H3C Technologies H3C S7500E Series Switches - Manual (Page 186)

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Enabling the Digest Snooping feature on the port connecting the local device to a third-party device in
the same MST region can make the two devices communicate with each other.
Before enabling digest snooping, ensure that associated devices of different vendors are connected
and run MSTP.
Configuring the Digest Snooping feature
You can enable Digest Snooping only on a device that is connected to a third-party device that uses its
private key to calculate the configuration digest.
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.
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