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Chapter 2: Virtual Chassis Stacking
74
A trunk of 5Gbps ports for a stack of two switches can have two or more
links per switch. As mentioned previously, the more links in a trunk, the
greater its bandwidth and resiliency. Examples are shown in Figure 28.
Figure 28. Trunks of 5Gbps Ports for Stacks of Two GS980MX/28PSm
1
3
5
7
9
11
13
15
17
19
21
23
23
23
2
4
6
8
10
12
14
16
18
20
22
24
24
PORTS 1-20
PORTS 21-24
24
5G / 2.5G/1G/100
1000 LINK
ACT
100 LINK
ACT
5G/2.5G/1G LINK
ACT
100 LINK
ACT
PD ON
PD ERR
MAX CURRENT
23
1
3
5
7
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11
13
15
17
19
21
23
23
2
4
6
8
10
12
14
16
18
20
22
24
24
PORTS 1-20
PORTS 21-24
5G / 2.5G/1G/100
1000 LINK
ACT
100 LINK
ACT
5G/2.5G/1G LINK
ACT
100 LINK
ACT
PD ON
PD ERR
MAX CURRENT
1
3
5
7
9
11
13
15
17
19
21
23
23
23
2
4
6
8
10
12
14
16
18
20
22
22
24
24
PORTS 1-20
PORTS 21-24
24
5G / 2.5G/1G/100
1000 LINK
ACT
100 LINK
ACT
5G/2.5G/1G LINK
ACT
100 LINK
ACT
PD ON
PD ERR
MAX CURRENT
1
3
5
7
9
11
13
15
17
19
21
23
23
21
23
2
4
6
8
10
12
14
16
18
20
22
24
24
PORTS 1-20
PORTS 21-24
5G / 2.5G/1G/100
1000 LINK
ACT
100 LINK
ACT
5G/2.5G/1G LINK
ACT
100 LINK
ACT
PD ON
PD ERR
MAX CURRENT
1
3
5
7
9
11
13
15
17
19
21
23
21
23
23
2
4
6
8
10
12
14
16
18
20
22
22
24
24
PORTS 1-20
PORTS 21-24
24
5G / 2.5G/1G/100
1000 LINK
ACT
100 LINK
ACT
5G/2.5G/1G LINK
ACT
100 LINK
ACT
PD ON
PD ERR
MAX CURRENT
1
3
5
7
9
11
13
15
17
19
21
21
23
23
23
2
4
6
8
10
12
14
16
18
20
22
22
24
24
PORTS 1-20
PORTS 21-24
5G / 2.5G/1G/100
1000 LINK
ACT
100 LINK
ACT
5G/2.5G/1G LINK
ACT
100 LINK
ACT
PD ON
PD ERR
MAX CURRENT
Switches
25
SFP+
27/S1
CONSOLE
CLASS 1
LASER PRODUCT
26
10G
/
1G
28/S2
25
SFP+
27/S1
CONSOLE
CLASS 1
LASER PRODUCT
26
10G
/
1G
28/S2
25
SFP+
27/S1
CONSOLE
CLASS 1
LASER PRODUCT
10G
/
1G
26
28/S2
25
SFP+
27/S1
CONSOLE
CLASS 1
LASER PRODUCT
10G
/
1G
26
28/S2
25
SFP+
27/S1
CONSOLE
CLASS 1
LASER PRODUCT
26
10G
/
1G
28/S2
25
SFP+
27/S1
CONSOLE
CLASS 1
LASER PRODUCT
26
10G
/
1G
28/S2
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