17
PA-2JT2 6.3-MHz Serial Port Adapter Installation and Configuration
OL-3587-01
VIP2 and the JT2 Port Adapter
Note
Although the processor slots in the seven-slot Cisco 7000 and Cisco 7507 and 13-slot Cisco 7513 are
vertically oriented and those in the five-slot Cisco 7010 and Cisco 7505 are horizontally oriented, all
models use the same method for slot and port numbering.
In the router, physical port addresses specify the actual physical location of each interface port on the
router interface processor end. (See .) This address is composed of a three-part number in the format
interface processor slot
number/port adapter number/interface port number
, as follows:
•
The first number identifies the interface processor slot in which the JT2-equipped VIP2 is installed
(as shown in the example system in ).
•
The second number identifies the physical port adapter number on the VIP2, and is either 0 or 1.
•
The third number identifies the interface ports on the JT2 port adapter, which are always numbered
as 0 and 1. (Each individual interface port has two BNC connections, labeled RX and TX.)
Interface ports on the JT2-equipped VIP2 maintain the same addresses regardless of whether other
interface processors are installed or removed. However, when you move a VIP2 to a different slot, the
first number in the address changes to reflect the new interface processor slot number.
shows the port adapter slots and interface ports of a sample Cisco 7505 system. The JT2 interface
addresses on a JT2 port adapter in the first port adapter slot in interface processor slot 3, would be 3/0/0
and 3/0/1, from left to right. The JT2 interfaces on a JT2 port adapter in port adapter slot 1 would be
numbered 3/1/0 and 3/1/1, from left to right.
Note
If you remove the JT2-equipped VIP2 from interface processor slot 3 and install it in interface processor
slot 2, the addresses of those same ports become 2/0/0 and 2/0/1, respectively, and 2/1/0 and 2/1/1,
respectively.
Figure 12
JT2 Interface Port Address Example (Cisco 7505 Shown)
You can identify interface ports by physically checking the slot/port-adapter/interface port location on
the back of the router or by using
show
commands to display information about a specific interface or
all interfaces in the router.
H9373
Slot 0
Slot 1
Slot 2
Slot 3
Interface
processor
slots
EJE
C
T
SL
O
T 0
SL
O
T 1
N
O
R
M
AL
C
PU
H
AL
T
R
ES
ET
C
O
N
SO
LE
ROUTE SWITCH PROCESSOR
JT2 port adapter
(port addresses 3/0/0 and 3/0/1)
JT2 port adapter
(port addresses 3/1/0 and 3/1/1)
ENABLED
AIS
RAI
LO
S
AIS
RAI
LO
S
JT2
TX0
RX0
TX1
RX1
ENABLED
AIS
RA
I
LO
S
AIS
RA
I
LO
S
JT2
TX0
RX0
TX1
RX1
