Dell Brocade 6520 Release Notes v1.0 - Page 8

FEC (Forward Error Correction) Support Enhancements FEC Support on Additional Links With FOS v7.1 FEC support is extended as follows: Note:  FEC support on links between 16G switch and 16G AG  FEC support on links between 16G switch and Brocade 16G HBA (requires HBA driver 3.2 or later)  FEC support on links between a pair 16G AGs (for cascaded Access Gateway Configurations)  FEC support on links between 16G AG and Brocade 16G HBA (requires HBA driver 3.2 or later) In FOS v7.0.x FEC is supported only on the 16G FC ISLs. Enable or Disable FEC for Long Distance Port  FOS v7.1 allows users to enable or disable the FEC feature while configuring a long distance link. This allows end users to turn off FEC where it is not recommended, such as when configuring active DWDM links. Performance Optimization on FC Long Distance ISLs Several enhancements are made in FOS v7.1 to allow users to optimize performance on FC long distance ISLs. These enhancements include:  Two new options for the portcfglongdistance command - one option to configure the number of buffers, and another option to configure the frame size for LD and LS modes.  Display of average buffer usage and average frame size in portbuffershow output  A new command portBufferCalc, to calculate the number of buffers required on a long distance port, by providing the distance, speed and average frame size. FOS Security Enhancements TACACS+ Support In addition to RADIUS and LDAP, FOS v7.1 also supports TACACS+ for user authentication and authorization. Support includes:  Allowing users to login to FOS switches using user accounts configured in the TACACS+ server.  Allowing users to configure the TACACS+ server configuration using the "aaaconfig" command. Open LDAP Support Starting with FOS v7.1, OpenLDAP server based authentication is supported for FOS platforms. When configured with the correct CA certificate(s), the complete LDAP session will be encrypted using TLS. Miscellaneous LDAP Enhancements Previous to FOS v7.1, complete "userPrincipalName" was mandatory for user authentication. Starting with FOS v7.1, users need not provide the domain part of the "userPrincipalName". Support for Password Expiration Policy per User FOS v7.1 allows the password expiration policy to be configured on a per user basis. User accounts without this configuration will take the global password expiration configuration. Fabric OS v7.1.0a Release Notes v1.0 Page 8 of 41