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Topic: Inexpensive switch for monitoring
Replies: 3   Pages: 1   Last Post: Sep 22, 2004 6:59 PM by: prn


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Replies: 3   Pages: 1  
km
Inexpensive switch for monitoring
Posted: Aug 9, 2004 4:59 PM
  Reply

For those who need an inexpensive switch that will allow port monitoring, check out the SMC8504T:

http://www.unityelectronics.com/product-product_id/1218

(This place has these at 1/2 to 1/3 the price of all other places I found on the Internet....only $69!!)

Though not on the product page or on the data sheet, check out pg 11 of the manual that is at:

http://www.smc.com/drivers_downloads/library/8504T_MN.pdf

Tucked away in this manual is the fact that this little switch will allow you to setup one of its' ports to monitor traffic flowing through the switch. I cant figure out why they left this out of the 'highlights' for the product. However, do be prepared to 'decipher' the vague manual decriptions and working with the configuration of the switch to get it working the way you need to; this isnt one of the best written manuals I've seen, and setting up the monitoring port does take some trial and error as the 'config' menu and responses on the switch are not very clear.

I just scooped up 6 of these things to replace hubs around my network perimeter.

Check it out and see if it may fit your needs and by all means, only buy 1 and test it out in your environment before buying more.

It worked for me (I needed something and couldnt afford the more expensive "ethernet taps" that I had considered) and the price couldnt be beat.

Eivind Pedersen

Posts: 473
From: Oslo, Norway
Registered: Jun 11, 2002
Re: Inexpensive switch for monitoring
Posted: Aug 10, 2004 11:33 AM
  Reply

Thank you so much for this information. 4 ports should be enough for home networks, but companies would require a lot of these. Do you know if there are any 16 or 24 port inexpensive switches available?

km
Re: Inexpensive switch for monitoring
Posted: Aug 10, 2004 5:13 PM
  Reply

Sorry, I havent found any inexpensive switches with more ports. I use it as a way to monitor bandwidth usage to/from the Internet at various points and to hang off monitors like NetProbe and SNORT; places where one wouldnt normally add any other hosts, so 4 ports was plenty for me; e.g 1 port for my isp connection, one port for my firewall connection and one port for a monitoring station. I am sure that 'real monitoring fanatics' will claim that we really should be using true ethernet taps, but when you work for a small company with very little budget for this sort of thing, one does the best that one can to get some kind of monitoring in place.

prn

Posts: 1
Registered: Sep 22, 2004
Re: Inexpensive switch for monitoring
Posted: Sep 22, 2004 6:59 PM
  Reply

Allied Telesyn's AT-FS7016 and AT-FS7024 claim multi-port tx, rx or tx/rx mirroring, along with mirror filtering by source or dest MAC address and a "mirror divider" sampling feature to copy every 2nd-1023rd packet. Have not tried myself but have seen other A-T products work well.

USA street price around $150 for 16-port and $200 for 24.

"AT-S67 and AT-S68 User's Guide" download via product page at http://www.alliedtelesyn.com/default.aspx has details on pp.35-43.



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