4-12
Cisco ONS 15454 SONET/SDH ML-Series Multilayer Ethernet Card Software Feature and Configuration Guide, R4.0
78-15224-02
Chapter 4 Configuring Interfaces
Configuring the ML-Series POS Interfaces
Configuring the ML-Series POS Interfaces
To configure the POS interface, perform the following procedure, beginning in global configuration
mode. Encapsulation changes on POS ports are allowed only when the interface is in a manual shutdown
(ADMIN_DOWN):
Note The POS interface is not present until a SONET STS or SDH STM circuit is created.
Command Purpose
Step 1
Router(config)# interface pos
number
Activates interface configuration mode to
configure the POS interface. The POS interface is
created upon the creation of a SONET/SDH
circuit.
Step 2
Router#(config-if)# {ip address
ip-address
subnet-mask
| bridge-group
bridge-group-number}
Sets the IP address and subnet mask.
or
Assigns a network interface to a bridge group.
Step 3
Router#(config-if)#shutdown
Manually shuts down the interface. Encapsulation
changes on POS ports are allowed only when the
interface is shutdown (ADMIN_DOWN).
Step 4
Router#(config-if)# encapsulation
type
Sets the encapsulation type. Valid values are:
• hdlc—Cisco HDLC
• lex—LAN extension, special encapsulation
for use with Cisco ONS G-Series Ethernet
line cards
• ppp—Point-to-Point Protocol
Step 5
Router#(config-if)# pos flag c2
byte value
(Optional) Sets the C2 byte value. Valid choices
are 0 to 255 (decimal). The default value is 0x01
(hex) for LEX.
Step 6
Router#(config-if)#no shutdown
Restarts the shutdown interface.
Step 7
Router#(config)# end
Returns to privileged EXEC mode.
Step 8
Router# copy running-config startup-config
(Optional) Saves configuration changes to
NVRAM.