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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
AiNET

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.

_k









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