancy. The stack can continue to function
even if a trunk link fails. The following examples show the ring
configuration only.
Table 18. 10Gbps Stacking Ports and Transceiver Slots
Model
1/2.5/5/10
Gbps PoE+
Twisted Pair
Ports
1Gbps and
10Gbps
Twisted Pair
Ports
1Gbps SFP
and 10Gbps
SFP+
Transceiver
Slots
AT-x550-18XTQ 15/S1, 16/S2
AT-x550-18XSQ 15/S1, 16/S2
AT-x550-18XSPQm 7/S1, 8/S2 15/S3, 16/S4