H3C S7500 Series Ethernet Switches Operation Manual

Operation Manual – MSTP
H3C S7500 Series Ethernet Switches Chapter 1
MSTP Configuration
1-39
To do ... Use the command ... Remarks
Enter system view
system-view
—
Enable the rapid
transition function
stp interface interface-type
interface-number
no-agreement-check
Required
By default, the rapid transition
function is disabled on a port.
2) Configure the rapid transition function in Ethernet port view.
Follow these steps to configure the rapid transition function in Ethernet port view:
To do ... Use the command ... Remarks
Enter system view
system-view
—
Enter Ethernet port
view
interface interface-type
interface-number
—
Enable the rapid
transition function
stp no-agreement-check
Required
By default, the rapid transition
function is disabled on a port.
 Note:
z The rapid transition function can be enabled on root ports or alternate ports only.
z If you configure the rapid transition function on the designated port, the function
does not take effect on the port.
1.8 VLAN-VPN Tunnel Configuration
1.8.1 Introduction
The VLAN-VPN tunnel function enables BPDUs to be transparently transmitted
between geographically dispersed user networks through specified VLAN VPNs in the
operator’s network, through which spanning trees can be generated across these user
networks and are independent of those of the operator’s network.
As shown in
Figure 1-6, the upper part is the operator’s network, and the lower part is
the user network. The operator’s network comprises packet ingress/egress devices,
and the user’s network has network A and network B. On the operator’s network,
configure the arriving BPDU packets at the ingress to have MAC addresses in a special
format, and reconvert them back to their original formats at the egress. This is how
transparent transmission is implemented over the operator’s network.