John,
Level3 will route the /24 registered to another provider. We will
need written permission from the owner of the block authorizing us to source
the route from Level3. A number of Level3's peers will not accept a /24.
This will prevent us from announcing this route to those providers.
Let me know if you have any problems,
Rob Baird
Level 3 Communications
-----Original Message-----
From: John Deatherage [mailto:[EMAIL PROTECTED]]
Sent: Monday, August 28, 2000 1:46 PM
To: [EMAIL PROTECTED]
Subject: BGP Multi-Homing
Does anyone know where I can find good whitepapers or configuration examples
of BGP in multi-homed environments? ARIN won't give out anything less than
a /21, but some providers won't advertise networks unless the IPs belong to
you. Just another situation where politics are as much of a part of an
engineer's job as everything else. Good thing we have VPs to slam providers
<cough> Level 3 <cough>
I've checked the archives and read recent posts by Howard Berkowitz (looking
forward to the whitepaper on Sept. 1st). Any other ideas???
This paragraph from Howard basically sums up what I'm discovering:
Depends on the policy of the particular ISP, even tier 1. Some
simply don't want to advertise any /24 that's not part of their
address space, some won't do it except for direct customers who have
negotiated to advertise provider-independent address space, some
might not be willing to negotiate to advertise an a more-specific
assignment of another provider's space, and some don't care.
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