Re: Reccomend a Switch for Network troubleshooting?



You would get the feature on the first HP managed switch, but you may expect packet loss quickly.

If you can plug between the core switch and the other, then you could buy a TAP.

What sort of troubleshooting are you looking for ?

--
Cordialement,
Mathieu CHATEAU
English blog: http://lordoftheping.blogspot.com
French blog: http://www.lotp.fr


"Scott Townsend" <scooter133@xxxxxxxxxxxxxxxx> wrote in message news:%23xx3rMbCIHA.3848@xxxxxxxxxxxxxxxxxxxxxxx
I'm not sure how much traffic is on the Switch. (-; That's why I'd like to take a peak inside and see what's flying around in there. I have some 10Meg Hubs, though Thought it should not be to much overhead to copy the packet to a 2nd port if Hubs can do it to all Ports. I know its not built the same, though ....

What I usually end up doing is Putting the Hub at the Uplink port on the Switch where it goes to the next mainstream switch, or router. SO in the case of finding out who is hogging our internet connection I put the Hub between the firewall and the Core LAN Switch. So I get any packets in and out of the firewall to the local LAN. We looking for a more 'efficient' solution.

So no Low end switches that can do this?

Thanks,
Scott<-


"Mathieu CHATEAU" <gollum123@xxxxxxx> wrote in message news:eYkTZuqBIHA.1408@xxxxxxxxxxxxxxxxxxxxxxx
Hello,

mirroring port or monitor port (the same) copy packet from/to a port to another. While that sound great in debugging, that overload the switch. I already saw Cisco 3550 starting to loose packet when activating the mirroring, just for a port with 10Mb/s.

For 16 ports, your may just use a hub ;)

How much traffic in total through all these 16 ports do you expect ?

TAP are great for this activity, but i think it's limited to one cable at a time

--
Cordialement,
Mathieu CHATEAU
English blog: http://lordoftheping.blogspot.com
French blog: http://www.lotp.fr


"Scott Townsend" <scooter133@xxxxxxxxxxxxxxxx> wrote in message news:umQSvVqBIHA.5868@xxxxxxxxxxxxxxxxxxxxxxx
I'm looking for a switch I can use for helping with network troubleshooting. One that has one port on it that will see all of the Packets on the switch regardless of the port the packet is destined for. I think its called a Mirror or RMON port?? I would need at least 16 ports.

Any recommendations?

Thanks,
Scott<-




.



Relevant Pages

  • Re: Why has my local Ethernet packed up?
    ... gigabit hub and they do seem happy with it. ... I've also got a gigabit switch and a 10/100 hub (both unmanaged Netgear ... I got some new Ethernet cables. ... The port lights on the Gb switch are `on' where there is a cable running ...
    (uk.comp.sys.mac)
  • Re: Device with Ethernet - fails on switch, but works on hub
    ... Some operations that the switch will do will be MAC-based. ... The hub just sends all packets to all ports. ... connection on the device. ... It is broadcasting 2 packet. ...
    (microsoft.public.windowsce.embedded)
  • Re: tcpdump broken after rh9 2.4.20-27.9 kernel upgrade
    ... of the machines connected to the "hub". ... "true" hub and is either a switch or is using "switch like" functionality. ... The device reads the packet into a holding buffer. ... then if it only sends it to a port it has received packets ...
    (RedHat)
  • RE: MailCensor 3.0 and a HP Procurve2524
    ... this port so you can sniff it. ... switch has this functionality. ... I have no knowledge about how MailCensor 3.0 works, ... As to performance issues on the LAN -> WAN connection with a hub in place, ...
    (Security-Basics)
  • Re: Reccomend a Switch for Network troubleshooting?
    ... though Thought it should not be to much overhead to copy the packet to a 2nd port if Hubs can do it to all Ports. ... What I usually end up doing is Putting the Hub at the Uplink port on the Switch where it goes to the next mainstream switch, ...
    (microsoft.public.windows.server.networking)