Cisco 3600 unwanted ISDN Calls from multicasts

Discussion in 'Cisco' started by Hajo Jonker, Dec 15, 2003.

  1. Hajo Jonker

    Hajo Jonker Guest

    Hi There, I do have a Cisco Router 3620 with a 8 port ISDN Interface Running
    IOS 12.2.20 IP (General Development)

    ones in a While we do get unwanted ISDN active just after multicasts from
    local Ethernet and ISDN Dialers

    the LAN interface is 192.168.20.180/255.255.255.0
    and the dialers 172.31.30.1/255.255.255.252
    172.31.31.1/255.255.255.252

    strange enough just after the logging entry (DEBUG IP PACKET) we do get a
    %ISDN-6-LAYER2UP, we do have a Pont-to Multipont configuartion on the
    central site an just a normal ISDN-2 on the Client site

    we do use Callback and we did use DHCP relay but skipped this configuration
    and we are running a local DHCP pool on the router now.

    Config:
    !
    !version 12.1.18 IP GD 32MB Ram 8MB Flash
    service config
    no service single-slot-reload-enable
    no service pad
    service timestamps debug datetime msec localtime show-timezone
    service timestamps log datetime msec localtime show-timezone
    service password-encryption
    !
    hostname ??????
    !
    logging buffered 400000 debugging
    aaa new-model
    aaa authentication banner ^Welcome to Cisco 3620
    ^C
    aaa authentication login default local
    aaa authentication ppp default local
    enable password ??????
    !
    username Thuis11 password ?????
    username Thuis22 password ?????
    !
    username root password ?????
    username thuis password ??????
    !
    !
    !
    !
    memory-size iomem 15
    clock timezone gmt 1
    clock summer-time CET recurring 4 Sun Mar 2:00 4 Sun Oct 2:00
    ip subnet-zero
    no ip domain-lookup
    !
    isdn switch-type basic-net3
    isdn tei-negotiation first-call
    !
    !
    !
    interface BRI0/0
    description $$$ ISDN Verbinding naar Thuis11 tm Thuis22 $$$
    no ip address
    encapsulation ppp
    no ip route-cache
    no ip split-horizon
    no ip mroute-cache
    ! Dialer pool-member NUMMER geeft aan voor welke Dialer NUMMERS de BRI
    gebrukt mag worden
    dialer pool-member 1
    dialer pool-member 2
    isdn switch-type basic-net3
    isdn tei-negotiation first-call
    no cdp enable
    ppp authentication chap callin
    no shutdown
    !
    interface BRI0/1
    description $$$ ISDN Verbinding naar Thuis11 tm Thuis 22 $$$
    no ip address
    encapsulation ppp
    no ip route-cache
    no ip split-horizon
    no ip mroute-cache
    ! Dialer pool-member NUMMER geeft aan voor welke Dialer NUMMERS de BRI
    gebrukt mag worden
    dialer pool-member 1
    dialer pool-member 2
    isdn switch-type basic-net3
    isdn tei-negotiation first-call
    no cdp enable
    ppp authentication chap callin
    no shutdown
    !
    interface BRI0/2
    description $$$ ISDN Verbinding naar Thuis11 tm Thuis22 $$$
    no ip address
    encapsulation ppp
    no ip route-cache
    no ip split-horizon
    no ip mroute-cache
    ! Dialer pool-member NUMMER geeft aan voor welke Dialer NUMMERS de BRI
    gebrukt mag worden
    dialer pool-member 1
    dialer pool-member 2
    isdn switch-type basic-net3
    isdn tei-negotiation first-call
    no cdp enable
    ppp authentication chap callin
