Table of Contents
Advertisement
10. Configure the bridge hello time value. For details, see
11. Flush the MAC addresses from the VLAN FDB. For details, see
12. Enable PortFast on switch ports using the spanning-tree portfast command. For details, see
13. Set the following ports to forwarding mode:
14. Enable the guard root feature with the spanning-tree guard root command. The guard root
15. Enter the copy command to save the running-config file to the startup-config file.
MSTP overview
The IEEE 802.1s Multiple STP (MSTP) helps create multiple loop-free active topologies on a single
physical topology. MSTP enables multiple VLANs to be mapped to the same spanning tree instance
(forwarding path), which reduces the number of spanning tree instances needed to support a large
number of VLANs. Each MSTP instance has a spanning tree topology independent of other
Dell Converged Enhanced Ethernet Administrator's Guide
53-1002116-01
and RSTP)"
on page 54.
switch(conf-stp)#hello-time 5
and MSTP)"
on page 57.
switch(config)#spanning-tree tc-flush-standard
"Enabling port fast (STP)"
NOTE
PortFast only needs to be enabled on ports that connect to workstations or PCs. Repeat these
commands for every port connected to workstations or PCs. Do not enable PortFast on ports
that connect to other switches.
switch(config)#interface intengigabitethernet 0/10
switch(conf-if-te-0/10)#spanning-tree portfast
switch(conf-if-te-0/10)#exit
switch(config)#interface intengigabitethernet 0/11
switch(conf-if-te-0/11)#spanning-tree portfast
switch(conf-if-te-0/11)#exit
Repeat these commands for every port connected to workstations or PCs.
•
All ports of the root switch
•
The root port
•
The designated port
For details, see
"Specifying the port priority"
feature provides a way to enforce the root bridge placement in the network. For detailed
information, refer
to"Enabling the guard root"
All other switch ports connect to other switches and bridges are automatically placed in
blocking mode.
This does not apply to ports connected to workstations or PCs; these ports remain in the
forwarding state.
switch(conf-if-te-0/1)#exit
switch(config)#end
switch#copy running-config startup-config
on page 61. Note that this step is optional.
on page 61.
on page 59. Note that this step is optional.
MSTP overview
"Specifying the bridge hello time (STP
"Flushing MAC addresses (RSTP
6
47
Advertisement
Table of Contents
