H3C S5810 Series, Руководство по эксплуатации

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Configuration Prerequisites
Associated devices of different vendors are interconnected and run MSTP.
Configuration Procedure
Follow these steps to configure Digest Snooping:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter Ethernet
interface view,
or Layer-2
aggregate
interface view
interface interface-type
interface-number
Enter interface
view or port
group view
Enter port group
view
port-group manual
port-group-name
Required
Use either command.
Configurations made in
interface view will take effect on
the current port only;
configurations made in port
group view will take effect on all
ports in the port group.
Enable digest snooping on the
interface or port group
stp
config-digest-snooping
Required
Not enabled by default
Return to system view
quit
—
Enable global digest snooping
stp
config-digest-snooping
Required
Not enabled by default
z
You can enable Digest Snooping on only a device that is connected to another vendor’s device that
uses its private key to calculate the configuration digest.
z
With the Digest Snooping feature enabled, comparison of configuration digest is not needed for
in-the-same-region check, so the VLAN-to-MSTI mappings must be the same on associated ports.
z
With global Digest Snooping enabled, modification of VLAN-to-MSTI mappings and removing of
the current region configuration using the
undo stp region-configuration
command are not
allowed. You can only modify the region name and revision level.
z
You need to enable this feature both globally and on associated ports to make it take effect. It is
recommended to enable the feature on all associated ports first and then globally, making all
configured ports take effect, and disable the feature globally to disable it on all associated ports.
z
It is not recommended to enable Digest Snooping on MST region edge ports to avoid loops.
z
It is recommended to enable Digest Snooping first and then MSTP. Do not configure Digest
Snooping when the network works well to avoid traffic interruption.
Configuration Example
Network requirements
z
Device A and Device B connect to a third-party’s device and all the devices are in the same region.