    no shutdown
    !
    interface BRI0/3
    description $$$ ISDN Verbinding naar $$$
    no ip address
    encapsulation ppp
    no ip route-cache
    no ip mroute-cache
    isdn switch-type basic-net3
    isdn tei-negotiation first-call
    no cdp enable
    ppp authentication chap callin
    shutdown
    !
    interface BRI0/4
    description $$$ ISDN Verbinding naar $$$
    no ip address
    encapsulation ppp
    no ip route-cache
    no ip mroute-cache
    isdn switch-type basic-net3
    isdn tei-negotiation first-call
    no cdp enable
    ppp authentication chap callin
    shutdown
    !
    interface BRI0/5
    description $$$ ISDN Verbinding naar $$$
    no ip address
    encapsulation ppp
    no ip route-cache
    no ip mroute-cache
    isdn switch-type basic-net3
    isdn tei-negotiation first-call
    no cdp enable
    ppp authentication chap callin
    shutdown
    !
    interface BRI0/6
    description $$$ ISDN Verbinding naar $$$
    no ip address
    encapsulation ppp
    no ip route-cache
    no ip mroute-cache
    isdn switch-type basic-net3
    isdn tei-negotiation first-call
    no cdp enable
    ppp authentication chap callin
    shutdown
    !
    interface BRI0/7
    description $$$ ISDN Verbinding naar $$$
    no ip address
    encapsulation ppp
    no ip route-cache
    no ip mroute-cache
    isdn switch-type basic-net3
    isdn tei-negotiation first-call
    no cdp enable
    ppp authentication chap callin
    shutdown
    !
    interface Ethernet1/0
    description connected to EthernetLAN
    ip address 192.168.20.180 255.255.255.0
    no ip mroute-cache
    half-duplex
    no cdp enable
    no shutdown
    !
    interface Dialer1
    description $$$ ISDN Verbinding naar Thuis11 $$$
    ! Tussen LAN met .1
    ip address 172.31.30.1 255.255.255.252
    encapsulation ppp
    no ip split-horizon
    dialer pool 1
    ! Remote Router Naam
    dialer remote-name Thuis11
    ! Idle Time 121 sec
    dialer idle-timeout 121
    ! ISDN nummer Thuiswerker
    dialer string ???????
    ! ISDN Nummer waarop terggebeld wordt
    dialer caller ????????? callback
    !
    dialer hold-queue 10
    dialer-group 1
    pulse-time 0
    no cdp enable
    ppp authentication chap
    ppp chap hostname ??????
    ppp chap password ?????
    no shutdown
    !
    interface Dialer2
    description $$$ ISDN Verbinding naar Thuis22 $$$
    ! Tussen LAN met .1
    ip address 172.31.31.1 255.255.255.252
    encapsulation ppp
    no ip split-horizon
    dialer pool 2
    ! Remote Router Naam
    dialer remote-name Thuis22
    ! Idle Time 121 sec
    dialer idle-timeout 121
    ! ISDN nummer Thuiswerker
    !dialer string ????????
    ! ISDN Nummer waarop terggebeld wordt
    !dialer caller ????????? callback
    !
    dialer hold-queue 10
    dialer-group 1
    pulse-time 0
    no cdp enable
    ppp authentication chap
    ppp chap hostname ?????
    ppp chap password ?????
    no shutdown
    !
    !
    ip classless
    ip route 192.168.30.0 255.255.255.0 Dialer1
    ip route 192.168.31.0 255.255.255.0 Dialer2
    !
    no ip http server
    !
    dialer-list 1 protocol ip permit
    no cdp run
    !
    line con 0
    exec-timeout 0 0
    password ??????
    line aux 0
    line vty 0 4
    password ??????
    !
    end

