R0106-HP MSR Router Series Layer 2 - LAN Switching Configuration Guide(V7)

• To make Digest Snooping take effect, you must enable Digest Snooping both globally and on

associated ports. HP recommends that you enable Digest Snooping on all associated ports first and

then enable it globally. This will make the configuration take effect on all configured ports and

reduce impact on the network.

• To prevent loops, do not enable Digest Snooping on MST region edge ports.

• HP recommends that you enable Digest Snooping first and then the spanning tree feature. To avoid

traffic interruption, do not configure Digest Snooping when the network is already working well.

Configuration procedure

Use this feature on when your HP device is connected to a third-party device that uses its private key to

calculate the configuration digest.

To configure Digest Snooping:

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enter Layer 2 Ethernet interface

view.

interface interface-type

interface-number

N/A

3. Enable Digest Snooping on the

interface.

stp config-digest-snooping

By default, Digest Snooping is

disabled on ports.

4. Return to system view.

quit N/A

5. Enable Digest Snooping

globally.

stp global config-digest-snooping

By default, Digest Snooping is

disabled globally.

Digest Snooping configuration example

Network requirements

As shown in Figure 15, Device A and Device B connect to Device C, which is a third-party device. All

these devices are in the same region.

Enable Digest Snooping on the ports of Device A and Device B that connect to Device C, so that the three

devices can communicate with one another.