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4-2
PA-POS-1OC3 Single-Port Port Adapter Installation and Configuration Guide
OL-6514-04
Chapter 4 Configuring the PA-POS-1OC3
Configuring the Interfaces
To configure the new interfaces, proceed to the “Configuring the Interfaces” section on page 4-2.
Configuring the Interfaces
After you verify that the new PA-POS-1OC3 is installed correctly (the ENABLED LED goes on), use
the privileged-level configure command to configure the new interfaces. Have the following information
available:
• IP addresses, if you plan to configure the interface for IP routing
• MTU size
• Framing mode
• Transmit clock source
• Loopback modes (if testing is required)
If you installed a new PA-POS-1OC3 or if you want to change the configuration of an existing interface,
you must enter configuration mode to configure the new interfaces. If you replaced a PA-POS-1OC3 that
was previously configured, the system recognizes the new interfaces and brings each of them up in their
existing configurations.
For a summary of the configuration options available and instructions for configuring the interfaces on
a PA-POS-1OC3, refer to the appropriate configuration publications listed in the “Related
Documentation” section on page viii.
You execute configuration commands from the privileged level of the EXEC command interpreter, which
usually requires password access. (See the “Using the EXEC Command Interpreter” section on page 4-1
for an explanation of the privileged level of the EXEC.) Contact your system administrator, if necessary,
to obtain password access.
On power-up, the OC-3 interface on a new PA-POS-1OC3 is shut down. To enable the interfaces, you
must enter the no shutdown command in configuration mode. (See “Performing a Basic Configuration”
section on page 4-6.) When the OC-3 interface is enabled (taken out of shutdown) with no additional
arguments, the default interface configuration file parameters look like those in Table 4-1.
Table 4-1 PA-POS-1OC3 Configuration Default Values
Parameter
1
1. These default parameters apply to the PA-POS-1OC3 in all supported platforms.
Configuration Commands Default Value
MTU mtu bytes (no mtu bytes) 4470 bytes
Framing pos framing sdh (no pos framing sdh) SONET framing
Loopback internal loop internal (no loop internal) No internal loopback
Loopback line loop line (no loop line) No line loopback
Transmit clocking source clock source internal
clock source line
Loop timing
(clock source internal)
Cyclic redundancy checks crc 16
crc 32
crc 16
SONET payload scrambling pos scramble-atm
(no pos scramble-atm)
No scrambling
(no pos scramble-atm)