[cisco-ttl] subinterface'lerin otomatik farklı hızlarda çalışması..

From: ogul (ogulcan3000_at_yahoo.com)
Date: Wed Jan 14 2004 - 05:41:50 GMT

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    Selamlar,
    Bir kaç gündür çözemediğimiz bir problem var,değerli yorumlarınızı
    bekliyorum.
    herkese iyi çalışmalar.

    Problem router ethernetinde yapılan sun interfacelerin otomatik
    olarak farklı bandwidth'ler alması,tek-tips forumlarında bir sonuç
    alamadım ama önerileri de sunuyorum.

    ogulcan (IS/IT--Manageme) Jan 13, 2004
    Hi,
    On a 3700 cisco router i got the following configuration on ethernet;

    interface FastEthernet0/0
     no ip address
     no ip route-cache
     no ip mroute-cache
     duplex auto
     speed auto
    !
    interface FastEthernet0/0.1
     encapsulation dot1Q 10
     ip address 10.1.222.1 255.255.255.248
     ip access-group 105 in
     ip accounting access-violations
     no ip route-cache
     no ip mroute-cache
    !
    interface FastEthernet0/0.2
     encapsulation dot1Q 2
     ip address 1.4.52.1 255.255.255.0
     no ip route-cache
     no ip mroute-cache

    Now ,the problem is when i try to see the bandwidths of each
    interface i see the following thing that i couldn't understand:

    router_3700#sh interface FastEthernet0/0.2
    FastEthernet0/0.2 is up, line protocol is up
      Hardware is Gt96k FE, address is 000b.bec3.8cd0 (bia 000b.bec3.8cd0)
      Internet address is 2.16.128.1/24
      MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
         reliability 255/255, txload 1/255, rxload 1/255
      Encapsulation 802.1Q Virtual LAN, Vlan ID 2.
      ARP type: ARPA, ARP Timeout 04:00:00

    router_3700#sh interface FastEthernet0/0.1
    FastEthernet0/0.1 is up, line protocol is up
      Hardware is Gt96k FE, address is 000b.bec3.8cd0 (bia 000b.bec3.8cd0)
      Description: SUBE
      Internet address is 2.16.2.1/24
      MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
         reliability 255/255, txload 1/255, rxload 1/255
      Encapsulation 802.1Q Virtual LAN, Vlan ID 1.
      ARP type: ARPA, ARP Timeout 04:00:00

    as you see at the second subinterface
     BW 10000 Kbit
    at the first subinterface
     BW 100000 Kbit

    why is this difference,both are attached to same port on a 10/100
    switch?

    thank you friends.
     
    -------------------------------
    jdel (TechnicalUser) Jan 13, 2004
    the first thing i noticed is that the speed and duplex are both set
    to auto. auto-negotiation works about as well as plug-n-play, which
    is to say it works for <bleep>.

    it would appear then that one subinterface is auto-negotiating to 100
    full, and the other to 10 half.

    try hardcoding (on the switch and the router) to all 100 full.

     --------------------------
    baddos (MIS) Jan 13, 2004
    Another tip would be to turn on "ip route-cache". Although it's not
    related to your problem, it is definately a scalability problem.
    --------------------------
    ogulcan (IS/IT--Manageme) Jan 14, 2004
    jdel;

    i did what you said exactly;
    changed the speed manually ;100 the port connected the router,and the
    port of the router..but problem remains.

                                     Allied Telesyn Ethernet Switch AT-
    8024GB - AT-S39 v3.2.0
                                     <No System Name>
    Login Privilege: Manager
                                    Port Configuration

    Configuring Ports 24
    0 - Status ............ Forwarding
    1 - Negotiation ....... Manual
    2 - Speed ............. 0100
    3 - Duplex ............ Full-Duplex
    4 - Flow Control ...... None
    M - MDI/MDIX Mode ..... MDIX
    B - Broadcast Control . No Broadcast Control

    X - Reset Port
    R - Return to Previous Menu

    Enter your selection?

    ----------------------------
    interface FastEthernet0/0
     no ip address
     no ip route-cache
     no ip mroute-cache
     speed 100
     full-duplex
    ----------------------------
    sh int FastEthernet0/0.2
    FastEthernet0/0.2 is up, line protocol is up
      Hardware is Gt96k FE, address is 000b.bec3.8cd0 (bia 000b.bec3.8cd0)
      Internet address is 2.16.128.1/24
      MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
         reliability 255/255, txload 1/255, rxload 1/255
      Encapsulation 802.1Q Virtual LAN, Vlan ID 2.
      ARP type: ARPA, ARP Timeout 04:00:00
    ---------------------------------
     

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