Category: Networking
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Avocent Cyclades ACS48 Console Server
I have an old Cisco device that has one port for an octal-cable. This gives you 8 console ports to other routers. Since I’ve been revamping my lab (AKA cleaning all the crap out of my room) I realized that I needed more console ports. I figured I would look on Ebay to see what…
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TheBrothersWISP 13 – Meet Tom
In this episode we have Myself(Greg Sowell), Justin Wilson, and special guest Tom Smyth. Tom is a trainer/consultant from Ireland. He is, quite frankly, insane. Inspite of, or more likely because of, his insanity he is also a lot of fun. Even though it was 3AM for him he stuck it out and had a…
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BFD – Bidirectional Forwarding Detection
BFD is a routing protocol independent fast failure detection method(subsecond detection is possible). It is basically a faster way to signal to your dynamic routing protocols({Cisco – OSPF, IS-IS, EIGRP, and BGP}{Mikrotik – OSPF and BGP}) that there has been a failure of a neighbor. The Cisco link above has a very good description of…
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MUM 2012 Multi-Homed BGP
At this year’s MUM I did a presentation on multi-homed BGP. Multi-homed BGP is when your autonomous system peers with multiple internet providers. Peering via BGP with multiple providers allows you to add IP address redundancy, load-balancing inbound/outbound and have greater control of how your addressing is viewed to the internet at large. This covers:…
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MUM 2012 Day 1
A lot of good guys out there in the exhibitor hall. A lot of good distributors and people in the user account management area. New products: RB2011UAS-RM SFP 5 gig ethernet 5 10/100 ethernet 128MB RAM L5 1U rack mountale LCD serial micro-usb RB2011UAS-2HnD-IN SFP 5 gig ethernet 5 10/100 ethernet 128MB RAM 1W 3.4Gnz…
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Odd Cisco Inspect Behavior
I was recently asked to evaluate why a network was having issues with watching youtube or download large files. I checked speed and duplex, every thing was fine on my and their sides. show int I checked the CPU and everything was fine. show proc cpu history To rule out the rest of their network,…
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What Could Be More Simple Than Replacing A 6509 Supervisor…?
Noting…unless of course you are me 🙂 Here’s the situation. We are doing user aggregation on a 6509 chassis. Due to cost considerations, we only put a single Sup in. We had a power supply failure which subsiquently killed the super…don’t ask me how, but it did. I quickly threw in a redundant sup720 I…