nanog mailing list archives
Re: Authoritative Resources for Public DNS Pinging
From: Brian Knight via NANOG <nanog () nanog org>
Date: Thu, 10 Feb 2022 14:20:35 -0600
On 2022-02-10 11:42, John Todd wrote:
"The Prudent Mariner never relies solely on any single aid to navigation"
It's best to ping multiple targets, and take action only if all targets do not return replies.
For route tracking a la $VENDOR_C's IP SLA, if possible, we'll ping next-hop IP, one target on our network, and one off our network. Withdraw the default route only if all three targets fail to return replies.
John Todd - jtodd () quad9 net General Manager - Quad9 Recursive Resolver
./btk
Current thread:
- Re: Authoritative Resources for Public DNS Pinging, (continued)
- Re: Authoritative Resources for Public DNS Pinging Mark Tinka (Feb 09)
- Re: Authoritative Resources for Public DNS Pinging Joe Greco (Feb 09)
- Re: Authoritative Resources for Public DNS Pinging Mark Delany (Feb 09)
- Re: Authoritative Resources for Public DNS Pinging Joe Greco (Feb 09)
- Re: Authoritative Resources for Public DNS Pinging Mark Delany (Feb 09)
- Re: Authoritative Resources for Public DNS Pinging Mike Hammett (Feb 10)
- Re: Authoritative Resources for Public DNS Pinging Mark Tinka (Feb 11)
- Re: Authoritative Resources for Public DNS Pinging Lukasz Bromirski (Feb 09)
- Message not available
- Re: Authoritative Resources for Public DNS Pinging J. Hellenthal via NANOG (Feb 09)
- Re: Authoritative Resources for Public DNS Pinging Brian Knight via NANOG (Feb 10)
- Re: Authoritative Resources for Public DNS Pinging Mark Tinka (Feb 11)
- Re: Authoritative Resources for Public DNS Pinging Mark Tinka (Feb 11)
- Re: Authoritative Resources for Public DNS Pinging Kord Martin (Feb 11)