Chapter 5: Layer 2 Features
Extreme Networks EAS 100-24t Switch CLI Manual
156
region, its maximum possible extent and will appear as one virtual bridge that runs a single spanning
tree. Consequentially, frames assigned to different VLANs will follow different data routes within
administratively established regions on the network, continuing to allow simple and full processing of
frames, regardless of administrative errors in defining VLANs and their respective spanning trees.
Each switch utilizing the MSTP on a network will have a single MSTP configuration that will have the
following three attributes:
1 A configuration name defined by an alphanumeric string of up to 32 characters (defined in the
config stp mst_config_id command as name <string>).
2 A configuration revision number (named here as a revision_level) and;
3 A 4094 element table (defined here as a vid_range) which will associate each of the possible 4094
VLANs supported by the switch for a given instance.
To utilize the MSTP function on the switch, three steps need to be taken:
1 The switch must be set to the MSTP setting (config stp version)
2 The correct spanning tree priority for the MSTP instance must be entered (config stp priority).
3 VLANs that will be shared must be added to the MSTP Instance ID (config stp instance_id).
The Multiple Spanning Tree Protocol commands in the CLI are listed (along with the appropriate
parameters) in the following table:
Command Parameters
enable stp
disable stp
config stp version [mstp | rstp | stp]
config stp {maxage <value 6-40> | maxhops <value 6-40> | hellotime <value 1-2> |
forwarddelay <value 4-30> | txholdcount <value 1-10> | fbpdu [enable |
disable]}
config stp ports <portlist> {externalCost [auto | <value 1-200000000>] | hellotime <value 1-2> |
migrate [yes | no] | edge [true | false | auto] | restricted_role [true | false] |
restricted_tcn [true | false] | p2p [true | false | auto] | state [enable | disable] |
fbpdu [enable | disable]}
create stp instance_id <value 1-4>
config stp instance_id <value 1-4> [add_vlan | remove_vlan] <vidlist>
delete stp instance_id <value 1-4>
config stp priority <value 0-61440> instance_id <value 0-4>
config stp mst_config_id {revision_level <int 0-65535> | name <string>}
config stp mst_ports <portlist> instance_id <value 0-4> {internalCost [auto | <value 1-200000000>] |
priority <value 0-240>}
show stp
show stp ports {<portlist>} {instance <value 0-4>}
show stp instance {<value 0-4>}
show stp mst_config_id
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