Errors on Interface Vlan 1 on Catalyst 2950

Discussion in 'Cisco' started by Aharon Schkolnik, Sep 25, 2005.

  1. I am getting an awful lot of errors on interface vlan 1 on my
    Catalyst 2950's

    Anyone have any idea what can cause this ?

    sh interfaces vlan 1
    Vlan1 is up, line protocol is up
    Hardware is CPU Interface, address is 0012.43a0.fb40 (bia 0012.43a0.fb40)
    Internet address is 172.16.253.1/16
    MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
    reliability 247/255, txload 1/255, rxload 1/255
    Encapsulation ARPA, loopback not set
    ARP type: ARPA, ARP Timeout 04:00:00
    Last input 00:00:00, output never, output hang never
    Last clearing of "show interface" counters 00:20:30
    Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
    Queueing strategy: fifo
    Output queue: 0/40 (size/max)
    5 minute input rate 0 bits/sec, 0 packets/sec
    5 minute output rate 94000 bits/sec, 27 packets/sec
    2304 packets input, 111233 bytes, 0 no buffer
    Received 501 broadcasts (0 IP multicast)
    0 runts, 0 giants, 0 throttles
    1230 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
    34012 packets output, 7282722 bytes, 0 underruns
    0 output errors, 0 interface resets
    0 output buffer failures, 0 output buffers swapped out
     
    Aharon Schkolnik, Sep 25, 2005
    #1
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  2. Aharon Schkolnik

    leontaylor Guest

     
    leontaylor, Sep 25, 2005
    #2
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  3. Aharon Schkolnik

    Merv Guest

    post
    show version
    show cdp nei det
    show int trunk
     
    Merv, Sep 25, 2005
    #3

  4. The information follows.

    May I ask what you are looking for in show int trunk ?
    Perhaps this will give me a direction to follow.

    TIA !




    UpperSwitch#show vers
    Cisco Internetwork Operating System Software
    IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(22)EA1, RELEASE SOFTWARE (fc1)
    Copyright (c) 1986-2004 by cisco Systems, Inc.
    Compiled Mon 12-Jul-04 08:18 by madison
    Image text-base: 0x80010000, data-base: 0x8055C000

    ROM: Bootstrap program is C2950 boot loader

    UpperSwitch uptime is 54 minutes
    System returned to ROM by power-on
    System image file is "flash:/c2950-i6q4l2-mz.121-22.EA1.bin"

    cisco WS-C2950T-24 (RC32300) processor (revision Q0) with 20873K bytes of memory.
    Processor board ID FOC0833X1GW
    Last reset from system-reset
    Running Enhanced Image
    24 FastEthernet/IEEE 802.3 interface(s)
    2 Gigabit Ethernet/IEEE 802.3 interface(s)

    32K bytes of flash-simulated non-volatile configuration memory.
    Base ethernet MAC Address: 00:12:43:A0:FB:40
    Motherboard assembly number: 73-6114-10
    Power supply part number: 34-0965-01
    Motherboard serial number: FOC08412CTA
    Power supply serial number: DAB0838GVD2
    Model revision number: Q0
    Motherboard revision number: A0
    Model number: WS-C2950T-24
    System serial number: FOC0833X1GW
    Configuration register is 0xF





    UpperSwitch#show cdp nei det
    -------------------------
    Device ID: ExternalSwitch
    Entry address(es):
    IP address: 172.16.253.4
    Platform: cisco WS-C2950-24, Capabilities: Switch IGMP
    Interface: FastEthernet0/4, Port ID (outgoing port): FastEthernet0/1
    Holdtime : 145 sec

    Version :
    Cisco Internetwork Operating System Software
    IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(22)EA2, RELEASE SOFTWARE (fc1)
    Copyright (c) 1986-2004 by cisco Systems, Inc.
    Compiled Sun 07-Nov-04 23:14 by antonino

    advertisement version: 2
    Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF010221FF00000000000000137FB64B00FF0000
    VTP Management Domain: ''
    Native VLAN: 1
    Duplex: full
    Management address(es):
    IP address: 172.16.253.4

