Cisco Cisco IOS Software Release 12.4(9)T

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Access List-Based RBSCP
  How to Configure Access List-Based RBSCP
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Cisco IOS Release 12.4(9)T
How to Configure Access List-Based RBSCP
Perform the task in this section in order to use the TCP ACK splitting feature of RBSCP, based on an 
access list.
Use RBSCP Selectively by Applying an Access List
This task illustrates how to apply the feature to an interface, and presumes that an access list is already 
configured. Perform this task by applying the access list on the router interface that is facing the internal 
network, not the satellite network.
Tip
The feature will try to process all the TCP flows as filtered by the access list. Try to make the access list 
applied to RBSCP as precise as possible to avoid unnecessary processing.
Caution
Plan your network carefully so that no more than one Cisco IOS router in a given routing path has this 
feature enabled. You do not want to recursively ACK split traffic.
SUMMARY STEPS
1.
enable
2.
configure terminal
3.
interface type number
4.
ip rbscp ack-split size {access-list-name access-list-number} out
5.
Although it is not required, you should repeat this task on the router that is on the other side of the 
satellite, on the outgoing interface facing the network, not the satellite. Use a different access list. 
DETAILED STEPS
Command or Action
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
interface
 type number
Example:
Router(config)# interface ethernet 1
Specifies an interface. 
Specify an interface that is facing your internal 
network, opposite the satellite network.