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RE: PMTU-D: remember, your load balancer is broken
From: John Fraizer <nanog () EnterZone Net>
Date: Thu, 15 Jun 2000 01:28:11 -0400 (EDT)

All of our systems come up defaulting to 1500 byte MTU as well.  We had
to manually set them to what we wanted if it wasn't 1500.

John Fraizer
EnterZone, Inc

On Wed, 14 Jun 2000, Deepak Jain wrote:

Then again, at least some Cisco gear doesn't think that.

perdition>sh in g0/1
GigabitEthernet0/1 is up, line protocol is up
  Hardware is Gigabit Ethernet, address is 00d0.7966.eeae (bia 00d0.7966.eeae)
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, rely 255/255, load 24/255

Deepak Jain

On Wed, 14 Jun 2000 jhsu () mur com wrote:

 : I thought the frame-size limits for Gigabit Ethernet were 64-1518/1522
 : bytes?  And isn't that the limit on most host IP stacks for Ethernet media?
 : Or am I off in left field, here?

for backbone applications, at least, many hardware vendors support
large frames [>1500] on GigE.


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