Specifications

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Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5 Software Configuration Guide, Cisco IOS Release 15.1(3)MR
OL-26895-01
Chapter 18 Configuring MLPPP Backhaul
Configuring PFC and ACFC
Protocol-Field-Compression (PFC) and Address-and-Control-Field-Compression (AFC) are PPP
compression methods defined in RFCs 1661 and 1662. PFC allows for compression of the PPP Protocol
field; ACFC allows for compression of the PPP Data Link Layer Address and Control fields.
Follow these steps to configure PFC and ACFC handling during PPP negotiation to be configured. By
default, PFC/ACFC handling is not enabled.
Note The recommended PFC and ACFC handling in the Cisco MWR 2941 router is: acfc local request, acfc
remote apply, pfc local request, and pfc remote apply.
Configuring PFC
To configure PFC handling during PPP negotiation, follow these steps:
Step 4
Router(config-if)# ip address
address [subnet mask]
Example:
Router(config-if)# ip address
10.10.10.2 255.255.255.0
Assigns an IP address to the multilink interface.
• address— IP address.
• subnet mask—Network mask of IP address.
The example configures an IP address and subnet mask.
Step 5
exit
Example:
Router(config)# exit
Router#
Exits configuration mode.
Command Purpose
Command Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
Router(config-if)# ppp pfc local
{request | forbid}
Example:
Router(config-if)# ppp pfc local
request
Configures how the router handles PFC in its outbound configuration
requests, use the ppp pfc local command. The syntax is as follows:
• request—The PFC option is included in outbound configuration
requests.
• forbid—The PFC option is not sent in outbound configuration
requests, and requests from a remote peer to add the PFC option are
not accepted.
The example shows how to create a method for the router to manage PFC.