    LOOKS OKE isn't

    we do have a running callback but onwanted ISDN behavior on unwanted times


    Log from the central ISDn 3620:
    Dec 2 01:35:35.431 gmt: IP: s=192.168.20.180 (local), d=255.255.255.255
    (Ethern
    et1/0), len 50, sending broad/multicast
    Dec 2 01:35:35.435 gmt: IP: s=172.31.30.1 (local), d=255.255.255.255
    (Dialer1),
    len 50, sending broad/multicast
    Dec 2 01:35:35.435 gmt: IP: s=172.31.31.1 (local), d=255.255.255.255
    (Dialer2),
    len 50, sending broad/multicast
    Dec 2 01:35:35.435 gmt: IP: s=172.31.31.1 (local), d=255.255.255.255
    (Dialer2),
    len 50, encapsulation failed
    Dec 2 01:35:35.439 gmt: IP: s=172.31.32.1 (local), d=255.255.255.255
    (Dialer3),
    len 50, sending broad/multicast
    Dec 2 01:35:35.439 gmt: IP: s=172.31.32.1 (local), d=255.255.255.255
    (BRI0/1),
    len 50, encapsulation failed
    Dec 2 01:35:35.439 gmt: IP: s=172.31.33.1 (local), d=255.255.255.255
    (Dialer4),
    len 50, sending broad/multicast
    Dec 2 01:35:35.443 gmt: IP: s=172.31.33.1 (local), d=255.255.255.255
    (BRI0/1),
    len 50, encapsulation failed
    Dec 2 01:35:35.443 gmt: IP: s=172.31.34.1 (local), d=255.255.255.255
    (Dialer5),
    len 50, sending broad/multicast
    Dec 2 01:35:35.443 gmt: IP: s=172.31.34.1 (local), d=255.255.255.255
    (Dialer5),
    len 50, encapsulation failed
    Dec 2 01:35:35.447 gmt: IP: s=172.31.35.1 (local), d=255.255.255.255
    (Dialer6),
    len 50, sending broad/multicast
    Dec 2 01:35:35.447 gmt: IP: s=172.31.35.1 (local), d=255.255.255.255
    (Dialer6),
    len 50, encapsulation failed
    Dec 2 01:35:35.447 gmt: IP: s=172.31.36.1 (local), d=255.255.255.255
    (Dialer7),
    len 50, sending broad/multicast
    Dec 2 01:35:35.447 gmt: IP: s=172.31.36.1 (local), d=255.255.255.255
    (Dialer7),
    len 50, encapsulation failed
    Dec 2 01:35:35.447 gmt: IP: s=172.31.37.1 (local), d=255.255.255.255
    (Dialer8),
    len 50, sending broad/multicast
    Dec 2 01:35:35.451 gmt: IP: s=172.31.37.1 (local), d=255.255.255.255
    (Dialer8),
    len 50, encapsulation failed
    Dec 2 01:35:35.451 gmt: IP: s=172.31.38.1 (local), d=255.255.255.255
    (Dialer9),
    len 50, sending broad/multicast
    Dec 2 01:35:35.451 gmt: IP: s=172.31.38.1 (local), d=255.255.255.255
    (Dialer9),
    len 50, encapsulation failed
    Dec 2 01:35:35.451 gmt: IP: s=172.31.39.1 (local), d=255.255.255.255
    (Dialer10)
    , len 50, sending broad/multicast
    Dec 2 01:35:35.451 gmt: IP: s=172.31.39.1 (local), d=255.255.255.255
    (Dialer10)
    , len 50, encapsulation failed
    Dec 2 01:35:35.663 gmt: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0/1, TEI
    104
    changed to up
    Dec 2 01:35:38.239 gmt: %LINK-3-UPDOWN: Interface BRI0/1:2, changed state
    to up
    Dec 2 01:35:38.243 gmt: %DIALER-6-BIND: Interface BR0/1:2 bound to profile
    Di4
    Dec 2 01:35:39.159 gmt: %ISDN-6-CONNECT: Interface BRI0/2:1 is now
    connected to
    0162459804 Thuis1
    Dec 2 01:35:39.339 gmt: %LINEPROTO-5-UPDOWN: Line protocol on Interface
    BRI0/1:
    2, changed state to up
    Dec 2 01:35:40.455 gmt: IP: s=192.168.20.180 (local), d=255.255.255.255
    (Ethern
    et1/0), len 50, sending broad/multicast
     
    Hajo Jonker, Dec 15, 2003
    #1
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