Reference Guide

Configuring buffers using frame size................................................................................................................................................................................................. 132
Calculating the number of buffers required given the distance, speed, and frame size........................................................................................132
Allocating buffer credits for F_Ports....................................................................................................................................................................................................133
Monitoring buffers in a port group....................................................................................................................................................................................................... 134
Buffer credits per switch or blade model......................................................................................................................................................................................... 135
Maximum configurable distances for Extended Fabrics.........................................................................................................................................................136
Downgrade considerations....................................................................................................................................................................................................................... 137
Configuring credits for a single VC......................................................................................................................................................................................................138
Buffer credit recovery ...........................................................................................................................................................................................................................................139
Buffer credit recovery over an E_Port............................................................................................................................................................................................... 139
Buffer credit recovery over an F_Port................................................................................................................................................................................................139
Buffer credit recovery over an EX_Port............................................................................................................................................................................................140
Enabling and disabling buffer credit recovery...............................................................................................................................................................................140
Credit loss detection.................................................................................................................................................................................................................................................141
Back-end credit loss detection and recovery support on Brocade 6520 switches................................................................................................. 141
Enabling back-end credit loss detection and recovery for link reset thresholds.........................................................................................................141
Performing link reset for loss of sync from peer ports.............................................................................................................................................................142
Back-end credit loss detection and recovery for link faults...................................................................................................................................................143
Managing User Accounts..............................................................................................................................................................................................................................................145
User accounts overview ......................................................................................................................................................................................................................................145
Role-Based Access Control.................................................................................................................................................................................................................... 145
Management channel...................................................................................................................................................................................................................................147
Managing user-defined roles...................................................................................................................................................................................................................147
Configuring time-based access.............................................................................................................................................................................................................148
Local database user accounts.......................................................................................................................................................................................................................... 149
Default accounts.............................................................................................................................................................................................................................................149
Local account passwords............................................................................................................................................................................................................................151
Local user account database distribution.....................................................................................................................................................................................................151
Distributing the local user database...................................................................................................................................................................................................... 151
Accepting distributed user databases on the local switch...................................................................................................................................................... 152
Rejecting distributed user databases on the local switch........................................................................................................................................................152
Password policies.....................................................................................................................................................................................................................................................152
Password strength policy.......................................................................................................................................................................................................................... 152
Password history policy..............................................................................................................................................................................................................................153
Password expiration policy.......................................................................................................................................................................................................................154
Account lockout policy................................................................................................................................................................................................................................155
Changing the root password without the old password...........................................................................................................................................................156
Configuring the password hash type.................................................................................................................................................................................................. 156
The boot PROM password.................................................................................................................................................................................................................................157
Setting the boot PROM password for a switch with a recovery string............................................................................................................................ 157
Setting the boot PROM password for a Backbones and Directors with a recovery string................................................................................. 158
Setting the boot PROM password for a switch without a recovery string.....................................................................................................................159
Setting the boot PROM password for a Backbone or Director without a recovery string...................................................................................159
Remote authentication..........................................................................................................................................................................................................................................160
Remote authentication configuration................................................................................................................................................................................................. 160
Setting the switch authentication mode............................................................................................................................................................................................ 163
Fabric OS user accounts............................................................................................................................................................................................................................163
Fabric OS users on the RADIUS server............................................................................................................................................................................................164
Setting up a RADIUS server.................................................................................................................................................................................................................... 166
LDAP configuration and Microsoft Active Directory..................................................................................................................................................................174
Brocade Fabric OS Administration Guide, 8.0.1
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