3com 8807 User Guide
![3com](https://files.manualsbrain.com/attachments/960452ff43b9899cbcffced60c87abf956e7967a/common/fit/150/50/f6ac125d7af2cf40fec58935fa6d4bf71457a57efe50bee91208a434f325/brand_logo.jpeg)
156
C
HAPTER
18: D
IGEST
S
NOOPING
C
ONFIGURATION
Prerequisites
Switches of different manufacturers are interconnected in a network and have
MSTP employed. The network operates properly.
MSTP employed. The network operates properly.
Configuration Procedure
n
■
You must enable digest snooping on an port first before enabling it globally.
■
Digest snooping is unnecessary if the interconnected switches are from the
same manufacturer.
same manufacturer.
■
To enable digest snooping, the interconnected switches must be configured
with the same settings.
with the same settings.
■
To enable digest snooping, all ports in an MSTP region connecting to switches
from other manufacturers must have digest snooping enabled.
from other manufacturers must have digest snooping enabled.
■
Do not enable digest snooping on border ports of an MSTP region.
Digest Snooping
Configuration Example
Network requirements
All switches in Figure 32 are MSTP-enabled and have the same region
configuration. All the switches except that A are of 3Com Technology Co., Ltd.
configuration. All the switches except that A are of 3Com Technology Co., Ltd.
Table 137 Configure digest snooping
Configuration step
Command
Description
Enter system view
system-view
-
Enter Ethernet interface view
interface interface-type
interface-number
interface-number
interface-type: Interface type
interface-number: Interface
number
number
Enable digest snooping on the
port
port
stp config-digest-snooping
Required. Digest snooping is
disabled by default on the
port.
disabled by default on the
port.
Quit Ethernet interface view
quit
-
Enable digest snooping
globally
globally
stp config-digest-snooping
Required. Digest snooping is
disabled by default.
disabled by default.
Display current configuration
information
information
display
current-configuration
current-configuration
This command can be
executed in any view.
executed in any view.