Chapter 13 Spanning Tree Protocol
GS1920v2 Series User’s Guide
153
13.10 Te c hnic a l Re fe re nc e
This section provides technical background information on the topics discussed in this chapter.
13.10.1 MSTP Ne two rk Exa m ple
The following figure shows a network example where two VLANs are configured on the two switches. If
the switches are using STP or RSTP, the link for VLAN 2 will be blocked as STP and RSTP allow only one link
in the network and block the redundant link.
Fig ure 115
STP/RSTP Network Example
With MSTP, VLANs 1 and 2 are mapped to different spanning trees in the network. Thus traffic from the
two VLANs travel on different paths. The following figure shows the network example using MSTP.
Fig ure 116
MSTP Network Example
A
B
VLAN 1
VLAN 2
A
B
VLAN 1
VLAN 2