Re: Automatic tunnels

[Kurt Erik Lindqvist <kurtis@kurtis.pp.se>]

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>>>> very reluctant to roll-out dual-stack software (or at least to 
>>>> activate
>>>> it) on my routers.
>>>>
>>> I'm curious, what do you see as the main reasons for this?
>>>
>>>
>>
>> Experience?:-) The two vendors have enough of a problem to get v4 
>> packets from interface A to interface B, and that is with customers 
>> that are paying for SLAs...
>>
>> I know it's being done and on pretty large networks as well. But I 
>> also hear people that are having problems in doing so.
>>
>>
> Not sure if I understood the point above correctly, but there are 
> several reasons that ISPs use not to deploy dual-stack...the biggest 
> is simply fear of the unknown ;-)

Absolutely. It's probably the largest reason. But even then tunnels are 
a great help for ISPs to see and learn.

> Actually, in the past we (FCCN, the portuguese NREN) had several 
> problems with Cisco routers, due to unstable "stable" IOS versions.  
> But, after a bit of tackling, dual-stack is running indeed. Juniper 
> routers were a great help to deploy dual-stack in an operacional 
> environment. There were no problems at all.

Glad to hear. I have heard opposite experiences but this will probably 
vary with your network topology, size, equipment in use etc. Just as 
for v4.

- - kurtis -

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