Ethereal-users: [Ethereal-users] Malformed Packet:SNMP

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From: "Mitchell, Tony" <TMitchel@xxxxxxxxx>
Date: Tue, 26 Nov 2002 13:47:22 -0000
All,

Does anybody know ALL the conditions that cause an SNMP packet to be
reported as "Malformed"
Please see the below capture.


Frame 2690 (306 on wire, 306 captured)
    Arrival Time: Oct  9, 2002 18:54:47.242069000
    Time delta from previous packet: 0.002554000 seconds
    Time relative to first packet: 71.850923000 seconds
    Frame Number: 2690
    Packet Length: 306 bytes
    Capture Length: 306 bytes
Ethernet II
    Destination: 00:50:2a:55:78:10 (Cisco_55:78:10)
    Source: 00:80:f9:49:92:1d (HEURIKON_49:92:1d)
    Type: IP (0x0800)
Internet Protocol, Src Addr: 192.168.128.2 (192.168.128.2), Dst Addr:
192.168.99.4 (192.168.99.4)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 292
    Identification: 0x12c9
    Flags: 0x00
        .0.. = Don't fragment: Not set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 63
    Protocol: UDP (0x11)
    Header checksum: 0x03a9 (correct)
    Source: 192.168.128.2 (192.168.128.2)
    Destination: 192.168.99.4 (192.168.99.4)

User Datagram Protocol, Src Port: 1024 (1024), Dst Port: snmptrap (162)
    Source port: 1024 (1024)
    Destination port: snmptrap (162)
    Length: 272
    Checksum: 0x0000 (none)
Simple Network Management Protocol
    Version: 1
    Community: CienaTrap
    PDU type: TRAP-V1
    Enterprise: 1.3.6.1.4.1.1271.1.5
    Agent address: 192.168.128.2
    Trap type: ENTERPRISE SPECIFIC
    Specific trap type: 2 (0x2)
    Timestamp: 3183047932
    Object identifier 1: 1.3.6.1.4.1.1271.1.4.1.0
    Value: INTEGER: 2053 (0x805)
    Object identifier 2: 1.3.6.1.4.1.1271.1.3.1.1.1.1.12
    Value: INTEGER: 1 (0x1)
    Object identifier 3: 1.3.6.1.4.1.1271.1.3.1.1.2.1.12
    Value: INTEGER: 12 (0xc)
    Object identifier 4: 1.3.6.1.4.1.1271.1.3.1.1.7.1.12
    Value: INTEGER: 7 (0x7)
    Object identifier 5: 1.3.6.1.4.1.1271.1.3.1.1.10.1.12
    Value: INTEGER: 2053 (0x805)
    Object identifier 6: 1.3.6.1.4.1.1271.1.3.12.1.3.1.12.2053.1050
    Value: INTEGER: 2053 (0x805)
    Object identifier 7: 1.3.6.1.4.1.1271.1.3.12.1.1.1.12.2053.1050
    Value: INTEGER: 1050 (0x41a)
    Object identifier 8: 1.3.6.1.4.1.1271.1.3.12.1.12.1.12.2053.1050
[Malformed Packet: SNMP]

> Tony Mitchell - Technical Support Manager 
> Ciena (gpsEMEA)
> 
>