3Com manual Configuring Switch 2000 TR in Stack, Head Unit, Cascade Connections

Configuring Switch 2000 TR in Stack 3-3

Configuring Switch 2000 TR in Stack

Head Unit

One of the unique characteristics of the Switch 2000 TR is its ability to be part of a stack. When installed as members of a stack, up to 6 Switch 2000 TRs form the equivalent of a switching chassis, managed using the same IP address. All traffic, management, moni- toring, and configuration tasks and inquiries operate through the high-speed cascade interface located at the rear of each unit. See Figure 3-1.

				LINK STATUS						SuperStack II
										Switch 2000 TR
1x	6x
		1	2	3	4	5	6
		1	2	3	4	5	6
7x	12x	7	8	9	10	11 12		O	C
		7	8	9	10	11 12		O	C	ENTER
				LINK STATUS						SuperStack II
										Switch 2000 TR
1x	6x
		1	2	3	4	5	6
		1	2	3	4	5	6
7x	12x	7	8	9	10	11 12		O	C
		7	8	9	10	11 12		O	C	ENTER
				LINK STATUS						SuperStack II
										Switch 2000 TR
1x	6x
		1	2	3	4	5	6
		1	2	3	4	5	6
7x	12x	7	8	9	10	11 12		O	C
		7	8	9	10	11 12		O	C	ENTER
				LINK STATUS						SuperStack II
										Switch 2000 TR
1x	6x
		1	2	3	4	5	6
		1	2	3	4	5	6
7x	12x	7	8	9	10	11 12		O	C
		7	8	9	10	11 12		O	C	ENTER
				LINK STATUS						SuperStack II
										Switch 2000 TR
1x	6x
		1	2	3	4	5	6
		1	2	3	4	5	6
7x	12x	7	8	9	10	11 12		O	C
		7	8	9	10	11 12		O	C	ENTER
				LINK STATUS						SuperStack II
										Switch 2000 TR
1x	6x
		1	2	3	4	5	6
		1	2	3	4	5	6
7x	12x	7	8	9	10	11 12		O	C
		7	8	9	10	11 12		O	C	ENTER

Unit ID #

6

5

4

3

2

1 Head Unit

Configuration rules for the Switch 2000 TR are sim- ple:

■The head unit must have the lowest Unit ID number in the stack.

■The head unit should be at the bottom of the stack.

■It is recommended that each consecutive unit have sequential Unit IDs.

■To ensure redundancy each consecutive unit should have the same IP address setting as the head unit.

Figure 3-1Switch 2000 TR in stack setting.

Cascade Connections

Cascade connectors must attach from the top con- nector of bottom unit to the bottom connector of next highest unit, up through the stack. See Figure 3-2.

Figure 3-2Switch 2000 TR Cascade Connections