Quote:
Originally Posted by cybernetic_tiger
You must remember that when pinging your uBR that ICMP echoes have the lowest priority possible and as such will be dropped / delayed in high traffic periods or if your seg is over subscribed.
However... this is NOT true for your cable modem, pings should always be fairly consistant especially if you are hardwired. Are you using a router and if so what type? And as has been asked before; how are you physically connected to the cable modem?
What other symptoms are you experiencing? What other testing have you carried out other than ping tests?
Also what cable modem do you have?
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Yay someone in the know !
Thanks for highlighting the QoS aspect.
" However... this is NOT true for your cable modem, pings should always be fairly consistant especially if you are hardwired. "
And yes yes yes. That is the strange bit I have been used to consistent pings to the router until recently when I was digging for a ' cause ' to some of my external network problems I started probing my internal network and was suprised to see spikes to the cable modem during peak time *STRANGE*.
To answer your questions.
1 - my router is connected to the cable modem via a dedicated length of cat5e (I'm going to go downstairs now and unplug it and use a different host and different cable to see if I experience the same problems)
2 - Router itself is hand built by myself and is around 4 years old. Its basically an embedded linux board with 3 eth ports. Primary OS is linux based which I built by taking aspects of busybox and merging them / recompiling with glibc2.2 base (an old redhat version). The OS is sucked off a piece of compact flash and straight into physical memory where I have written Shmop and Semaphore based applications and monitors. All in all a solid piece of kit.
3 - Then again it could be the router/cable so I'm off to disconnect it
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