    -------------------------
    Device ID: Kyota
    Entry address(es):
    IP address: 212.25.92.190
    Platform: Cisco 1760, Capabilities: Router Switch
    Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/0.3
    Holdtime : 134 sec

    Version :
    Cisco IOS Software, C1700 Software (C1700-IPBASE-M), Version 12.3(11)T3, RELEASE SOFTWARE (fc4)
    Technical Support: http://www.cisco.com/techsupport
    Copyright (c) 1986-2005 by Cisco Systems, Inc.
    Compiled Wed 26-Jan-05 09:15 by pwade

    advertisement version: 2
    VTP Management Domain: ''
    Duplex: full
    Management address(es):

    -------------------------
    Device ID: 00409657ba8d
    Entry address(es):
    IP address: 172.16.1.65
    Platform: AIR-AP350, Capabilities:
    Interface: FastEthernet0/23, Port ID (outgoing port): fec0
    Holdtime : 149 sec

    Version :
    Cisco 350 Series AP 11.21

    advertisement version: 2
    Duplex: full
    Power drawn: 7.000 Watts
    Management address(es):

    -------------------------
    Device ID: PhoneSwitch
    Entry address(es):
    IP address: 172.16.253.3
    Platform: cisco WS-C2950-24, Capabilities: Switch IGMP
    Interface: FastEthernet0/2, Port ID (outgoing port): FastEthernet0/1
    Holdtime : 150 sec

    Version :
    Cisco Internetwork Operating System Software
    IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(22)EA2, RELEASE SOFTWARE (fc1)
    Copyright (c) 1986-2004 by cisco Systems, Inc.
    Compiled Sun 07-Nov-04 23:14 by antonino

    advertisement version: 2
    Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF010221FF00000000000000137FB5D000FF0000
    VTP Management Domain: ''
    Native VLAN: 1
    Duplex: full
    Management address(es):
    IP address: 172.16.253.3

    -------------------------
    Device ID: LowerSwitch
    Entry address(es):
    IP address: 172.16.253.2
    Platform: cisco WS-C2950T-24, Capabilities: Switch IGMP
    Interface: GigabitEthernet0/1, Port ID (outgoing port): GigabitEthernet0/1
    Holdtime : 146 sec

    Version :
    Cisco Internetwork Operating System Software
    IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(22)EA1, RELEASE SOFTWARE (fc1)
    Copyright (c) 1986-2004 by cisco Systems, Inc.
    Compiled Mon 12-Jul-04 08:18 by madison

    advertisement version: 2
    Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF010221FF000000000000001243A2B140FF0000
    VTP Management Domain: ''
    Native VLAN: 1
    Duplex: full
    Management address(es):
    IP address: 172.16.253.2




    UpperSwitch#show int trunk

    Port Mode Encapsulation Status Native vlan
    Fa0/1 on 802.1q trunking 1
    Fa0/2 on 802.1q trunking 1
    Fa0/3 on 802.1q trunking 1
    Fa0/4 on 802.1q trunking 1
    Gi0/1 on 802.1q trunking 1

    Port Vlans allowed on trunk
    Fa0/1 1-4094
    Fa0/2 1-4094
    Fa0/3 1-4094
    Fa0/4 1-4094
    Gi0/1 1-4094

    Port Vlans allowed and active in management domain
    Fa0/1 1-3,11,101,301,901
    Fa0/2 1-3,11,101,301,901
    Fa0/3 1-3,11,101,301,901
    Fa0/4 1-3,11,101,301,901
    Gi0/1 1-3,11,101,301,901

    Port Vlans in spanning tree forwarding state and not pruned
    Fa0/1 1-3,11,101,301,901
    Fa0/2 1-3,11,101,301,901
    Fa0/3 1-3,11,101,301,901
    Fa0/4 1-3,11,101,301,901
    Gi0/1 1-3,11,101,301,901
     
    Aharon Schkolnik, Sep 25, 2005
    #4
  5. Aharon Schkolnik

    Merv Guest

    Q1. If you do a long running ping from the router to the upper-switch
    mgmt address on vlan 1, do you have any ping packet loss?

