Each switch model can use various methods of stacking.
SummitStacking by Stacking Method shows the switch models that can participate in each stacking method.
| Stacking Method | Speed per Link (HDX) | Cable Type and Lengths | Switch Models |
|---|---|---|---|
| SummitStack-V | 10 Gbps | 0.5 m - 40 km SFP+ (with SR, LR, and ER) |
5520 (using 5520-VIM-4X)
Note: The 5520
switches can stack with 5320 switches or 5420 switches by
installing a 5520-VIM-4X into the 5520 switches.
|
| SummitStack-V40 | 10 Gbps | 0.5 m - 40 km SFP+ (with SR, LR, and ER) |
4220 (ports U1, U2)
Note: The 4220 switches can only
stack with themselves.
5320
Note: The 5320
switches can stack with themselves, the 5420 or 5520
switches using 5520-VIM-4X ports.
5320-24T-4X-XT and 5320- 24T-24S-4XE-XT (ports U1,
U2)
Note: 5320-24T-4X-XT and 5320- 24T-24S-4XE-XT switches
can only stack with themselves.
Note: 5320-16P-2MXT-2X can stack with other 5320 switches except 5320-24T-4X-XT and 5320-24T-24S-4XE-XT switches.
5420 (ports U1, U2)
Note: The 5420 switches can stack with themselves, 5320 switches,
or 5520 switches using 5520-VIM-4X ports.
|
| SummitStack-V80 | 20 Gbps | 0.5 m - 5 m SFP-DD | 5420 (ports U1,
U2) Note: The 5420 switches
can stack with themselves and 5520 (ports
U1 and U2) when configured for SummitStack-V80.
|
| SummitStack-V100 | 25 Gbps | 0.5 m - 40 m SFP28 only (with SR, LR, and ER) | 5120 (ports U1, U2) Note: The 5120 switches can only
stack with themselves.
|
| SummitStack-V160 | 40 Gbps | 0.5 m - 40 kM QSFP+ only |
5520 (ports U1, U2)
Note: If
you use SummitStack-V160, 5520 switches can stack only with
themselves. To stack with 5320 and 5420 switches, the 5520
can use either SummitStack-V80 on ports U1 and U2 or
SummitStack-V on the alternate stack ports (Using a
5520-VIM-4X).
|
| SummitStack-V200 | 50 Gbps | 0.5 m - 5 m QSFP28 only |
4120 (ports U1, U2)
Note: The 4120 switches can only
stack with themselves.
5120-44X-4Y-2C (ports 49, 50)
Note: The 5120 switches can only
stack with themselves.
5520 (ports U1, U2)
Note: If you use
SummitStack-V200, 5520 switches can stack only with
themselves or 5720 switches.
|
| SummitStack-V400 | 106 Gbps | 0.5 m - 5 m QSFP28 only | 5720 (ports U1,
U2), Extreme 7520 (ports 53/54 or 55/56), or 7720 (ports 31,
32) Note: If you
use SummitStack-V400, 5720 switches can only stack with
themselves.
Note: No VIM ports can
be configured as stack ports for 5720 switches.
Note: If
you use SummitStack-V400, 7520 and 7720 switches can only stack
with themselves.
|
| SummitStack-V400 Alternative Configuration | 100 Gbps | V400 Alternative Configuration is required when using
specific fiber cables. This mode sets the stack ports to 100G,
enables pre-emphasis, and FEC (clause_91).
| 5720 (ports U1,
U2), Extreme 7520 (ports 53/54 or 55/56), or 7720 (ports 31,
32) Note: If you
use SummitStack-V400 Alternative Configuration, 5720 switches
can only stack with themselves.
Note: No VIM ports can
be configured as stack ports for 5720 switches.
Note: If you use
SummitStack-V400 Alternative Configuration, 7520 and 7720
switches can only stack with themselves.
|
For more details about the stacking methods that are available for each switch series, see the hardware installation guide for your switch.
Note
All switches in the stack must run the same version of Switch Engine.