Dr. I Doctor

Fiber Optic Transceiver ARP Caching

Dear Doctor, One interface on our System i box connects to an Ethernet switch that connects through a fiber-optic transceiver (FOT) and cable that runs 3,000 feet to our training center, where another FOT turns the signal back into Cat-5e that plugs in to another Ethernet switch. We sometimes need to unplug PCs from our main building and take them to the training center for special classes. Often when we do this, the PCs won't communicate to our System i server over the fiber, yet they can... Read the rest of entry >>

Posted @ 07/01/2008 1:01 AM By Mel Beckman

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BGP Penalties in Single-Homed Networks

Dear Doctor, Our primary T1 Internet provider has frequent outages, so we're in the process of adding a second upstream Internet provider and will be running the Border Gateway Protocol (BGP) to provide automatic failover between the two providers. I have acquired the necessary Class C IP address space and the Autonomous System Number (ASN), and I have already set up BGP with our existing provider. Our new provider's circuit won't be installed for several weeks, but everything is configured on... Read the rest of entry >>

Posted @ 07/01/2008 1:01 AM By Mel Beckman

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blogs resources

Ohhh We're Movin On Up....

Erin Bradford  |  posted on July 30, 2008
Staying in the same vein as last week's blog, I stumbled on a new job search board for systems management careers that includes a good number of

NEWS Daily Podcast - December 11, 2008

System iNEWS Staff  |  posted on July 17, 2008
As U.S. consumers buy more digital devices, they stockpile more of their favorite music, photos, movies, and games. On the average, consumers now