Converged Enhanced Ethernet Administrator’s Guide ix
53-1002507-01
DRAFT: BROCADE CONFIDENTIAL
STP, RSTP, and MSTP configuration and management . . . . . . . . . .64
Enabling STP, RSTP, or MSTP . . . . . . . . . . . . . . . . . . . . . . . . . . .64
Disabling STP, RSTP, or MSTP . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Shutting down STP, RSTP, or MSTP globally . . . . . . . . . . . . . . . .65
Specifying the bridge priority. . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Specifying the bridge forward delay . . . . . . . . . . . . . . . . . . . . . . 66
Specifying the bridge maximum aging time. . . . . . . . . . . . . . . .66
Enabling the error disable timeout timer . . . . . . . . . . . . . . . . . .67
Specifying the error disable timeout interval. . . . . . . . . . . . . . .67
Specifying the port-channel path cost . . . . . . . . . . . . . . . . . . . . 67
Specifying the bridge hello time (STP and RSTP). . . . . . . . . . . .68
Specifying the transmit hold count (RSTP and MSTP). . . . . . . .68
Enabling Cisco interoperability (MSTP). . . . . . . . . . . . . . . . . . . .69
Disabling Cisco interoperability (MSTP) . . . . . . . . . . . . . . . . . . .69
Mapping a VLAN to an MSTP instance . . . . . . . . . . . . . . . . . . . . 69
Specifying the maximum number of hops
for a BPDU (MSTP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Specifying a name for an MSTP region. . . . . . . . . . . . . . . . . . . . 70
Specifying a revision number for an MSTP configuration . . . . . 70
Flushing MAC addresses (RSTP and MSTP). . . . . . . . . . . . . . . . 71
Clearing spanning tree counters. . . . . . . . . . . . . . . . . . . . . . . . . 71
Clearing spanning tree-detected protocols . . . . . . . . . . . . . . . . 71
Displaying STP, RSTP, and MSTP-related information . . . . . . . .72
Configuring STP, RSTP, or MSTP on CEE interface ports . . . . . . . . .72
Enabling automatic edge detection . . . . . . . . . . . . . . . . . . . . . .72
Configuring the path cost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Enabling a port (interface) as an edge port . . . . . . . . . . . . . . . .73
Enabling the guard root . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Specifying the MSTP hello time. . . . . . . . . . . . . . . . . . . . . . . . . . 74
Specifying restrictions for an MSTP instance . . . . . . . . . . . . . . 74
Specifying a link type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Enabling port fast (STP). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Specifying the port priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Restricting the port from becoming a root port . . . . . . . . . . . . . 76
Restricting the topology change notification . . . . . . . . . . . . . . . 76
Enabling spanning tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Disabling spanning tree. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Chapter 8 Configuring Link Aggregation
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Link aggregation overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
Link Aggregation Group configuration . . . . . . . . . . . . . . . . . . . .79
Link Aggregation Control Protocol. . . . . . . . . . . . . . . . . . . . . . . .82
Dynamic link aggregation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
Static link aggregation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
Brocade-proprietary aggregation . . . . . . . . . . . . . . . . . . . . . . . . 82
LAG distribution process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
LACP configuration guidelines and restrictions . . . . . . . . . . . . . . . .83
Default LACP configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83