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
5-3
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
OL-9285-05
Chapter 5 Troubleshooting Mixed Generation Hardware
Overview
Note
Port groups are defined by the hardware and consist of sequential ports. For example, ports 1 through
12, ports 13 through 24, ports 25 through 36, and ports 37 through 48 are the port groups on the 48-port
4-Gbps Fibre Channel switching modules.
Port Speed Mode
Table 5-3
shows the port speeds allowed on each Generation 2 switching module.
Dynamic Bandwidth Management
Table 5-4
shows the bandwidth reserved based on port speed for ports in dedicated mode.
Table 5-5
shows the bandwidth reserved based on port speed for ports in shared mode.
DS-C9124
24-port 4 Gbps
6
12.8
4-Gbps
DS-C9222i-K9
18-port 4-Gbps
6
12.8
4-Gbps
1.
Dedicated bandwidth with no oversubscription
2.
Dedicated bandwidth or oversubscribed using shared buffer resources.
Table 5-2
Bandwidth and Port Groups for Generation 2 Modules (continued)
Module or Switch
Description
Number of
Ports Per
Port Group
Bandwidth Per Port
Group
Maximum
Bandwidth Per
Port
Table 5-3
Configurable Port Speeds on Generation 2 Switching Modules
Module
Port Speed Modes
Default Configuration
48-port 4-Gbps Auto, auto (max 2 Gbps), 1, 2, 4
Auto, shared
24-port 4-Gbps Auto, auto max 2000 (2 Gbps), 1, 2, 4
Auto, shared
12-port 4-Gbps Auto, auto max 2000 (2 Gbps), 1, 2, 4
Auto, dedicated
4-port 10-Gbps Auto
1
1.
4-port 10-Gbps can be configured as auto mode, but only supports 10-Gbps connections.
Auto, dedicated
Table 5-4
Bandwidth Reserved for Dedicated Mode
Port Speed
Bandwidth Reserved per Port
Auto / 4 Gbps
4 Gbps
Auto max 2000 / 2 Gbps
2 Gbps
1 Gbps
1 Gbps
10
1
1.
Available only on the 4-port 10-Gbps switching module.
10 Gbps
