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North American Network Operators Group

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Re: - Please update your filters

  • From: Geoff Huston
  • Date: Wed Feb 26 10:00:53 2003

In return, would Covad please consider performing some meaningful form of route
aggregation or other measures to reduce the amount of noise that is being
passed across the global routing tables that originates from Covad?

suggests that Covad could withdraw some 483 BGP routing table entries,
reducing the total number of entires originated by Covad from 490
to an equivalent set of 8 aggregate routes.

Perhaps use of NO EXPORT when announcing the more specifics to your
upstream transit providers would be a globally helpful action to consider.


Geoff Huston

At 02:09 PM 2/25/2003 -0800, Hsu, Vicky wrote:

-----Original Message-----
From: Chan, KaLun
Sent: Thursday, February 20, 2003 4:18 PM
To: Chan, KaLun; DL NOC Managers; DL NOC-IP Services
Cc: Eisenhart, William; Minter, Daniel; DL Neteng-core-ip
Subject: RE: [ARIN-20030123.943] - who had this block before?


It has recently come to our attention that many Internet routers are still
filtering out IP addresses in the range. If YOU are still
filtering this block in your router, please modify your filters accordingly.
Thank You

IANA IPv4 Allocation List -
Bogon List - <>
Secure IOS Template -
Secure BGP Template -
Secure BIND Template -


Ka Lun Chan (KC)
Security Operation Center
COVAD Communication
SOC#: 866-722-2602
Dir #: 408-434-4919
Fax #: 408-434-2191
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