Tag: Cisco
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Serial commuications on a MacBook Pro
Connecting to a device using via a rs232 using a MacBook is not straight forward, but possible if you have one of the more popular USB-to-Serial adapters. The PL2303 adapter is sold by a number of manufacturers under different model names. Luckily, however, most of them run on the same basic chip for which an…
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Cisco Catalyst with StackWise not that wise
Today I attempted to add a Cisco catalyst 3750 to an existing stack of Cisco switches. A stack is a number of sequentially connected switches via the proprietary 16gbps StackWise™ cable. As the advertising story goes adding a switch to an existing stack should be as simple as connecting the switch to the stack via…
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Fix a Cisco 3750 with blinking PoE light
In this article I’ll discuss how to fix a Cisco 3750 24 Port power over Ethernet (PoE) switch with a rapidly blinking amber PoE light. Amber lights usually indicate something bad, so I consoled into the switch and did a “show power inline” to find out that several ports showed faulty PoE operation. Here’s how to resolve…