Re: same input and output interface index in sFlow packet - is it possible?

 Dear Paolo,

Thanks for your answer.This is the packet I received from the customer.
Here Vlan IDs are also same but IPs and MAC addresses are different.

StartSample ----------------------
sampleType_tag 0:1
sampleType FLOWSAMPLE
sampleSequenceNo 1520756
sourceId 0:2
meanSkipCount 1024
samplePool 1557254144
dropEvents 0
inputPort 2
outputPort 2
flowSampleType HEADER
headerProtocol 1
sampledPacketSize 1294
headerLen 128
headerBytes
00-1B-0C-FB-8B-C8-00-12-F2-0F-E0-A0-08-00-45-00-05-00-11-48-40-00-7F
-06-36-8D-0A-01-02-1F-0A-01-99-02-01-BD-04-8B-A4-72-15-61-78-70-FF-49-50-18-F8-6
8-55-6B-00-00-55-6E-68-6F-6F-6B-57-69-6E-64-6F-77-73-48-6F-6F-6B-45-78-00-00-00-
53-65-74-57-69-6E-64-6F-77-73-48-6F-6F-6B-45-78-41-00-00-00-4D-65-73-73-61-67-65
-42-6F-78-41-00-00-00-4C-6F-61-64-53-74-72-69-6E-67-41-00-00-00-47-65-74-53
dstMAC 001b0cfb8bc8
srcMAC 0012f20fe0a0
IPSize 1280
ip.tot_len 1280
srcIP 10.1.2.31
dstIP 10.1.153.2
IPProtocol 6
IPTOS 0
IPTTL 127
TCPSrcPort 445
TCPDstPort 1163
TCPFlags 24
extendedType SWITCH
in_vlan 2
in_priority 0
out_vlan 2
out_priority 0
endSample ----------------------

Thanks and Regards
Ram

Paolo Lucente wrote:

  Hi Ram,
  
  more infos about the scenario could trap more ideas. For example, if it's
  a L3 device, a chance could be it's a process-routed packet between two
  VLANs on the same interface.
  
  Cheers,
  Paolo
  
  On Thu, Sep 20, 2007 at 11:39:10AM +0530, L.Ramkumar wrote:

    Hi All,
    
    One of our customers receive the sFlow packet with same Input and Output
    interface index numbers. How is it possible? Is there any scenario which
    generates sFlow packet like this?
    
    Your help will be appreciated.
    
    Thanks and Regards
    Ram
Received on Thu Sep 20 07:12:52 2007