How to enable sFlow on ProCurve switches

Posted on 2010-01-04
Last Modified: 2012-05-08
We are a medium sized business, with <40 HP ProCurve switches. 80% of our switches are 1000MB, the rest are 10/100Mb switches. We have notised that ever so often there's a network downgrade (doing a ping from one end to another end, yields a spike in excess of 1000ms on the local LAN), and we want to use sFlowTrend to see if we can get to the bottom of the problem)

Q1 : how do we enable sFlow on ProCurve switches?,
Q2 : Will sFlowtrend provide the answers?
Question by:PPITGUYS
    LVL 3

    Expert Comment

    sflow 1 sampling A1,A2,A2 256 [ sflow 1 sampling <modules> <sampling rate>]
    sflow 1 destination <destination ip> 9996

    Yes sflow will provide you the results you are looking for.

    Author Comment

    I have an HP J4813A proCurve Switch 2524 with the latest update ;
    Version : F.05.72
    ROM : F.01.01

    I have chosen to use sFlow Trend from inmon to trial a single server but get the following
    when I attempt to configure a single switch

    "Not receiving sFlow. Cannot configure sFlow with SNMP - no sFlow MIB"

    I followed a previous article from that describes how to enable sFlow on ProCurve 2800 series, I managed to get trhough all the aspects except for the last part where you need to set the sampling rates and flow monitoring on ports.

    Where to from here?
    All I want to do is enable this single switch on a single port to do sFlow
    LVL 27

    Expert Comment

    > Where to from here?

    proCurve Switch 25xx series doesn't support sFlow (read 'Managability section on page 116)

    However you may use RMON agent instead. "

    "Extended RMON provides network monitoring and troubleshooting information that analyzes traffic from a network-wide perspective. Extended RMON notifies you about network problems and identifies the end node at fault. That information can be used to set up RMON to study the problem more closely, if desired. Because it is based on detailed statistical sampling, Extended RMON lessens the load on devices and network bandwidth. The Extended RMON agent runs automatically on the switch. To use Extended RMON, simply use Traffic Monitor (included with HP TopTools for Hubs & Switches) on your network management station to enable sampling on the ports you want to monitor."

    > We have notised that ever so often there's a network downgrade (doing a ping from one end to another end, yields a spike in excess of 1000ms on the local LAN)

    Alo such a problem is often related to 'Spanning tree protocol' misconfiguration and presence of network loops. You have too many  switches (<40) to be in the same broadcast segment (if they are really in the same segment). Think of network partitioning and redisigning.

    Accepted Solution

    solution found elsewhere

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