    Q2. what does show interface vlan 1 on lower_switch show ?
     
    Merv, Sep 25, 2005
    #5
  6. 10000 1500 packets with 0 packet loss.

    LowerSwitch#show interfaces vlan1
    Vlan1 is up, line protocol is up
    Hardware is CPU Interface, address is 0012.43a2.b140 (bia 0012.43a2.b140)
    Internet address is 172.16.253.2/16
    MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
    reliability 255/255, txload 1/255, rxload 1/255
    Encapsulation ARPA, loopback not set
    ARP type: ARPA, ARP Timeout 04:00:00
    Last input 00:00:00, output never, output hang never
    Last clearing of "show interface" counters 15:56:35
    Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
    Queueing strategy: fifo
    Output queue: 0/40 (size/max)
    5 minute input rate 3000 bits/sec, 5 packets/sec
    5 minute output rate 42000 bits/sec, 10 packets/sec
    280021 packets input, 18492800 bytes, 0 no buffer
    Received 39239 broadcasts (0 IP multicast)
    0 runts, 0 giants, 0 throttles
    0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
    572459 packets output, 47714652 bytes, 0 underruns
    0 output errors, 0 interface resets
    0 output buffer failures, 0 output buffers swapped out


    (but at the same time, on UpperSwitch):

    UpperSwitch#show interf vlan1
    Vlan1 is up, line protocol is up
    Hardware is CPU Interface, address is 0012.43a0.fb40 (bia 0012.43a0.fb40)
    Internet address is 172.16.253.1/16
    MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
    reliability 251/255, txload 1/255, rxload 1/255
    Encapsulation ARPA, loopback not set
    ARP type: ARPA, ARP Timeout 04:00:00
    Last input 00:00:00, output never, output hang never
    Last clearing of "show interface" counters 15:17:06
    Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
    Queueing strategy: fifo
    Output queue: 0/40 (size/max)
    5 minute input rate 205000 bits/sec, 3 packets/sec
    5 minute output rate 317000 bits/sec, 34 packets/sec
    87589 packets input, 22114716 bytes, 0 no buffer
    Received 37565 broadcasts (0 IP multicast)
    0 runts, 0 giants, 0 throttles
    27510 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
    1593022 packets output, 122780864 bytes, 0 underruns
    0 output errors, 0 interface resets
    0 output buffer failures, 0 output buffers swapped out
     
    Aharon Schkolnik, Sep 26, 2005
    #6
  7. I have run a series of ping tests from router to switch, from
    switch to router, from switch to switch, etc. I do not have any
    packet loss.

    However, if I copy from flash to a tftp server on a computer
    connected to the upper switch, from the upper switch I get no
    lost packets; from the lower switch to the computer I get a
    small amount of packet loss.
     
    Aharon Schkolnik, Sep 26, 2005
    #7
  8. Aharon Schkolnik

    Merv Guest

    okay.

    Q1. What ports are in VLAN 1 on upper_switch ?

    Q2. What does the output of show interface error counters display ?
     
    Merv, Sep 26, 2005
    #8
  9. UpperSwitch#show vlan

    VLAN Name Status Ports
    ---- -------------------------------- --------- -------------------------------
    1 default active Fa0/3, Fa0/14, Fa0/15, Fa0/17, Fa0/18, Fa0/19, Fa0/20
    Fa0/21, Fa0/23, Fa0/24
    2 VLAN0002 active
    3 VLAN0003 active Fa0/5, Fa0/6, Fa0/7, Fa0/8, Fa0/9, Fa0/10, Fa0/12, Fa0/13
    Fa0/16, Fa0/22
    11 VLAN0011 active Fa0/11
    101 VLAN0101 active
    301 VLAN0301 active
    901 VLAN0901 active
    1002 fddi-default act/unsup
    1003 token-ring-default act/unsup
    1004 fddinet-default act/unsup
    1005 trnet-default act/unsup





    The only interfaces with errors (at this moment) are
    gigaethernet 0/1 and vlan 1, as below:

    The CRCs on the giga interface are my second problem. I am not sure it is
    a hardware problem since I have swapped cables, ports and even switches to
    no avail. It may be related to the errors on VLAN1 problem, but even if it
    is, I am not sure which problem is causing the other.



