Table of Contents
Advertisement
5. Map a VLAN to an MSTP instance using the instance command. For more details see
6. Specify the maximum hops for a BPDU to prevent the messages from looping indefinitely on
7.
For more information on MSTP, see
page 51.
STP, RSTP, and MSTP configuration guidelines and restrictions
Follow these configuration guidelines and restrictions when configuring STP, RSTP, and MSTP:
•
•
•
•
•
•
•
•
•
•
Dell Converged Enhanced Ethernet Administrator's Guide
53-1002116-01
STP, RSTP, and MSTP configuration guidelines and restrictions
a VLAN to an MSTP instance"
switch(conf-mstp)#instance 1 vlan 2, 3
switch(conf-mstp)#instance 2 vlan 4-6
switch(conf-mstp)#instance 1 priority 4096
the interface using the max-hops hop_count command. For more details see
maximum number of hops for a BPDU (MSTP)"
switch(conf-mstp)#max-hops 25
Enter the copy command to save the running-config file to the startup-config file.
switch(conf-mstp)#exit
switch(config)#end
switch#copy running-config startup-config
You have to disable one form of xSTP before enabling another.
Packet drops or packet flooding may occur if you do not enable xSTP on all devices connected
on both sides of parallel links.
LAGs are treated as normal links and by default are enabled for STP.
You can have 16 MSTP instances and one MSTP region.
Create VLANs before mapping them to MSTP instances.
The MSTP force-version option is not supported.
For load balancing across redundant paths in the network to work, all VLAN-to-instance
mapping assignments must match; otherwise, all traffic flows on a single link.
When you enable MSTP by using the global protocol spanning-tree mstp command, RSTP is
automatically enabled.
For two or more switches to be in the same MSTP region, they must have the same
VLAN-to-instance map, the same configuration revision number, and the same name.
Spanning Tree topologies must not be enabled on any direct server connections to the
front-end Ten Gigabit Ethernet ports that may run FCoE traffic. This may result in lost or
dropped FCoE logins.
on page 55.
on page 56.
"STP, RSTP, and MSTP configuration and management"
6
"Mapping
"Specifying the
on
49
Advertisement
Table of Contents
