5Two-Tier Example

Figure 5 shows a logical topology for a 2-tier fully meshed MLAG, offering full redundancy across all four MLAG peers. Six Dell N3024s are used for the example, however the same principals apply and the same commands can be used on the N2000 and N4000 series switches.

A.

B.

Peer-Link

D.

Peer-Link

= MLAG

C.

2 tier

(2 layer, full mesh)

E.

F.

Figure 5

Logical topology of a 2-tier full mesh configuration

Figure 6 shows the physical layout of the same topology as it might appear in a rack, including cabling and attached hosts that need to communicate across the MLAG. The same color scheme is used for the cables in Figure 6 that was used to show logical connections in Figure 5.

Ports are denoted by the

A.

port # in parenthesis.

 

Example:

 

gigabitethernet 1/0/23

B.

is shown as (23)

 

C.

D.

E.

F.

 

 

 

 

 

(13-14)

 

 

 

(23)

 

 

1

3

5

7

9

11

13

15

17

19

21

LNK 23

ACT

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

Stack No.

2

 

 

 

 

 

 

 

 

 

 

 

 

LNK

ACT

 

2

4

6

8

10

12

14

16

18

20

22

24

COMBO P

1 SFP+

2

(1-2)

 

 

 

 

 

 

 

 

 

 

 

 

 

1

3

5

7

9

11

13

15

17

19

21

LNK 23

ACT

 

1

 

 

 

 

 

 

(14)

 

 

 

 

 

 

Stack No.

2

 

 

 

 

 

 

 

 

 

 

 

 

LNK

ACT

 

2

4

6

8

10

12

14

16

18

20

22

24

COMBO P

1 SFP+

2

(1-2)

 

 

 

 

(13)

 

 

 

 

 

 

(Te 1)

1

3

5

7

9

11

13

15

17

19

21

LNK 23

ACT

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

Stack No.

2

 

 

 

 

 

 

 

 

 

 

 

 

LNK

ACT

 

2

4

6

8

10

12

14

16

18

20

22

24

COMBO P

1 SFP+

2

 

 

 

 

 

 

 

 

 

 

 

 

 

(Te 1)

1

3

5

7

9

11

13

15

17

19

21

LNK 23

ACT

 

1

(1-2)

 

 

 

 

 

(14)

 

 

 

 

 

 

Stack No.

2

 

 

 

 

 

 

 

 

 

 

 

LNK

ACT

 

2

4

6

8

10

12

14

16

18

20

22

24

COMBO P

1 SFP+

2

(1-2)

 

 

 

 

 

(13)

 

 

 

 

 

 

(Te 1)

1

3

5

7

9

11

13

15

17

19

21

LNK 23

ACT

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

Stack No.

2

 

 

 

 

 

 

 

 

 

 

 

 

LNK

ACT

 

2

4

6

8

10

12

14

16

18

20

22

24

COMBO P

1 SFP+

2

 

 

 

 

(13-14)

 

 

 

 

 

 

(Te 1)

1

3

5

7

9

11

13

15

17

19

21

LNK 23

ACT

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

Stack No.

2

 

 

 

 

 

 

 

 

 

 

 

 

LNK

ACT

 

2

4

6

8

10

12

14

16

18

20

22

24

COMBO P

1 SFP+

2

 

 

 

 

 

 

 

 

 

 

 

(24)

 

 

Server

PC

Figure 6 Physical cabling of a 2-tier full mesh configuration

13 Using MLAG in Dell Networks

.

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Image 13
Dell N2048, N3024 manual Two-Tier Example, Logical topology of a 2-tier full mesh configuration