Step 6 (Optional) Run:
stp edged-port enable
The port is configured as an edge port.
If a device port is connected to a terminal, you can run this command to configure the port as
an edge port.
By default, the port is a non-edge port.
Step 7 Run:
quit
Return to the system view.
Step 8 (Optional) Run:
error-down auto-recovery cause cause-item interval interval-value
The auto recovery function on an edge port is configured. That is, enable the port in the error-
down state to automatically go Up, and set the delay for the transition from Down to Up.
There is no default value for the recovery time. Therefore, you must specify a delay when
configuring this command.
----End
Follow-up Procedure
When the topology of a spanning tree changes, the forwarding paths to associated VLANs are
changed. Then, ARP entries corresponding to those VLANs on the switching device need to be
updated. MSTP processes ARP entries in either fast or normal mode.
l In fast mode, ARP entries to be updated are directly deleted.
l In normal mode, ARP entries to be updated are rapidly aged.
The remaining lifetime of ARP entries to be updated is set to 0. The switching device rapidly
processes these aged entries. If the number of ARP aging probe attempts is not set to 0,
ARP implements aging probe for these ARP entries.
In either fast or normal mode, MAC entries are directly deleted.
You can run the stp converge { fast | normal } command in the system view to configure the
MSTP convergence mode.
By default, the MSTP convergence is configured as normal.
NOTE
The normal mode is recommended. If the fast mode is adopted, ARP entries will be frequently deleted,
causing the CPU usage on the MPU or LPU to reach 100%. As a result, network flapping frequently occurs.
9.4.4 Checking the Configuration
After MSTP parameters are configured, check whether the configurations take effect.
Prerequisite
The configurations of MSTP parameters are complete.
Quidway S7700 Smart Routing Switch
Configuration Guide - Ethernet 9 MSTP Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
447
To Next Page
Loading...
