7-6 S
UMMIT
S
WITCH
I
NSTALLATION
AND
U
SER
G
UIDE
S
PANNING
T
REE
P
ROTOCOL
(STP)
Table 7-1 shows the commands used to configure STP.
Table 7-1:
STP Configuration Commands
Command Description
create stpd <stpd_name> Creates an STPD. When created, an STPD has
the following default parameters:
■
Bridge priority — 32,768
■
Hello time — 2 seconds
■
Forward delay — 15 seconds
enable stpd [<stpd_name> | all] Enables the STP protocol for one or all STPDs.
The default setting is disabled.
enable stpd port <portlist> Enables the STP protocol on one or more ports.
If STPD is enabled for a port, BPDUs will be
generated on that port if STP is enabled for the
associated STPD. The default setting is enabled.
config stpd <stpd_name> add vlan <name> Adds a VLAN to the STPD.
config stpd <stpd_name> hellotime <value> Specifies the time delay (in seconds) between
the transmission of BPDUs from this STPD when
it is the Root Bridge.
The range is 1 through 10. The default setting is
2 seconds.
config stpd <stpd_name> forwarddelay
<value>
Specifies the time (in seconds) that the ports in
this STPD spend in the listening and learning
states when the switch is the Root Bridge.
The range is 4 through 30. The default setting is
15 seconds.
config stpd <stpd_name> maxage <value> Specifies the maximum age of a BPDU in this
STPD.
The range is 6 through 40. The default setting is
20 seconds.
Note that the time must be greater than, or equal
to 2 X (Hello Time + 1) and less than, or equal to
2 X (Forward Delay –1).
config stpd <stpd_name> priority <value> Specifies the priority of the STPD. By changing
the priority of the STPD, you can make it more or
less likely to become the Root Bridge.
The range is 0 through 65,535. The default
setting is 32,768. A setting of 0 indicates the
highest priority.
Summit.bk : 7STP.FM Page 6 Thursday, June 18, 1998 9:27 AM
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