On Tue, Mar 17, 2009 at 13:51, Servet Erkün wrote:
> Nilesh is right I think , in juniper you specify only payload size ,
> in cisco you specify full frame size (ip header+icmp header+Payload)
On a Cisco-router:
router#ping 10.60.200.1 size 100 repeat 1
Type escape sequence to abort.
Sending 1
> Nilesh is right I think , in juniper you specify only payload size ,
> in cisco you specify full frame size (ip header+icmp header+Payload)
If you specify the MTU on the physical interface it definitely
includes L2 overhead. For example, this is a GigE link with 4470
IP MTU:
ge-0/2/0 {
mt
uesday, March 17, 2009 1:39 PM
Subject: Re: [j-nsp] MTU issues.
I think it is inversed, cisco add the IP headers to the size you specified,
and juniper include the IP header in the size you specified.
the problem appears when the packet arrives juniper interface with packet
size larger than the inte
: juniper-nsp@puck.nether.net
Sent: Monday, March 16, 2009 8:27:55 PM
Subject: Re: [j-nsp] MTU issues.
Cisco includes ip and icmp header size in the total specified packet
size. Payload in the case is 1510-20-8 = 1482 bytes. Juniper adds icmp
and ip header to the payload size you specify. So 1510
Cisco includes ip and icmp header size in the total specified packet
size. Payload in the case is 1510-20-8 = 1482 bytes. Juniper adds icmp
and ip header to the payload size you specify. So 1510 becomes 1538
bytes of ip packet.
Thanks,
Nilesh
On Mar 16, 2009, at 11:22 AM, "Flavio Schapp
Hi
Anybody have some explanation doc about MTU diferences between JUNIPER and
CISCO?
I think that I´m hitting some MTU issues where I have 2 ciscos working ping
with more them 1510 bytes and 2 Juniper or 1 juniper and 1 cisco are not
working.
Regards
Flavio
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