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548 CHAPTER 26: RSTP CONFIGURATION
Perform the following configurations in Ethernet Port View.
Table 597 Enable/Disable RSTP on a Port
Note that the redundancy route may be generated after RSTP is disabled on the
Ethernet port.
By default, RSTP on all the ports will be enabled after it is enabled on the Switch.
Configure RSTP
Operating Mode
RSTP is executable in RSTP mode or STP-compatible mode. RSTP mode is applied
when all the network devices provided for executing RSTP, while the STP-compatible
mode is applied when both STP and RSTP are executable on the network.
You can use the following command to set the RSTP operating mode.
Perform the following configurations in System View.
Table 598 Set RSTP Operating Mode
Normally, if there is a bridge provided to execute STP in the Switching network, the
port (in the Switch running RSTP), which connects to another port (in the Switch for
executing STP), can automatically Switch to STP compatible mode from RSTP mode.
By default, RSTP runs in RSTP mode.
Configure the
STP-Ignore attribute of
VLANs on a Switch
RSTP is a single spanning tree protocol, under which only one spanning tree will be
generated on one Switched network. To ensure the successful communication
between VLANs on a network, all of them must be distributed consecutively along
the STP path; otherwise, some VLANs will be isolated due to the blocking of
intra-links, causing the failure in cross-VLAN communication. Once there are VLANs
specially required to be located away from the STP path, you can solve the
consequent blocking by configuring the STP-Ignore attribute on the appropriate
Switch.
Once an STP-Ignored VLAN is configured, the packets of this VLAN will be forwarded
on any Switch port, with no restriction from the calculated STP path.
You can configure the STP-Ignore attribute on a Switch by using the following
commands.
Perform the following configuration in System View.
Table 599 Configuring the STP-Ignore Attribute of VLANs on a Switch
By default, no VLAN is STP-Ignored if STP is enabled on the Switch.
Operation Command
Enable RSTP on a specified port stp enable
Disable RSTP on a specified port stp disable
Operation Command
Configure to run RSTP in STP-compatible/RSTP mode stp mode { stp | rstp }
Restore the default RSTP mode undo stp mode
Operation Command
Specify an STP-Ignored VLAN stp ignored vlan vlan_list
Cancel the configuration of the STP-Ignored
VLAN
undo stp ignored vlan vlan_list