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Multilink PPP Link Fragmentation and Interleaving over Frame Relay

Written by Rene Molenaar on . Posted in Quality of Service (QOS)

Scenario:

As one of the network engineers for a large frame-relay provider in the US you are asked by your boss to configure QoS. One of your customers insists there will be authentication in the future for his frame-relay connection. You don't have to configure authentication right now but you remember you can do this by using PPP on a frame-relay link. You do have to setup QoS right now though...

Goal:

  • All IP addresses have been preconfigured for you.
  • Configure Multilink PPP on the frame-relay link between router Kos and Quall.
  • Classify and mark TELNET and HTTP traffic on router Kos and Quall. Use DSCP value AF21 for TELNET traffic and AF31 for HTTP traffic.
  • Create a policy on router Kos and Quall with the following configuration:
  • TELNET traffic should have 64Kbps of priority bandwidth.
  • HTTP traffic should have 10% of the remaining bandwidth.
  • Enable Link fragmentation and interleaving and ensure there is a delay of 20ms on the frame-relay link.

IOS:

c3640-jk9s-mz.124-16.bin

Topology:

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Multilink PPP LFI over Frame-Relay

Video Solution:

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Comments (2)

  • avatar
    SteveOcchO86

    Using CBWFQ you can classify the traffic and police it as needed. To configure LFI on the Multilink interface this link should help

    http://www.cisco.com/en/US/docs/ios/12_2/qos/configuration/guide/qcflfi.html

  • avatar
    SteveOcchO86

    Frame-relay multilink configuration

    http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/17s_mfr.html