Re: My Cisco 7200 dowsn't export any data!

From: Roman Popov (rvp@demos.su)
Date: Thu Aug 16 2001 - 12:02:29 PDT

  • Next message: Fernando Mayo \(acens\): "RE: My Cisco 7200 dowsn't export any data!"

     This is a cisco ios bug, netflow doesn't work without cef enabled on ioses
    above 12.1.3T.

    On Thu, Aug 16, 2001 at 12:02:40PM +0200, Fernando Mayo (acens) wrote:
    > Hi;
    >
    > I have searched into the mail archive, but I didn't find any answer about
    > this question.
    >
    > I'm having some trouble about exporting flow data from a 7200 running
    > 12.1(5)T4 IOS to my cflowd server (running on Red Hat Linux 6.2, but it is
    > not relevant, I think).
    >
    > Flow export is enabled on the desired interface:
    >
    > interface FastEthernet1/0
    > description Backbone
    > ip address xxxxxxxxxxxxxxxxxx
    > no ip unreachables
    > no ip proxy-arp
    > ip route-cache same-interface
    > IP ROUTE-CACHE FLOW
    > load-interval 30
    > duplex full
    > no cdp enable
    > standby priority 110 preempt
    > standby ip xxxxxxxxxxxxx
    >
    > And flow export is enabled, to a directly attached host, wich is running
    > cflowd:
    >
    > ip flow-export source Loopback0
    > ip flow-export destination 10.6.1.41 2055
    >
    > Here is the output of "debug ip flow export" command:
    >
    > router1#debug ip flow export
    > IP Flow export mechanism debugging is on
    > 9w1d: IPFLOW: Sending export pak to 10.6.1.41 port 2055
    > 9w1d: IPFLOW: Sending export pak to 10.6.1.41 port 2055
    >
    > So, I should think the router is sending data to cflowd..but it doesn't!
    > I don't see any traffic coming the router on 2055 port if I run tcpdump on
    > the cflowd host's interface directly attached to the router, but there is
    > communication between them, because I can see ICMP packets on that tcpdump
    > if I ping the cflowd server from the router.
    >
    > Here is the output of "show ip flow export" in the router:
    >
    > router1#sh ip flow export
    > Flow export is enabled
    > Exporting flows to 10.6.1.41 (2055)
    > Exporting using source interface Loopback0
    > Version 1 flow records
    > 1163596 flows exported in 56297 udp datagrams
    > 0 flows failed due to lack of export packet
    > 56295 export packets were sent up to process level
    > 0 export packets were dropped due to no fib
    > 0 export packets were dropped due to adjacency issues
    > 0 export packets were dropped due to fragmentation failures
    > 0 export packets were dropped due to encapsulation fixup failures
    >
    > Do you know what is happen ?
    > Do you know what mean "56295 export packets were sent up to process level"?
    >
    > Thanks a lot
    >
    > Regards
    >
    > Fernando Mayo Tel. Directo: 911418544
    > http://www.acens.com
    > fernando.mayo@acens.com
    >
    > C/ San Rafael, 14
    > Pol?gono industrial Alcobendas
    > 28108 Alcobendas (Madrid)
    >
    >
    >
    >
    > --
    > cflowd mailing list
    > cflowd@caida.org

    -- 
    

    wbw Roman Popov -- cflowd mailing list cflowd@caida.org



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