About ougryphon

ougryphon · 11-12-2019

I'm out at one of my remote sites replacing some Cisco 2900-series routers with shiny new ISR 4331 routers. Everything was going fine until I tried to turn on PAT on my border routers. No love. The commands from memory are: ip nat inside source list ...

ougryphon · 01-25-2011

I have a Catalyst 2950 access switch with lots of CRC errors on multiple ports with multiple computers. Of all the ports that are connected, all but two have thousands of CRC errors. On the ports I've investigated in depth, about 1 in 6 frames has ...

ougryphon · 11-23-2009

I asked a question about this last week and didn't get any replies, so I'm giving it another try. I have a 2811 that I am using to forward multicast packets to multiple destination VLANs. On one of these VLANs I am NATing the source IP addresses of...

ougryphon · 07-27-2007

I'm a bit of a noobie, so you will have to bear with me (well, you don't but I'd appreciate it). I have three 2811 routers connecting three remote sites to the main network at my location. Currently, the remote sites are broadcasting data to UDP po...

ougryphon · 11-13-2019

I hope this makes it a little more clear. The external routed network is outside my network broundary, and it contains 200ish multicast sources. The internal routed network has other connections at other locations with the same external addresses, wh...

ougryphon · 11-13-2019

Paul, First, thanks for jumping in. Second, I can see why it's confusing and I should have been more explicit. For the purposes of NAT, the inside and outside interface statements don't match my topology because I want to translate the (physical) out...

ougryphon · 11-04-2014

I had the same problem. I could see from the switch interface statistics that the data was being forwarded and the raw bytes received count on my laptop's NIC was going up, but Wireshark was only showing a small fraction of the traffic. Turned out Sy...

ougryphon · 01-26-2011

That was it. It never even occurred to me that I might have problems with speed and duplex since all the computers were auto-detecting fine and the switch wasn't explicitly complaining about speed/duplex mismatch. I think I set up my ports that way...

ougryphon · 01-26-2011

I haven't tried disconnecting everything, but I have tried computer to computer transfers on this switch with the same results. IfI can get some downtime this afternoon, I will try your suggestion.

Member Since	‎07-27-2007 12:12 PM
Date Last Visited	‎11-15-2019 02:52 AM
Posts	34
Total Helpful Votes Received	5

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Help with Multicast Source PAT

CRC Errors on Cat 2950

My 2811 is corrupting packets

Routing broadcast traffic to multicast by port number

Re: Help with Multicast Source PAT

Re: Help with Multicast Source PAT

I had the same problem. I

Re: CRC Errors on Cat 2950

Re: CRC Errors on Cat 2950