R2511-HP MSR Router Series Layer 2 - LAN Switching Configuration Guide(V5)

Digest snooping configuration example

Network requirements

As shown in Figure 18, Router A and Router B connect to Router C, which is a third-party router. All these

routers are in the same region.

Enable digest snooping on the ports of Router A and Router B that connect to Router C, so that the three

routers can communicate with one another.

Figure 18 Network diagram

Configuration procedure

# Enable digest snooping on Ethernet 1/1 of Router A and enable global digest snooping on Router A.

<RouterA> system-view

[RouterA] interface ethernet 1/1

[RouterA-Ethernet1/1] stp config-digest-snooping

[RouterA-Ethernet1/1] quit

[RouterA] stp config-digest-snooping

# Enable digest snooping on Ethernet 1/1 of Router B and enable global digest snooping on Router B.

<RouterB> system-view

[RouterB] interface ethernet 1/1

[RouterB-Ethernet1/1] stp config-digest-snooping

[RouterB-Ethernet1/1] quit

[RouterB] stp config-digest-snooping

Configuring No Agreement Check

In RSTP and MSTP, the following types of messages are used for rapid state transition on designated

ports:

• Proposal—Sent by designated ports to request rapid transition.

• Agreement—Used to acknowledge rapid transition requests.