Datasheet

1-21
PA-4E1G Serial Port Adapter Installation and Configuration
OL-3065-05
Chapter 1 Overview
Identifying Interface Addresses
Cisco 7000 Series Routers VIP Interface Addresses
In Cisco 7000 series routers, port adapters are installed on a versatile interface processor (VIP), which
installs in interface processor slots 0 through 4 (depending on the number of slots in the router). The port
adapter can be installed in either bay (port adapter slot 0 or 1) on the VIP. See Figure 1-8, Figure 1-9,
and Figure 1-10
The interface address for the VIP is composed of a three-part number in the format
interface-processor-slot-number/port-adapter-slot-number/interface-port-number. See Table 1-5.
The first number identifies the slot in which the VIP is installed (slot 0 through 4, depending on the
number of slots in the router).
The second number identifies which bay on the VIP the port adapter is installed (0 or 1). The bays are
numbered from left to right on the VIP.
The third number identifies the physical port number (interface port number) on the port adapter. The
port numbers always begin at 0 and are numbered from left to right. The number of additional ports
depends on the number of ports on the port adapter. The PA-4E1G is a four-port port adapter, therefore
the port can be 0 through 3.
For example, if the four-port PA-4E1G is installed in a VIP in interface processor slot 3, port adapter
slot 1, the interface addresses would be 3/1/0, 3/1/1. 3/1/2, and 3/1/3 (interface processor slot 3, port
adapter slot 1, and interfaces 0,1, 2, and 3).
Note Although the processor slots in the 7-slot Cisco 7000 are vertically oriented and those in the 5-slot
Cisco 7010 are horizontally oriented, all Cisco 7000 series routers use the same method for processor
slot and interface port numbering.
Cisco 7304 PCI Port
Adapter Carrier Card in
Cisco 7304 routers
Module-slot-number/interface-port-number Module slot—2 through 5
Interface port—0 through 3
3/0
Cisco 7401ASR routers Port-adapter-slot-number/interface-port-number Port adapter slot—always 1
Interface port—0 through 3
1/0
VIP in Cisco 7000 series or
Cisco 7500 series routers
Interface-processor-slot-number/port-adapter-slot-
number/interface-port-number
Interface processor slot—0
through 12 (depends on the
number of slots in the
router)
Port adapter slot—0 or 1
Interface port—0 through 3
3/1/0
1. Port adapter slot 0 is reserved for the Fast Ethernet port on the I/O controller (if present).
Table 1-5 Identifying Interface Addresses (continued)
Platform Interface Address Format Numbers Syntax