HP XC System Software Hardware Preparation Guide Version 3.1

HP workstations connected to the Root Administration Switch must be connected to the next
lower-numbered contiguous set of ports immediately below the nodes that have console management
ports.
For example, if nodes with console management ports are connected to ports 42 through 36 on the Root
Administration Switch, the console ports are connected to ports 42 through 36 on the Console Switch.
Workstations must be connected starting at port 35 and lower to the Root Administration Switch; the
corresponding ports on the Console Switch are empty.
2.3.4 Super Root Switch
Figure 2-4 shows the Super Root Switch, which is a ProCurve 2848. A Super Root switch configuration
supports the use of trunking to expand the bandwidth of the connection between the Root Administration
Switch and the Super Root Switch. The connection can be as simple as one wire and as complex as eight,
which is the largest trunk size the ProCurve 2848 switch currently supports. See “Trunking and Switch
Choices” (page 19) for more information about trunking and the Super Root Switch.
You must configure trunks on both switches before plugging in the cables between the switches. Otherwise,
a loop is created between the two switches.
Figure 2-4 illustrates a ProCurve 2848 Super Root Switch.
Figure 2-4 ProCurve 2848 Super Root Switch
LED
Mode
Cl
ea r
Re
se t
4
5 43
4442
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
Spd mode : of f = 1 0 M bps f la s h = 10 0 Mbps on = 10 0 0 Mbps
1 15 17
16
18
31
32
33
34
Po w er
Fa
ul t
hp procurve
switch
2848
J4 904 A
Us
e o nly one ( T o r M) fo r e a ch G igabit port
!
1
2
3
Spd
Ln k
Ac
t
FD
x
10/100/1000 Base-TX RJ-45 Ports
Ports 1, 3, 5, and 7
are the first four ports
located on the top row
Gigabit
Ethernet Ports
48
47
T
M
T
M
46
45
T
M
T
M
RPS
Fan
Test
Ports 2, 4, 6, and 8
are the first four ports
located on the bottom row
Table 2-2 shows how ports are allocated for large-scale systems with multiple regions.
Table 2-2 Trunking Port Use on Large-Scale Systems with Multiple Regions
Ports Used on Root Administration SwitchPorts Used on Super Root SwitchTrunking Type
4-wire Trunking:
43 through 461 through 4Region 1
43 through 465 through 8Region 2
43 through 4613 through 16Region 3
2-wire Trunking:
45 and 461 and 2Region 1
45 and 463 and 4Region 2
45 and 465 and 6Region 3
45 and 467 and 8Region 4
45 and 469 and 10Region 5
45 and 4613 and 14Region 6
2.3.5 Root Administration Switch
The Root Administration Switch for the Administration Network of an HP XC system can be either a
ProCurve 2848 switch or a ProCurve 2824 switch for small configurations.
If you are using a ProCurve 2848 switch as the switch at the center of the Administration Network, use
Figure 2-5 to make the appropriate port connections. In the figure, white ports should not have connections,
black ports can have connections, and ports with numbered callouts are used for specific purposes, described
after the figure. Gray-colored ports are reserved for future use.
2.3 Switches 23