[CentOS] regarding vpn server for 1500 clients

Les Mikesell lesmikesell at gmail.com
Fri Dec 19 19:06:33 UTC 2008


Robert Moskowitz wrote:
> 
>>>>       
>>>>> How about lots of GRE tunnels? :-)
>>>>>     
>>>>>         
>>>> I've done that with a few connections - mostly connecting to Cisco 
>>>> routers to pass multicast streams.  I'm not sure how it would scale up 
>>>> in terms of the interface numbers and managing routes but it should work.
>>>>       
>>> What was the network environment like that the tunnels went over?
>>>     
>> Some over the internet, some private, but always with fixed src/dest 
>> addresses and nothing going over them that couldn't have run unencrypted 
>> over the internet.
> RED (Random Early Discard) was specifically developed and deployed to 
> break flows that lacked congestion control. CeeUceeME was the big 
> culprit at the time. Multicast streams could have a lot of data lose if 
> RED is needed to manage congestion.

Where would this happen - and would it happen to the encapsulating GRE 
packets or just bare udp multicast?

-- 
   Les Mikesell
    lesmikesell at gmail.com



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