show interfaces output - explain?

Discussion in 'Cisco' started by JimD, Feb 28, 2006.

  1. JimD

    JimD Guest

    Can someone please explain a few details about my show interfaces
    output?
    It is a Cisco 800 series that operates as a DSL modem.

    What do each of the interfaces mean?
    ATM0, ATM0.1, Dialer0, Dialer1, Virtual-Access1?

    What does the BW mean exactly? Total bandwidth for that interface? The
    DSL is supposed to have 3Mbit download and 800Kbit upload...why do I
    only see 800Kbit in the output?

    Why does the BW only show 56Kbit for some of the interfaces(Dialer0,
    Dialer1, Virtual-Access1)? I assume it is something to do with the
    phone line?

    What does the "spoofing" mean?

    ATM0 is up, line protocol is up
    Hardware is MPC ATMSAR (with Alcatel ADSL Module)
    MTU 4470 bytes, sub MTU 4470, BW 800 Kbit, DLY 460 usec,
    reliability 255/255, txload 11/255, rxload 6/255

    ATM0.1 is up, line protocol is up
    Hardware is MPC ATMSAR (with Alcatel ADSL Module)
    Description: $ES_WAN$
    MTU 4470 bytes, BW 800 Kbit, DLY 460 usec,
    reliability 255/255, txload 11/255, rxload 6/255

    Dialer0 is up (spoofing), line protocol is up (spoofing)
    Hardware is Unknown
    MTU 1500 bytes, BW 56 Kbit, DLY 20000 usec,
    reliability 255/255, txload 1/255, rxload 1/255

    Dialer1 is up, line protocol is up (spoofing)
    Hardware is Unknown
    Description: $FW_OUTSIDE$
    Internet address is xxx.xxx.xxx.xxx/32
    MTU 1492 bytes, BW 56 Kbit, DLY 20000 usec,
    reliability 255/255, txload 1/255, rxload 1/255
    Bound to:

    Virtual-Access1 is up, line protocol is up
    Hardware is Virtual Access interface
    MTU 1492 bytes, BW 56 Kbit, DLY 20000 usec,
    reliability 255/255, txload 132/255, rxload 72/255

    Thank you very much!
    James
    JimD, Feb 28, 2006
    #1
    1. Advertising

  2. JimD

    ihsan Guest

    If you want to check your xDSL speed use show dsl command and look for Speed
    in the out put. e.g.

    ADSL#show dsl interface atm 0
    :
    :
    :

    Interleave Fast Interleave
    Fast
    Speed (kbps): 0 1024 0 256


    JimD wrote:
    >Can someone please explain a few details about my show interfaces
    >output?
    >It is a Cisco 800 series that operates as a DSL modem.
    >
    >What do each of the interfaces mean?
    >ATM0, ATM0.1, Dialer0, Dialer1, Virtual-Access1?
    >
    >What does the BW mean exactly? Total bandwidth for that interface? The
    >DSL is supposed to have 3Mbit download and 800Kbit upload...why do I
    >only see 800Kbit in the output?
    >
    >Why does the BW only show 56Kbit for some of the interfaces(Dialer0,
    >Dialer1, Virtual-Access1)? I assume it is something to do with the
    >phone line?
    >
    >What does the "spoofing" mean?
    >
    >ATM0 is up, line protocol is up
    > Hardware is MPC ATMSAR (with Alcatel ADSL Module)
    > MTU 4470 bytes, sub MTU 4470, BW 800 Kbit, DLY 460 usec,
    > reliability 255/255, txload 11/255, rxload 6/255
    >
    >ATM0.1 is up, line protocol is up
    > Hardware is MPC ATMSAR (with Alcatel ADSL Module)
    > Description: $ES_WAN$
    > MTU 4470 bytes, BW 800 Kbit, DLY 460 usec,
    > reliability 255/255, txload 11/255, rxload 6/255
    >
    >Dialer0 is up (spoofing), line protocol is up (spoofing)
    > Hardware is Unknown
    > MTU 1500 bytes, BW 56 Kbit, DLY 20000 usec,
    > reliability 255/255, txload 1/255, rxload 1/255
    >
    >Dialer1 is up, line protocol is up (spoofing)
    > Hardware is Unknown
    > Description: $FW_OUTSIDE$
    > Internet address is xxx.xxx.xxx.xxx/32
    > MTU 1492 bytes, BW 56 Kbit, DLY 20000 usec,
    > reliability 255/255, txload 1/255, rxload 1/255
    >Bound to:
    >
    >Virtual-Access1 is up, line protocol is up
    > Hardware is Virtual Access interface
    > MTU 1492 bytes, BW 56 Kbit, DLY 20000 usec,
    > reliability 255/255, txload 132/255, rxload 72/255
    >
    >Thank you very much!
    >James
    ihsan, Feb 28, 2006
    #2
    1. Advertising

Want to reply to this thread or ask your own question?

It takes just 2 minutes to sign up (and it's free!). Just click the sign up button to choose a username and then you can ask your own questions on the forum.
Similar Threads
  1. Peter Jonas
    Replies:
    3
    Views:
    884
    Walter Roberson
    Jan 5, 2004
  2. gaetano

    show ip interfaces brief

    gaetano, Jan 25, 2004, in forum: Cisco
    Replies:
    1
    Views:
    4,052
    Atanas
    Jan 25, 2004
  3. Peter H
    Replies:
    43
    Views:
    1,159
    Bill M
    Dec 4, 2003
  4. Otto Pylot
    Replies:
    1
    Views:
    3,542
    LASERandDVDfan
    Apr 18, 2004
  5. Chris
    Replies:
    4
    Views:
    460
    andre
    Sep 25, 2004
Loading...

Share This Page