Using Summitstack-V320 Stacking - Extreme Networks Summit X150 Series Hardware Installation Manual

Chapter 5: Building a SummitStack Configuration

Using SummitStack-V320 Stacking

A stacking rate of 320 Gbps can be achieved across a stack of Summit X480 (with VIM3-40G4X), X650
(with VIM3-40G4X), and X670 (with VIM4-40G4X) switches using the QSFP+ connection and cables.
These Summit switches can use 80-Gbps stacking connections that provide 320 Gbps full duplex
bandwidth.
Figure 136 shows an example of a SummitStack-V320 stack using Summit X670 and X650 series
switches.
Figure 136: Example SummitStack-V320 Configuration
1 2 3 4
1 2 3 4
Paired Ports
1 3
2 4
For SummitStack V-320 Stacking using the VIM3-40G4X and VIM4-40G4X modules, connections
between the stacking ports must be done using paired bundles of physical ports. V320 stacking will not
function unless the physical ports on the modules are paired to form stacking ports.
port pairings.
Table 68: Physical Port pairing to Form Stacking Ports
VIM3-40G4X
Paired
physical ports
S1 and S3
S2 and S4
Table 69 lists the ecommended order for connecting the stacking ports in the example stack shown in
Figure 136.
Table 69: Recommended Order for Stacking Connections (three-switch stack)
Connect this slot and port . . .
Slot 1 Stack Port 2
(physical ports 2
and 4)
Slot 2 Stack Port 2
(physical ports 2
and 4)
Slot 3 Stack Port 2
(physical ports 2
and 4)
194
Paired Ports
Paired Ports
Stacking port
physical ports
S1 S1 and S3
S2 S2 and S4
. . . To this slot and port
Slot 2 Stack Port 1
(physical ports
1and 3)
Slot 3 Stack Port 1
(physical ports 1
and 3)
Slot 1 Stack Port 1
(physical ports 1
and 3)
Slot 1: Summit X670V-48x switch
with VIM4-40G4X
Slot 2: Summit X670V-48x switch with
VIM4-40G4X
Slot 3: Summit X650 series switch with
VIM3-40G4X
VIM4-40G4X
Paired Stacking port
S1
S2
Summit Family Switches Hardware Installation Guide
Table 68 lists the