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packet loss question

Subject: packet loss question
From: bill at herrin.us (William Herrin)
Date: Thu, 7 Jul 2016 23:53:38 -0400
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]>

On Thu, Jul 7, 2016 at 3:52 PM, Ken Chase <math at sizone.org> wrote:
> ICMP is allowed to be dropped by intervening routers. Someone will quote an RFC
> at us shortly.

Hi Ken,

That's not correct. Routers might not generate an ICMP time-exceeded
packet for every packet whose TTL reaches zero, but that's not the
same thing. Routers dropping ICMP packets in transit would be bad.
Protocols like TCP depend on path MTU discovery and path MTU discovery
critically depends on ICMP.

Regards,
Bill Herrin

-- 
William Herrin ................ herrin at dirtside.com  bill at herrin.us
Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>

Follow-Ups:
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References:
- packet loss question
  - From: phillip.lynn at netwolves.com (Phillip Lynn)
- packet loss question
  - From: math at sizone.org (Ken Chase)

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