Solved: Dell PowerConnect sFlow issue.

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CCG3🇺🇸

Dell PowerConnect sFlow issue.

I recently acquired with a few PowerConnect 6248 switches and I was trying to setup sFlow on them and it looks like my output isn’t working. I heard that this is a known firmware issue with Dell switches(I am on Version 1.3; Dell Corp.; 3.3.3.3).

Below is what I see when I look at an sFlow packet in WireShark. Has anyone else came across this? Where you able to get past it? Thanks in advance for any input you can give me!!

As seen in BrainShark:

Flow sample, seq 54
Enterprise: standard sFlow (0)
sFlow sample type: Flow sample (1)
Sample length (byte): 184
Sequence number: 54
Source ID class: 0 index: 46
Sampling rate: 1 out of 1024 packets
Sample pool: 55 total packets
Dropped packets: 0
Input interface: ifIndex 46
Output interface: ifIndex 0
Flow record: 1

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EVIL3

Hi

Did you find a solution to this?

Unfortunately I'm in a similar boat to you with the same Switches, the only info I could find was this

http://blogs.manageengine.com/netflowanalyzer/2011/01/27/the-case-of-the-missing-out-traffic-with-sflow-and-netflow-analyzer/

CCG3🇺🇸

ASKER

Thanks, no I have nto found a solution. If you find out anything please post back and let me know. I am looking at doing port mirroring instead. Hopefully I can spend some time on it next week.

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EVIL3

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CCG3🇺🇸

ASKER

Thanks for the tip K!

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A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.