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Cisco ONS 15310-CL and Cisco ONS 15310-MA Ethernet Card Software Feature and Configuration Guide R8.5
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Chapter 5 Configuring POS on the ML-Series Card
Configuring the POS Interface
Configuring POS Interface Encapsulation Type Under GFP-F Framing
To configure the encapsulation type for a ML-Series card, perform the following step s beginning in
global configuration mode:
Step 3 Router(config-if)# [no] pos mode gfp
[fcs-disabled]
Sets the framing mode employed by the ONS
Ethernet card for framing and encapsulating data
packets onto the SONET transport layer. Valid
framing modes are:
HDLC—A common mechanism employed in
framing data packets for SONET. HDLC is
not a keyword choice in the command. The no
form of the command sets the framing mode
to Cisco HDLC.
GFP (default)—The ML-Series card supports
the frame mapped version of generic framing
procedure (GFP-F).
GFP-F with a 32-bit CRC, also referred to as
frame check sequence (FCS), is enabled by
default. The optional FCS-disabled keyword
disables the GFP-F 32-bit FCS.
The FCS-disabled keyword is not available when
setting the framing mode to Cisco HDLC.
Note CRC-under-HDLC framing is restricted to
a 32-bit size and cannot be disabled.
Note The GFP-F FCS is compliant with ITU-T
G.7041/Y.1303
Step 4 Router(config-if)# no shutdown Restarts the shutdown interface.
Step 5 Router(config)# end Returns to privileged EXEC mode.
Step 6 Router# copy running-config startup-config (Optional) Saves configuration changes to
NVRAM.
Command Purpose
Command Purpose
Step 1 Router(config)# interface pos
number
Activates interface configuration mode to
configure the POS interface.
Step 2 Router(config-if)# shutdown Manually shuts down the interface. Encapsulation
and framing mode changes on POS ports are
allowed only when the interface is shut down
(ADMIN_DOWN).