Frame Relay DE Marking


Scenario:

You are the owner of a small ISP company located in The Netherlands. Most of the equipment you have running is fairly old and you have multiple different serial links in use. Bandwidth is an issue and since you don’t have the budget to replace any links you are looking for a cheaper solution…think you can compress things?

Goal:

  • All IP addresses have been preconfigured for you.
  • Configure Frame Relay encapsulation between router Chop and Slice.
  • Configure a loopback0 interface with IP address 1.1.1.1 /24 on router Frank.
  • Configure OSPF on all routers, ensure you have full connectivity.
  • Configure DE marking on router Chop. All IP packets from network 1.1.1.0 /24 should be marked as Discard Eligible when they are sent to router Slice.

IOS:

c3640-jk9s-mz.124-16.bin

Topology:

Configuration Files

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Written by René Molenaar - CCIE #41726

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About the Author: Rene Molenaar

René - CCIE #41726 is the creator of GNS3Vault.com where he shares CCNA, CCNP and CCIE R&S labs. He also blogs about networking on http://networklessons.com

1 Comment

  1. CHOP configuration. In my config it’s R1.

    R1#show run
    Building configuration…

    Current configuration : 1894 bytes
    !
    version 12.4
    service timestamps debug datetime msec
    service timestamps log datetime msec
    no service password-encryption
    !
    hostname R1
    !
    boot-start-marker
    boot-end-marker
    !
    !
    no aaa new-model
    memory-size iomem 5
    no ip icmp rate-limit unreachable
    ip cef
    !
    no ip domain lookup
    !
    frame-relay switching
    multilink bundle-name authenticated
    !
    archive
    log config
    hidekeys
    !
    ip tcp synwait-time 5
    ip ssh version 1
    !
    class-map match-all FRANK-IN
    match access-group name FRANK-IN
    !
    !
    policy-map SHAPE
    class FRANK-IN
    set fr-de
    !
    !
    interface FastEthernet0/0
    ip address 192.168.12.2 255.255.255.0
    ip nbar protocol-discovery
    duplex auto
    speed auto
    !
    interface FastEthernet0/1
    no ip address
    shutdown
    duplex auto
    speed auto
    !
    interface Serial1/0
    ip address 192.168.23.2 255.255.255.0
    encapsulation frame-relay
    ip ospf network point-to-point
    serial restart-delay 0
    frame-relay map ip 192.168.23.1 103 broadcast
    frame-relay interface-dlci 103
    frame-relay intf-type dce
    service-policy output SHAPE
    !
    interface Serial1/1
    no ip address
    shutdown
    serial restart-delay 0
    !
    interface Serial1/2
    no ip address
    shutdown
    serial restart-delay 0
    !
    interface Serial1/3
    no ip address
    shutdown
    serial restart-delay 0
    !
    router ospf 1
    log-adjacency-changes
    network 0.0.0.0 255.255.255.255 area 0
    !
    ip forward-protocol nd
    !
    !
    no ip http server
    no ip http secure-server
    !
    ip access-list extended FRANK-IN
    permit ip any any
    ip access-list extended HTTP
    permit tcp any any eq www
    ip access-list extended ICMP
    permit icmp any any
    ip access-list extended RTP
    permit udp any any range 16384 32767
    !
    no cdp log mismatch duplex
    !
    !
    !
    !
    !
    !
    control-plane
    !
    line con 0
    exec-timeout 0 0
    privilege level 15
    logging synchronous
    line aux 0
    exec-timeout 0 0
    privilege level 15
    logging synchronous
    line vty 0 4
    login
    !
    !
    end

    R1#

    R1#show policy-map int s1/0

    Serial1/0

    Service-policy output: SHAPE

    Class-map: FRANK-IN (match-all)
    285 packets, 28640 bytes
    5 minute offered rate 0 bps, drop rate 0 bps
    Match: access-group name FRANK-IN
    QoS Set
    fr-de
    Packets marked 285

    Class-map: class-default (match-any)
    23 packets, 331 bytes
    5 minute offered rate 0 bps, drop rate 0 bps
    Match: any

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