Converged Enhanced Ethernet Administrator’s Guide vii
53-1002163-01
STP, RSTP, and MSTP configuration and management . . . . . . . . . . 66
Enabling STP, RSTP, or MSTP . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Disabling STP, RSTP, or MSTP . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Shutting down STP, RSTP, or MSTP globally . . . . . . . . . . . . . . . .67
Specifying the bridge priority. . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Specifying the bridge forward delay . . . . . . . . . . . . . . . . . . . . . . 68
Specifying the bridge maximum aging time. . . . . . . . . . . . . . . .68
Enabling the error disable timeout timer . . . . . . . . . . . . . . . . . .69
Specifying the error disable timeout interval. . . . . . . . . . . . . . .69
Specifying the port-channel path cost . . . . . . . . . . . . . . . . . . . . 69
Specifying the bridge hello time (STP and RSTP). . . . . . . . . . . .70
Specifying the transmit hold count (RSTP and MSTP). . . . . . . .70
Enabling Cisco interoperability (MSTP). . . . . . . . . . . . . . . . . . . .70
Disabling Cisco interoperability (MSTP) . . . . . . . . . . . . . . . . . . . 71
Mapping a VLAN to an MSTP instance . . . . . . . . . . . . . . . . . . . . 71
Specifying the maximum number of hops
for a BPDU (MSTP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Specifying a name for an MSTP region. . . . . . . . . . . . . . . . . . . . 72
Specifying a revision number for an MSTP configuration . . . . . 72
Flushing MAC addresses (RSTP and MSTP). . . . . . . . . . . . . . . . 72
Clearing spanning tree counters. . . . . . . . . . . . . . . . . . . . . . . . .73
Clearing spanning tree-detected protocols . . . . . . . . . . . . . . . .73
Displaying STP, RSTP, and MSTP-related information . . . . . . . .73
Configuring STP, RSTP, or MSTP on CEE interface ports . . . . . . . . . 74
Enabling automatic edge detection . . . . . . . . . . . . . . . . . . . . . . 74
Configuring the path cost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Enabling a port (interface) as an edge port . . . . . . . . . . . . . . . . 74
Enabling the guard root . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Specifying the MSTP hello time. . . . . . . . . . . . . . . . . . . . . . . . . .75
Specifying restrictions for an MSTP instance . . . . . . . . . . . . . . 76
Specifying a link type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Enabling port fast (STP). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Specifying the port priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Restricting the port from becoming a root port . . . . . . . . . . . . . 77
Restricting the topology change notification . . . . . . . . . . . . . . .78
Enabling spanning tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Disabling spanning tree. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Chapter 8 Configuring Link Aggregation
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Link aggregation overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Link Aggregation Group configuration . . . . . . . . . . . . . . . . . . . . 81
Link Aggregation Control Protocol. . . . . . . . . . . . . . . . . . . . . . . .84
Dynamic link aggregation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
Static link aggregation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
Brocade-proprietary aggregation . . . . . . . . . . . . . . . . . . . . . . . . 84
LAG distribution process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
LACP configuration guidelines and restrictions . . . . . . . . . . . . . . . .85
Default LACP configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85