DELL Networking. STP Configuring

MSTP, RSTP, STP

Configuring STP for DELL switches (depending on the version of the OS switch syntax may vary slightly.)

Before making STP setting on the switch port, you must set a global preference protocol:

console(config)# spanning-tree 
console(config)# spanning-tree mode rstp 
console(config)# spanning-tree priority 12288 
console(config)# spanning-tree hello-time 5 
console(config)# spanning-tree max-age 12 
console(config)# spanning-tree forward-time 25 
console(config)# exit

In this case, the adjusted version of the protocol, switch priority in the construction of the tree, while promoting the package, the duration of sending hello packet. Once made global protocol setting, make the setting Protocol on the switch ports that will participate in the construction of the tree topology.

console> enable 
console# configure 
console(config)# interface ethernet 1/e1 
console(config-if)# spanning-tree disable 
console(config-if)# spanning-tree cost 35000 
console(config-if)# spanning-tree port-priority 96 
console(config-if)# spanning-tree portfast 
console(config-if)# exit 
console(config)# exit

When setting specifies the path cost and port priority.

Also, the protocol can be configured in groups of links united LAG protocol. As data links act as a single logical link.

console(config)# interface port-channel 1 
console(config-if)# spanning-tree disable 
console(config-if)# spanning-tree cost 35000 
console(config-if)# spanning-tree port-priority 96 
console(config-if)# spanning-tree portfast

Configuring RSTP to STP differ in the choice of mode of protocol:

console(config)# interface ethernet 1/e5 
console(config-if)# spanning-tree link-type shared 
console(config-if)# spanning tree mode rstp 

MSTP protocol differs from STP or RSTP protocol that is able to break the logical links in a VLAN. Thus in one physical links may simultaneously present both active and non-active (logically broken) links multiple VLAN.

console(config)# spanning-tree mst configuration 
console(config-mst)# instance 1 add vlan 10-20 
console(config-mst)# name region1 
console(config-mst)# revision 1 
console(config)# spanning-tree mst configuration 
console(config-mst)# instance 2 add vlan 21-30 
console(config-mst)# name region1 
console(config-mst)# revision 1 
console(config-mst)# show pending 

Pending MST configuration 
Name: Region1 
Revision: 1 
Instance Vlans Mapped 
--------    ------------ 
0           1-9,31-4094 
1           10-20 
2           21-30