13
•
If the switch modules have internal crosslinks, use the crosslink ports on the rear panel as a
best practice. These ports are invisible to users and do not require physical cabling.
The HP 6127XLG or HP 6127XLG TAA switch module has four crosslink ports, which are
numbered 17, 18, 19, and 20. By default, the four ports are shut down to avoid loops.
The crosslink ports used as IRF physical interfaces on neighboring members must have the
same interface number.
•
If the switch modules do not have internal crosslinks, you must use the SFP+ or QSFP+ uplink
ports on the front panel.
To identify internal crosslinks between switch modules in a chassis, see the enclosure setup and
installation guide.
Selecting transceiver modules and cables
When you select transceiver modules and cables, follow these restrictions and guidelines:
•
Use SFP+ or QSFP+ DAC cables to connect SFP+ or QSFP+ ports in a short distance.
•
Use SFP+ or QSFP+ transceiver modules and fibers to connect SFP+ or QSFP+ ports in a long
distance.
•
The transceiver modules at the two ends of an IRF link must be the same type.
For more information about the SFP+ and QSFP+ transceiver modules, see the switch installation
guide and
HPE Comware-Based Devices Transceiver Modules User Guide
.
NOTE:
The modules and DAC cables available for IRF links are subject to change over time. For the most
up-to-date list of modules and DAC cables for IRF links, contact your Hewlett Packard Enterprise
sales representative.
Connecting IRF ports
When you connect two neighboring IRF members, connect the physical interfaces of IRF-port 1 on
one member to the physical interfaces of IRF-port 2 on the other.
Feature compatibility and configuration restrictions
Make sure the feature settings in
are the same across member devices.
Table 2 IRF and feature compatibility
Feature
Command
Remarks
Enhanced ECMP mode
ecmp mode enhanced
See
Layer 3—IP Routing Configuration
Guide
.
Maximum number of ECMP
routes
max-ecmp-num
See
Layer 3—IP Routing Configuration
Guide
.
Table capacity mode
switch-mode
See
Fundamentals Configuration Guide
.
Support for the IPv6 routes
with prefixes longer than 64
bits
switch-routing-mode
ipv6-128
See
Layer 3—IP Routing Configuration
Guide
.
System operating mode
system-working-mode
See
Fundamentals Configuration Guide
.
