Latest posts
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Cisco 6500/7600 In Service IOS Upgrades
If you have redundant processors, why not take advantage of it. You can upgrade the IOS on the redundant processor, fail over to it, then do the same to the primary. In theory you will see no outtage. Cisco’s link.
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Atheros Adaptive Noise Immunity (ANI)
In the Atheros AR5212 and newer chipsets there is a new feature called Adaptive Noise Immunity. It is basically a hardware noise reduction technology. Adaptive Noise Immunity (ANI) adjusts various receiver parameters dynamically to minimize interference and noise effect on the signal quality. I’ve got some 2.4 gear in a noisy neighbor hood and I…
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Mikrotik V5.6 Released
What’s new in 5.6 (2011-Aug-02 14:45): *) fixed ssh server crashing when sessions were interrupted *) ipsec – fix a problem which could silently remove a manual policy from the kernel if the peer configuration has ‘generate-policy’ set to ‘yes’ and if the policy matches with the traffic selector of a SA being removed on…
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Cacti – Syslog-NG – Duplicate Entry For Key
If you notice that your alerts stop coming in from syslog or notice that your syslog isn’t showing any results, then check to make sure the syslog-ng service is running. service syslog-ng status If it is running, then try restarting it. service syslog-ng restart If you are having the same issues I have, then you…
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Houston DC Part 2
Last week was an endurance run. It was days and days of persistent work. My ISP was somewhat delayed in getting my circuit up so I had a handful of hours to get everything complete…I do my best work under pressure 😉 I believe you guys remember seeing my preterm cable…here’s my patented spool rest…
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Redneck Ripstick
I’ve had a looooong week. I felt like screaming, then moving to the beach. Instead, I decided to build something…which is something I haven’t done in ages. While walking around harbor freight my nephew and I picked up a swivel wheel. Daniel says “Why don’t we build a ripstick”. A Ripstick is basically a skateboard…
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Cisco 7600 Or 6500 Boots To Rommon
If you boot straight to rommon on your 7600, with a message saying that it is unable to find boot file: Autoboot: failed, BOOT string is empty Then first check the boot flash on the supervisor: rommon 1 > dir bootflash: You will most likely see something along the lines of : rommon 1 >…