SERVSWITCH™ MULTI

6.1 Placing the ServSwitch Multi

NOTE

Here and elsewhere in this chapter you will see diagrams in which ServSwitch Multis units are identified as “Switch 0.” You will notice that all such Switches have Receive Cards installed in them, but no Transmit Cards. Do not set the address of any unit with a Transmit Card installed in it to zero; your system will not work. The address zero is reserved as the operating address for all ServSwitch Multis in which no Transmit Cards are installed—unless a firmware upgrade has to be done (see Section 8.13 and the entry for “CHASSIS=n” in Section 8.15).

There are two basic types of expansion configurations for the ServSwitch Multi: the “star” and the “daisychain.” In the star configuration, additional Switches are all attached to a central “hub” ServSwitch Multi, as shown in Figure 6-2. In the daisychain configuration, additional Switches are attached in a line: The first Switch is connected to the second, which in turn is connected to the third, and so on, as shown in Figure 6-3. (Note that in both Figure 6-2 and Figure 6-3, the users on Switch 0 can access any computer attached to any of the four Switches in the system.) The star configuration is the more common of these two approaches and is the recommended setup for most applications.

 

 

 

 

U

 

 

 

X

 

 

 

 

U

 

 

 

 

 

 

 

 

S

 

 

 

M

 

 

 

 

S

 

 

 

 

 

 

 

 

R

 

 

 

T

 

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SWITCH 3

 

 

 

 

X

 

 

 

U

 

 

U

 

 

 

U

 

 

 

 

 

 

M

 

 

 

S

 

 

S

 

 

 

S

 

 

 

 

 

 

T

 

 

 

R

 

 

R

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SWITCH 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

 

 

R

 

U

 

 

C

 

R

 

 

 

 

 

 

 

C

 

 

C

 

S

 

 

P

 

C

 

 

 

 

 

 

 

V

 

 

V

 

R

 

 

U

 

V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X

 

 

 

U

 

 

U

 

 

 

U

 

 

 

 

 

 

M

 

 

 

S

 

 

S

 

 

 

S

 

 

 

 

 

 

T

 

 

 

R

 

 

R

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SWITCH 1

SWITCH 0

Figure 6-2. A sample “star” configuration.

C P U

X

M

T

C P U

C P U

SWITCH 3

C P U

X

M

T

C P U

SWITCH 2

X

M

T

C P U

SWITCH 1

C P U

R C V

U S R

C P U

SWITCH 0

Figure 6-3. A sample “daisychain.”

54

Page 55
Image 55
Black Box KV150A-R2 manual Placing the ServSwitch Multi, A sample star configuration