3Com Switch 7750 Series
Command Reference Guide – MSTP Chapter 1 MSTP Configuration Commands
1-13
Note:
z The digest snooping feature is needed only when your Switch 7750 is connected to
partner's proprietary protocol-adopted switches.
z To enable the digest snooping feature successfully, you must first enable it on all the
switch ports that connect to partner's proprietary protocol-adopted switches and
then enable it globally.
z To enable the digest snooping feature, the interconnected switches must be
configured with exactly the same MST settings.
z The digest snooping feature must be enabled on all the switch ports that connect to
partners' proprietary protocol-adopted switches in the same MST region.
z With the digest snooping feature enabled, the VLAN-to-MSTI mapping cannot be
modified.
z The digest snooping feature is not applicable to MST region edge ports.
Example
# Enable the digest snooping feature for Ethernet1/0/1 port.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] interface Ethernet1/0/1
[3Com-Ethernet1/0/1] stp config-digest-snooping
[3Com-Ethernet1/0/1] quit
[3Com]stp config-digest-snooping
1.1.13 stp cost Syntax
stp [ instance instance-id ] cost cost
undo stp [ instance instance-id ] cost
View
Ethernet port view
Parameter
instance-id: ID of a spanning tree instance ranging from 0 to 16. A value of 0 specifies
the CIST.
cost: Path cost to be set for the port. This argument ranges from 1 to 200,000.