Assigning The Ml-Series Card Pos Ports To The Spr Interface - Cisco ONS 15454 SDH Configuration Manual

Assigning the ML-Series Card POS Ports to the SPR Interface

Assigning the ML-Series Card POS Ports to the SPR Interface
The SPR interface is the routed interface. Do not enable Layer 3 addresses or assign bridge groups on
Caution
the POS interfaces assigned to the SPR interface.
When traffic coming in on an SPR interface needs to be policed, the same input service policy needs to
Caution
be applied to both POS ports that are part of the SPR interface.
The POS ports require LEX encapsulation to be used in Cisco proprietary RPR. The first step of
configuration is to set the encapsulation of POS 0 and POS 1 ports to LEX.
Each of the ML-Series card's two POS ports must also be assigned to the SPR interface. To configure
LEX encapsulation and assign the POS interfaces on the ML-Series card to the SPR, perform the
following procedure, beginning in global configuration mode:
Command
Step 1
Router(config)# interface pos 0
Step 2
Router(config-if)# encapsulation lex
Step 3 (
Router(config-if)# spr-intf-id
shared-packet-ring-number
Step 4
Router(config-if)# carrier-delay msec
milliseconds
Step 5
Router(config-if)# pos trigger defect
ber_sd-b3
Step 6
Router(config-if)# no shutdown
Cisco ONS 15454 and Cisco ONS 15454 SDH Ethernet Card Software Feature and Configuration Guide, R8.0
17-14
Chapter 17 Configuring Cisco Proprietary Resilient Packet Ring
Purpose
Enters the interface configuration mode to configure the
first POS interface that you want to assign to the SPR.
Sets POS interface encapsulation as LEX (default).
Cisco proprietary RPR on the ML-Series card requires
LEX encapsulation.
Assigns the POS interface to the SPR interface. The
shared packet ring number must be 1, which is the only
shared packet ring number that you can assign to the SPR
interface.
(Optional) Sets the carrier delay time. The default setting
is 200 msec, which is optimum for SONET/SDH
protected circuits.
The default unit of time for setting the carrier
Note
delay is seconds. The msec command resets the
time unit to milliseconds.
(Optional) Configures a trigger to bring down the POS
interface when the SONET/SDH bit error rate exceeds
the threshold set for the signal degrade alarm. Bringing
the POS interface down initiates the Cisco proprietary
RPR wrap.
This command is recommended for all Cisco proprietary
RPR POS interfaces, since excessive SONET/SDH bit
errors can cause packet loss on Cisco proprietary RPR
traffic.
This command should not be used when a
Note
Cisco ONS 15310 is part of the ring. It might
cause inconsistent Cisco proprietary RPR
wrapping.
Enables the POS port.