Configuring The Maximum-Hop Count; Specifying The Link Type To Ensure Rapid Transitions - Cisco 3020 - Catalyst Blade Switch Configuration Manual

Configuring MSTP Features

Configuring the Maximum-Hop Count

Beginning in privileged EXEC mode, follow these steps to configure the maximum-hop count for all
MST instances. This procedure is optional.
Command
Step 1
configure terminal
Step 2 spanning-tree mst max-hops hop-count
Step 3 end
Step 4 show spanning-tree mst
Step 5
copy running-config startup-config
To return the switch to its default setting, use the no spanning-tree mst max-hops global configuration
command.

Specifying the Link Type to Ensure Rapid Transitions

If you connect a port to another port through a point-to-point link and the local port becomes a
designated port, the RSTP negotiates a rapid transition with the other port by using the
proposal-agreement handshake to ensure a loop-free topology as described in the
section on page
By default, the link type is controlled from the duplex mode of the interface: a full-duplex port is
considered to have a point-to-point connection; a half-duplex port is considered to have a shared
connection. If you have a half-duplex link physically connected point-to-point to a single port on a
remote switch running MSTP, you can override the default setting of the link type and enable rapid
transitions to the forwarding state.
Beginning in privileged EXEC mode, follow these steps to override the default link-type setting. This
procedure is optional.
Command
Step 1
configure terminal
Step 2 interface interface-id
Step 3 spanning-tree link-type point-to-point
Step 4 end
Step 5
show spanning-tree mst interface interface-id
Step 6 copy running-config startup-config
To return the port to its default setting, use the no spanning-tree link-type interface configuration
command.
Cisco Catalyst Blade Switch 3020 for HP Software Configuration Guide
14-24
Purpose
Enter global configuration mode.
Specify the number of hops in a region before the BPDU is
discarded, and the information held for a port is aged.
For hop-count, the range is 1 to 255; the default is 20.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
14-10.
Purpose
Enter global configuration mode.
Specify an interface to configure, and enter interface
configuration mode. Valid interfaces include physical ports,
VLANs, and port-channel logical interfaces. The VLAN ID
range is 1 to 4094. The port-channel range is 1 to 48.
Specify that the link type of a port is point-to-point.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Chapter 14 Configuring MSTP
"Rapid Convergence"
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