[ogf20pc] Network question

[Fotis Karayannis]

Hi Stephen,
  no it is the second. It was easy for us to get the addresses and 
wanted to be safe.
Multicast is required for AccessGrid and similar streaming/conferencing 
apps (although multicast/unicast bridges can work out ok), but I don't 
know if there are any such requirements.
All the best,
Fotis

Stephen M Pickles wrote:
> Thanks, Fotis.
> 
> Did you have a known requirement for real IP addresses?
> Or did you do it that way just to be safe?
> 
> Best regards,
> 
> Stephen
> 
> PS All - we're also assuming that no-one will need
> multicast support. Speak now or forever hold your peace!
> 
> 
>>-----Original Message-----
>>From: Fotis Karayannis [mailto:fkara at grnet.gr] 
>>Sent: 08 February 2007 15:07
>>To: Stephen.Pickles at manchester.ac.uk
>>Cc: ogf20pc at ogf.org; Kristina Ulrika Gunne; Steven Newhouse; 
>>Spiros Athanasakis; GRNET Admin support
>>Subject: Re: [ogf20pc] Network question
>>
>>Hi Stephen,
>>  I can link you with my networking guys that did both the EGEE-3
>>conference and the GGF16 in Athens. For those we got 4 class 
>>C addresses
>>(a bit more than a thousand IPs). Indeed it takes some 
>>negotiation with
>>the national registry, but it is a standard procedure.
>>
>>Your hybrid solution is also ok (and maybe more secure) but 
>>indeed adds
>>  to the complexity.
>>Let's take the rest off line,
>>All the best,
>>Fotis
>>
>>Stephen M Pickles wrote:
>>
>>>All,
>>>
>>>A question has arisen regarding the network provision at OGF20
>>>and EGEE-UF 2.
>>>
>>>Is anyone likely to be running a demonstration in the exhibition
>>>that will involve incoming connections?
>>>
>>>We need to be able to provide up to 900 or so IP addresses.
>>>If all connections will be outgoing, it should be possible
>>>to do this using Network Address Translation. If some connections
>>>will be incoming, then it is likely that real IP addresses
>>>will be needed.
>>>
>>>An early response will be very helpful. Obtaining 900+ real
>>>IP addresses will require some negotiation and cannot be
>>>guaranteed at this stage. Adopting a hybrid solution of NAT
>>>for wireless and real IP addresses for wired ethernet to
>>>the booths is possible, but would add complexity
>>>to the network design and configuration.
>>>
>>>Stephen
>>>
>>>PS We're assuming IPV6 will not be required.
>>>
>>>==================== Stephen M. Pickles ====================
>>>
>>>Technical Director, National Grid Service
>>>Manchester Computing
>>>Room G49.1, Kilburn Building
>>>The University of Manchester           tel: +44 161 275 5974
>>>Oxford Road                            fax: +44 161 275 6800
>>>Manchester M13 9PL          stephen.pickles at manchester.ac.uk
>>>
>>>_______________________________________________
>>>ogf20pc mailing list
>>>ogf20pc at ogf.org
>>>http://www.ogf.org/mailman/listinfo/ogf20pc
>>>
>>
>>--
>>Fotis Karayannis, Dr. Eng.
>>Infrastructure Development and Planning Manager
>>Greek Research & Technology Network-GRNET S.A.
>>http://www.grnet.gr
>>
>>56, Mesogion Ave., Ampelokipi
>>4th Floor, Technical Department
>>GR11527 Athens
>>Phone :  +30 210 7474241 (direct)
>>          +30 210 7474254
>>Fax   :  +30 210 7474490
>>Mobile:  +30 6977 606169
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
> 
> 
> 

-- 
Fotis Karayannis, Dr. Eng.
Infrastructure Development and Planning Manager
Greek Research & Technology Network-GRNET S.A.
http://www.grnet.gr

56, Mesogion Ave., Ampelokipi
4th Floor, Technical Department
GR11527 Athens
Phone :  +30 210 7474241 (direct)
          +30 210 7474254
Fax   :  +30 210 7474490
Mobile:  +30 6977 606169