    UpperSwitch#sh interfaces gigabitEthernet 0/1
    GigabitEthernet0/1 is up, line protocol is up (connected)
    Hardware is Gigabit Ethernet, address is 0012.43a0.fb59 (bia 0012.43a0.fb59)
    MTU 1500 bytes, BW 1000000 Kbit, DLY 1000 usec,
    reliability 255/255, txload 1/255, rxload 1/255
    Encapsulation ARPA, loopback not set
    Keepalive set (10 sec)
    Full-duplex, 1000Mb/s, media type is RJ45
    input flow-control is off, output flow-control is off
    ARP type: ARPA, ARP Timeout 04:00:00
    Last input 00:00:09, output 00:00:01, output hang never
    Last clearing of "show interface" counters 00:01:55
    Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
    Queueing strategy: fifo
    Output queue: 0/40 (size/max)
    30 second input rate 25000 bits/sec, 16 packets/sec
    30 second output rate 1101000 bits/sec, 121 packets/sec
    1670 packets input, 298098 bytes, 0 no buffer
    Received 82 broadcasts (0 multicast)
    0 runts, 0 giants, 0 throttles
    2 input errors, 2 CRC, 0 frame, 0 overrun, 0 ignored
    0 watchdog, 12 multicast, 0 pause input
    0 input packets with dribble condition detected
    13685 packets output, 15651627 bytes, 0 underruns
    0 output errors, 0 collisions, 0 interface resets
    0 babbles, 0 late collision, 0 deferred
    0 lost carrier, 0 no carrier, 0 PAUSE output
    0 output buffer failures, 0 output buffers swapped out

    UpperSwitch#show interfaces vlan1
    Vlan1 is up, line protocol is up
    Hardware is CPU Interface, address is 0012.43a0.fb40 (bia 0012.43a0.fb40)
    Internet address is 172.16.253.1/16
    MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
    reliability 251/255, txload 1/255, rxload 1/255
    Encapsulation ARPA, loopback not set
    ARP type: ARPA, ARP Timeout 04:00:00
    Last input 00:00:00, output never, output hang never
    Last clearing of "show interface" counters 00:03:14
    Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
    Queueing strategy: fifo
    Output queue: 0/40 (size/max)
    5 minute input rate 1000 bits/sec, 4 packets/sec
    5 minute output rate 88000 bits/sec, 31 packets/sec
    1253 packets input, 80744 bytes, 0 no buffer
    Received 306 broadcasts (0 IP multicast)
    0 runts, 0 giants, 0 throttles
    97 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
    6208 packets output, 2330465 bytes, 0 underruns
    0 output errors, 0 interface resets
    0 output buffer failures, 0 output buffers swapped out
     
    Aharon Schkolnik, Sep 26, 2005
    #9
  10. Aharon Schkolnik

    kwojtasz

    Joined:
    Oct 17, 2007
    Messages:
    1
    Likes Received:
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    solution to vlan1 input errors

    When you connect a switch to another switch through a trunk port and the number of VLANs on the first switch is lower than the number on the connected switch, interface errors are received on the management VLAN of the first switch.

    The workaround is to match the configured VLANs on each side of the trunk port. (CSCea23138)
    -----------

    So check your vtp status on each switch. (sh vtp status or sh vlan) One of the switches probably has a different amount of vlans than the first one, thus causing the input errors. For additional vlan info check out:
    http://www.cisco.com/en/US/docs/swi...1_4_ea1/command/reference/cli3.html#wp1025040
     
    kwojtasz, Oct 17, 2007
    #10
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