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Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
OL-29284-01, Release 6.x
Chapter 3 Configuring Fibre Channel Interfaces
Configuring Fibre Channel Interfaces
Use the show port-resources module command to verify the out-of-service configuration for interfaces
on a Generation 2 and Generation 3 switching module.
This example shows a 24-port 4-Gbps module:
switch# show port-resources module 9
Module 9
Available dedicated buffers are 5429
Port-Group 1
Total bandwidth is 12.8 Gbps
Total shared bandwidth is 12.8 Gbps
Allocated dedicated bandwidth is 0.0 Gbps
--------------------------------------------------------------------
Interfaces in the Port-Group B2B Credit Bandwidth Rate Mode
Buffers (Gbps)
--------------------------------------------------------------------
fc9/1 16 4.0 shared
fc9/2 (out-of-service)
fc9/3 16 4.0 shared
fc9/4 16 4.0 shared
fc9/5 16 4.0 shared
fc9/6 16 4.0 shared
...
Releasing Shared Resources in a Port Group
When you want to reconfigure the interfaces in a port group on a Generation 2 or Generation 3 module,
you can return the port group to the default configuration to avoid problems with allocating shared
resources.
Restrictions
• The interface cannot be a member of a PortChannel.
• Releasing shared resources disrupts traffic on the port. Traffic on other ports in the port group is not
affected.
Step 3
switch(config-if)# no channel-group
Removes the interface from a PortChannel.
Step 4
switch(config-if)# shutdown
Disables the interface.
Step 5
switch(config-if)# out-of-service
Putting an interface into out-of-service will
cause its shared resource configuration to
revert to default
Do you wish to continue (y/n)? [n] y
Takes the interface out of service.
Command Purpose
- Configuration Guide 1
- CONTENTS 3
- Contents 10
- OL-29284-01, Release 6.x 10
- New and Changed Information 13
- OL-29284-01 14
- Audience 15
- Organization 15
- Document Conventions 16
- Related Documentation 17
- Command-Line Interface 18
- Interfaces Overview 19
- Extended Credits 20
- FlexAttach 20
- Configuring Interfaces 23
- Interface Description 24
- Interface Modes 24
- Information About Interfaces 26
- Interface States 28
- • Configuration failure 30
- Graceful Shutdown 31
- Port Administrative Speeds 32
- Frame Encapsulation 32
- Beacon LEDs 33
- Speed LEDs 33
- Bit Error Thresholds 33
- SFP Transmitter Types 34
- TL Ports 35
- TL Port ALPA Caches 36
- Port Guard 36
- Port Monitor 37
- Port Monitor Port Guard 38
- Port Group Monitor 38
- Local Switching 38
- Management Interfaces 39
- Prerequisites for Interfaces 40
- Configuring Interface Modes 44
- Configuring 10-Gbps FC Mode 46
- Configuring Port Speed Group 48
- Specifying a Port Owner 49
- Configuring Beacon Mode 49
- Disabling Bit Error Threshold 50
- Configuring TL Ports 51
- Clearing the ALPA Cache 51
- Configuring Port Guard 52
- Configuring Port Monitor 53
- Enabling Port Group Monitor 57
- Creating VSAN Interfaces 60
- Command is Executed 71
- Mode F Command is Executed 72
- Configured for Mode FL 72
- Port Groups 81
- (continued) 82
- Port Rate Modes 83
- Dedicated Rate Mode 85
- Shared Rate Mode 86
- Modules 87
- Port Speed 88
- Dynamic Bandwidth Management 88
- Out-of-Service Interfaces 89
- Bandwidth Fairness 95
- Local Switching Limitations 97
- Port Index Limitations 97
- PortChannel Limitations 99
- Guidelines and Limitations 100
- Default Settings 103
- Configuring Port Speed 107
- Configuring Rate Mode 108
- Configuring Local Switching 114
- Detailed Steps 115
- Examples 115
- Prerequisites 115
- Enabling Bandwidth Fairness 118
- Disabling Bandwidth Fairness 119
- Restrictions 120
- Configuring Interface Buffers 129
- Performance Buffers 130
- Buffer Pools 130
- BB_Credit Buffers 134
- 1. ISL = E port or TE port 140
- Extended BB_Credits 145
- Configuring Trunking 155
- Trunking F Ports 156
- Key Concepts 157
- Trunking Protocols 157
- Trunk Modes 158
- Information About Trunking 159
- SANs1, 2, and 3 are o 160
- Figure 5-5 VSAN Mismatch 164
- Configuring Trunk Mode 166
- Save the configuration 169
- Configuring PortChannels 171
- PortChannels Overview 172
- E PortChannels 172
- F and TF PortChannels 173
- PortChanneling and Trunking 173
- Load Balancing 174
- PortChannel Modes 176
- PortChannel Deletion 177
- Interfaces in a PortChannel 177
- Compatibility Check 178
- PortChannel Protocols 179
- Channel Group Creation 180
- Autocreation 181
- Deleting PortChannels 188
- Forcing an Interface Addition 189
- NPV switch to ON: 196
- N Port Virtualization 197
- NPV Mode 200
- NP Ports 201
- NP Links 201
- Default Port Numbers 202
- NPV CFS Distribution over IP 203
- NPV Traffic Management 203
- DPVM Configuration Guidelines 205
- Configuring NPV 206
- Verifying NPV Configuration 209
- Verifying NPV 210
- FlexAttach Virtual pWWN 213
- Virtualization 214
- Mapping pWWN to Virtual pWWN 216
- Verifying the End Device 218
- Configuring Port Tracking 221
- Tracking Multiple Ports 225
- Monitoring Ports in a VSAN 225
- Numerics 229
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