Extreme Networks ExtremeSwitching X440-G2 Series, Hardware Installation Manual

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Table 74: Stacking Methods for X770 Switches
Stacking Method Speed per Link (HDX) Cable Type and Lengths
SummitStack-V (ports 103 and 104) 10 Gbps 1m and 2m QSFP+ 4xSFP+
fan-out cable
SummitStack-V160 (ports 103 and 104) 40 Gbps 0.5m, 1m, and 3m (26
AWG) QSFP+
SummitStack-V320 (ports 101 and 103, and 102 and 104) 80 Gbps (combined over
paired ports) 0.5m, 1m, and 3m (26
AWG) QSFP+
Native Stacking for X770 Switches
The X770 supports SummitStack-V80, V160, and V320 stacking. Use any Extreme Networks certified
40G QSFP+ cable or optical transceiver to make the connections among the switches to be stacked.
For X770 native stacking, use the fixed 40G QSFP+ ports numbered 101, 102, 103, and 104 (shown in
Figure 123 ).
Figure 123: Location of Stacking Ports (101 through 104) on an X770 Switch
For a complete listing of compatible cables and optical transceivers, see the Extreme Hardware/
Software Compatibility and Recommendation Matrices .
Alternate Stacking for X770 Switches
Table 75 summarizes alternate stacking support for X770 switches.
Table 75: Alternate Stacking Ports for X770 Switches
Switch Model Type or location of Native
Stacking Ports Alternate Stacking
Ports Location of Alternate
Stacking Ports
X770-32q Ports 101,102,103,104 103,104 Front panel
Note
Ports 103 and 104 are not available as data ports when the alternate stacking ports are used.
Ports 101 and 102 remain available to use as data ports.
Additional Stacking Considerations for X770 Switches
Before deploying a new stack with Summit X770 switches, consider the following guidelines:
•
To use the failover feature in the stack, a second Summit X770 switch is recommended. It must be
the backup node.
•
Only the master and master-capable nodes require a license to support special features such as
MPLS (Multiprotocol Label Switching).
Building Stacks
ExtremeSwitching and Summit Switches: Hardware Installation Guide 161