Chapter 2: Virtual Chassis Stacking
74
Invalid Stack Trunks
Figure 30 through Figure 33 on page 75 show examples of different types
of invalid stack trunks.
Example 1 Stack trunks must be direct links between trunk ports. There cannot be
any intermediary networking devices, such as media converters, Ethernet
switches, or routers, between trunk ports. Figure 30 is an example of this
type of invalid trunk
.
Figure 30. Invalid Stack Trunk with an Intermediary Networking Device
Example 2 Trunks must have a minimum of two ports used per switch. Figure 31 is an
example of an invalid stack trunk with one port used per switch.
Figure 31. Invalid Stack Trunk with One Port Used Per Switch
4681012
351
2
7 9 11 13 15 17 19
16 18 2014
21 23
22 24
FDX HDX COL
27/S1
28/S2
25 SFP+
26
AT-x530L-28GTX
CLASS
1
LASER PRODUCT
CONSOLE
1000 LINK ACT 100 LINK ACT
10G / 1G
27/S1
28/S2
4681012
351
2
7 9 11 13 15 17 19
16 18 2014
21 23
22 24
FDX HDX COL
27/S1
28/S2
25 SFP+
26
AT-x530L-28GTX
CLASS
1
LASER PRODUCT
CONSOLE
1000 LINK ACT 100 LINK ACT
10G / 1G
27/S1
28/S2
27/S1
28/S2
27/S1
28/S2
4622
Ethernet switch
4681012
351
2
7 9 11 13 15 17 19
16 18 2014
21 23
22 24
FDX HDX COL
27/S1
28/S2
25 SFP+
26
CLASS
1
LASER PRODUCT
CONSOLE
1000 LINK ACT 100 LINK ACT
10G / 1G
27/S1
28/S2
4681012
351
2
7 9 11 13 15 17 19
16 18 2014
21 23
22 24
FDX HDX COL
27/S1
28/S2
25 SFP+
26
CLASS
1
LASER PRODUCT
CONSOLE
1000 LINK ACT 100 LINK ACT
10G / 1G
27/S1
28/S2
27/S1
27/S1
4626
AT-x530L-28GTX
AT-x530L-28GTX
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