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Dec
23
comment Sending a UDP message to a computer inside a network
Er? That doesn't make sense, you seem t obe treating L2 addressing (MACs) like L3 addressing (in this case, NAT). The source MAC is always replaced on forwardíng through an L3 device (but shouldn't be, when sent through an L2 device).
Dec
22
comment Ethernet: network topology
Well, all ports except the ingress port, typically.
Dec
22
answered how to control the bandwidth in LAN with no server?
Dec
22
comment Forward differing hostnames to different internal IPs through NAT router
I think this might work, but you MAY be in for a surprise if people contact your reverse proxy and do assorted "nasty" things to it.
Dec
22
comment Is it feasible to poll traffic readings from Cisco switches more often than every five minutes?
As a general rule, if your Cisco kit hits somewhere between 50% and 60% as "average CPU", you're looking at a bit of a surprise, next time there's a perfect packet storm (as in "watchdog timer triggered, causing platform to reboot").
Dec
20
answered Secure corporate document storage
Dec
20
answered Periodically measure speed of web server internet connection
Dec
19
answered Good book to learn routers and switches
Dec
7
answered Weird Cisco switch problem - minutes with ultimate packetloss
Dec
4
comment Dropped packets in Linux
@joris: As long as you remember that any "loss" or "slowness" seen in the middle of the trace, exceeding that to the end, is down to how intermediate routers respond to ICMP... I've had more than one "fault" reported because people can't properly interpret MTR reports.
Dec
4
answered Dropped packets in Linux
Dec
3
answered QoS basics on a Cisco ASA
Dec
2
comment Different ways to shut down a system
Don't forget "kill -9 1" on most unixoid systems (read that as "it has worked to shut the system down on all I've tried it on", but I admit I havent tried it for QUITE a few years).
Dec
2
revised syntax of switch statment in Unix SunOS 5.9?
Removed the "switch" tag
Dec
1
answered massive packet loss when servers are brought online
Dec
1
answered Allowing communication only from one network to the other using 2 routers
Nov
30
answered How do you diagnose packet loss?
Nov
30
comment Attempting to find a device from MAC/IP
The same port showing up with multiple MAC addresses indicate that you have hubs or switches out of of those ports.
Nov
30
answered Is there a Cisco IOS Virtual Appliance?
Nov
25
comment Rackmount cable length calculations & best practices
One possibility would be to have a long piece of cable, with an TJ-45 connector at one end, having marked distances for each "standard" cable length you have. This would allow you to find the distance needed with something having the exact properties of a cable, routed "properly" and would probably lead to a good intuition for the required lengths after few iterations.