R21xx-HP FlexFabric 11900 Layer 2 LAN Switching Command Reference

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Default
A port automatically recognizes the formats of received MSTP packets and determines the formats of
MSTP packets to be sent based on the recognized formats.
Views
Layer 2 Ethernet interface view, Layer 2 aggregate interface view
Predefined user roles
network-admin
Parameters
auto: Configures the ports to recognize the MSTP BPDU format automatically and determine the format
of MSTP BPDUs to send.
dot1s: Configures the ports to receive and send only standard-format (802.1s-compliant) MSTP BPDUs.
legacy: Configures the ports to receive and send only compatible-format MSTP BPDUs.
Usage guidelines
When the setting is configured in Layer 2 Ethernet interface view, it takes effect only on that interface.
When the setting is configured in Layer 2 aggregate interface view, it takes effect only on the aggregate
interface.
When the setting is configured on a member port in an aggregation group, it takes effect only after the
port leaves the aggregation group.
Examples
# Configure Ten-GigabitEthernet 1/0/1 to send only standard-format (802.1s) MSTP packets.
<Sysname> system-view
[Sysname] interface ten-gigabitethernet 1/0/1
[Sysname-Ten-GigabitEthernet1/0/1] stp compliance dot1s
stp config-digest-snooping
Use stp config-digest-snooping to enable digest snooping.
Use undo stp config-digest-snooping to disable digest snooping.
Syntax
stp config-digest-snooping
undo stp config-digest-snooping
Default
The feature is disabled.
Views
Layer 2 Ethernet interface view, Layer 2 aggregate interface view
Predefined user roles
network-admin
Usage guidelines
Enable this feature both globally and on ports connected to other vendors' devices. To minimize impact,
enable the feature on all associated ports before you enable it globally.