Allied Telesis AT-S63 - Manual (Page 484)

Chapter 21: STP and RSTP
484 Section IV: Spanning Tree Protocols
Figure 168. VLAN Fragmentation
You can avoid this problem by not activating spanning tree or by
connecting VLANs using tagged instead of untagged ports. (For
information on tagged and untagged ports, refer to Chapter 23, “Port-
based and Tagged VLANs” on page 547.)
Sales
VLAN
Production
VLAN
Production
VLAN
Sales
VLAN
Blocked Port
Blocked Data Link
FAULT
RPS
MASTER
POWER
CLASS 1 LASER PRODUCT STATUS TERMINAL PORT
1 3 5 7 9 11
2 4 6 8 10 12
13 15 17 19 21 23R
14 16 18 20 22 24R
AT-9424T/SP Gigabit Ethernet Switch
1 3 5 7 9 11 13 15 17 19 21 23R
2 4 6 8 10 12 14 16 18 20 22 24R
23 24
L/A
D/C
D/C
L/A
D/C
L/A 1000 LINK / ACT
HDX / COL FDX
10/100 LINK / ACT PORT ACTIVITY
L/A
1000 LINK / ACT SFP SFP
24
SFP
23
FAULT
RPS
MASTER
POWER
CLASS 1 LASER PRODUCT STATUS TERMINAL PORT
1 3 5 7 9 11
2 4 6 8 10 12
13 15 17 19 21 23R
14 16 18 20 22 24R
AT-9424T/SP Gigabit Ethernet Switch
1 3 5 7 9 11 13 15 17 19 21 23R
2 4 6 8 10 12 14 16 18 20 22 24R
23 24
L/A
D/C
D/C
L/A
D/C
L/A 1000 LINK / ACT
HDX / COL FDX
10/100 LINK / ACT PORT ACTIVITY
L/A
1000 LINK / ACT SFP SFP
24
SFP
23