Configuring No Agreement Check - HP 5120 EI Series Lan Switching Configuration Manual

[DeviceA] stp config-digest-snooping
# Enable Digest Snooping on GigabitEthernet 1/0/1 of Device B and enable global Digest
Snooping on Device B.
<DeviceB> system-view
[DeviceB] interface gigabitethernet 1/0/1
[DeviceB-GigabitEthernet1/0/1] stp config-digest-snooping
[DeviceB-GigabitEthernet1/0/1] quit
[DeviceB] 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.
•
Both RSTP and MSTP devices can perform rapid transition on a designated port only when the port
receives an agreement packet from the downstream device. RSTP and MSTP devices have the following
differences:
For MSTP, the root port of the downstream device sends an agreement packet only after it receives
•
an agreement packet from the upstream device.
• For RSTP, the downstream device sends an agreement packet regardless of whether an agreement
packet from the upstream device is received.
Figure 24 Rapid state transition of an MSTP designated port
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