C H A P T E R 23 Configuring Portchannels; Portchannel Examples; Port Switching Module Configuration Guidelines - HP Cisco MDS 9216 - Fabric Switch Configuration Manual

About PortChannels
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
Cisco MDS 9000 Family switches with Generation 1 switching modules, or a combination of Generation
1 and Generation 2 switching modules, support a maximum of 128 PortChannels. Switches with only a
Generation 2 switching module support a maximum of 256 PortChannels (with 16 interfaces per
PortChannel). A PortChannel number refers to the unique (to each switch) identifier associated with
each channel group. This number ranges from of 1 to 256.
This section describes PortChannels and contains the following topics:
•
•
•
•

PortChannel Examples

PortChannels on Cisco MDS 9000 Family switches allow flexibility in configuration.
illustrates three possible PortChannel configurations:
•
•
•
Figure 23-1

32-Port Switching Module Configuration Guidelines

The 32-port switching module guidelines apply to the following hardware:
•
•
When configuring these host-optimized ports, the following PortChannel guidelines apply:
Cisco MDS 9000 Family CLI Configuration Guide
23-2
PortChannel Examples, page 23-2
32-Port Switching Module Configuration Guidelines, page 23-2
About PortChanneling and Trunking, page 23-3
About Load Balancing, page 23-4
PortChannel A aggregates two links on two interfaces on the same switching module at each end of
a connection.
PortChannel B also aggregates two links, but each link is connected to a different switching module.
If the switching module goes down, traffic is not affected.
PortChannel C aggregates three links. Two links are on the same switching module at each end,
while one is connected to a different switching module on switch 2.
PortChannel Flexibility
Switch 1
32-port 2-Gbps or 1-Gbps switching modules
Cisco MDS 9140 switches
PortChannel A
PortChannel B
PortChannel C
Chapter 23 Configuring PortChannels
Figure 23-1
Switch 2
OL-16184-01, Cisco MDS SAN-OS Release 3.x