Jesper,
Do you refuse to do it based on upstreams filtering or what is the
justification for it ?
Thanks & Regards,
Kevin
CCNP,CCDP,MCNS,HPOVC,Cisco Net Ranger Specialist
-----Original Message-----
From: Jesper Skriver <jesper@skriver.dk>
To: Jason Lim <jas@staff.singnet.com.sg>
Cc: cisco-nsp@puck.nether.net <cisco-nsp@puck.nether.net>
Date: Tuesday, August 08, 2000 10:33 PM
Subject: Re: [nsp] dual-homed issue
>On Tue, Aug 08, 2000 at 10:25:11PM +0800, Jason Lim wrote:
>> Hi all,
>>
>> Actually, I need advise in dual-homing policy with our lease line
>> customers. We have encountered some issues on lease lines customers
>> wanting to dual-home their connection with our ISP(ISP1) and other
>> ISP(ISP2) and this demand is growing. For example, a customer with two
>> connection to ISP1(AS100) and ISP2(AS200) would be getting 203.222.100/24
>> from ISP1 and 155.169.22/24 from ISP2. Customers wants redundency by
>> asking ISP1 to advertise 155.69.22/24 and ISP2 to advertise
>> 203.127.100/24 as well.
>>
>> The reasons why it's an issue because
>>
>> 1) These customers are not running BGP. I understand that conditional
>> advertisment with BGP can solve the problem.
>> 2) These customers wants ISP1 to advertise IPA blk which belong to
>> other ISP2 and likewise for ISP2 to advertise ISP's IPA
>>
>> Well, currently there is now no mutual agreement with other ISPs to do
so.
>>
>> I would like to know :
>> 1) How will like to know how will it impact ISP1 and ISP2 in term of
>> routing advertisment,tables,etc ?
>> 2) Will ISP1 and ISP2 have problems of routing holes for advertising
>> routes belonging to other ISPs' ASes.
>>
>> I am not sure if there are any other technical implication.
>> How does other ISPs in US or other parts of the world
>> dual-homed their customers' who do not run BGP(only statics route)?
>> What are the pros/cons of doing/not doing this ??
>
>Here we plain refuse to do it.
>
>/Jesper
>
>--
>Jesper Skriver, jesper(at)skriver(dot)dk - CCIE #5456
>Work: Network manager @ AS3292 (Tele Danmark DataNetworks)
>Private: Geek @ AS2109 (A much smaller network ;-)
>
>One Unix to rule them all, One Resolver to find them,
>One IP to bring them all and in the zone to bind them.
>
>
This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:12:15 EDT