RSTP Configuration 247
Tab le 266 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.
Tab le 267 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.
Tab le 268 Configuring the STP-Ignore Attribute of VLANs on a 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
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