Installation Guide

Additional Stacking Considerations for X460-G2 Switches
When planning to use X460-G2 switches in a stack, note the following additional considerations:
•
When using the VIM-2ss module, you can enable stacking without enabling stacking-support
because the ports are native to the switch. All other VIMs require stacking-support to be enabled.
•
The X460-G2 switch has “protocol enhanced” set by default. (Older switches, such as the X460,
have “protocol standard” set by default. When you add a switch to a stack, make sure the new
switch has "protocol enhanced" set so that it can communicate with the X460-G2 switch and the
other switches in the stack.)
•
See also Summit X460-G2 (10G Models) Stack Configuration Guidelines on page 156.
•
See also Summit X460-G2 (1G Models Using VIM Ports) Stack Configuration Guidelines on page 157.
Summit X460-G2 (10G Models) Stack Configuration Guidelines
Before deploying a new stack with Summit X460-G2 10-gigabit switch models (10GE4), consider the
following guidelines:
•
In a stack that contains X460-G2 switches and other switch models, the X460-G2 switch might
provide more memory and more features than the other switch models. Take this into account when
you decide which switches will serve as the master and backup nodes, and when you configure
failover operation.
•
To use the failover feature in the stack, a second Summit X460-G2 switch is recommended. It must
be the backup node.
•
X460-G2 (10GE4) switches support SummitStack-V stacking on front panel 10G SFP+ ports, as well
as native stacking through an attached VIM-2q or VIM-2ss module.
•
Only the master and master-capable nodes require a license to support special features such as
MPLS (Multiprotocol Label Switching).
•
If the MPLS feature pack is installed on the master-capable nodes, the following guidelines apply:
•
Every switch in the stack must meet the software and hardware requirements listed in the
Feature License Requirements document.
•
Only the enhanced stacking protocol is supported for the X460-G2 switch. Every node that
shares a stack with an X460-G2 switch must have enhanced stacking configured.
•
We recommend against mixing X450-G2, X460-G2, X770, and X670-G2 switches in a stack.
•
Summit X460-G2 switches support multiple types of QSFP+ stacking cables for connection
between VIM-2q ports and QSFP+ ports on other Summit switches. For information on which
cables to use with each type of Summit family switch, see Selecting Stacking Cables on page
166.
•
The last two front panel 10G ports are used for alternate stacking (SummitStack-V feature).
•
VIM-2q ports are used for SummitStack-V160G stacking.
•
VIM-2t ports are not used for stacking. These ports are used for user data.
•
A VIM-2q module attached to an X460-G2 switch supports LR4 PSM in 40G mode.
•
The X460-G2 switch supports the LR4 Parallel Single Mode (PSM) optical transceiver on 40G
optical QSFP+ ports.
•
The LR4 PSM is supported on the following platforms: X440-G2, X450-G2, X460-G2, X620,
X770, X670-G2.
Building Stacks
ExtremeSwitching and Summit Switches: Hardware Installation Guide 156