Allied Telesis AT-S88 - Manual (Page 111)

AT-S88 Management Software User’s Guide
103
span two AT-FS750/24POE Fast Ethernet Smart Switches. Two links
consisting of untagged ports connect the separate parts of each VLAN. If
STP or RSTP is activated on the switches, one of the links is disabled. In
the example, the port on the top switch that links the two parts of the
Production VLAN is changed to the block state. This leaves the two parts
of the Production VLAN unable to communicate with each other.
Figure 34. VLAN Fragmentation
1088
AT-FS750/24POE
24 Port 10/100 Mbps WebSmart Switch
with 2 Combo Uplinks + 12 POE Ports
2
3
4
5
6
7
8
9
10 12
11 13
14
15
16
17
18
19
20
21
22
23
24
25
26 PD ON PD ERROR
LINK ACT 100M 10M
1000M 100M
PORT ACTIVITY
10M
1 1 3 5 7 9 11 13 15 17 19 21 23
2 4 6 8 10 12 14 16 18 20 22 24
POE
PWR
SYSTEM
10/100 POE PORTS
25
CLASS 1 LASER PRODUCT
SFP 10/100/1000Base-T
26
SFP 10/100/1000Base-T
UPLINK PORTS 10/100 PORTS
1088
AT-FS750/24POE
24 Port 10/100 Mbps WebSmart Switch
with 2 Combo Uplinks + 12 POE Ports
2
3
4
5
6
7
8
9
10 12
11 13
14
15
16
17
18
19
20
21
22
23
24
25
26 PD ON PD ERROR
LINK ACT 100M 10M
1000M 100M
PORT ACTIVITY
10M
1 1 3 5 7 9 11 13 15 17 19 21 23
2 4 6 8 10 12 14 16 18 20 22 24
POE
PWR
SYSTEM
10/100 POE PORTS
25
CLASS 1 LASER PRODUCT
SFP 10/100/1000Base-T
26
SFP 10/100/1000Base-T
UPLINK PORTS 10/100 PORTS
Sales
VLAN
Production
VLAN
Production
VLAN
Sales
VLAN
Blocked Port
Blocked Data Link