[j-nsp] Juniper Ethernet MTU question

[Harry Reynolds]

AFAIK only the dense FE pics have a 1532 MTU limitation. You should be
able to configure jumbo support as needed, and at least 1526 is needed
for three labels.
 
Regards
 


________________________________

	From: Ihsan Junaidi Ibrahim [mailto:ihsan.junaidi at gmail.com] 
	Sent: Thursday, October 05, 2006 6:06 PM
	To: Harry Reynolds
	Cc: Juniper-NSP
	Subject: Re: [j-nsp] Juniper Ethernet MTU question
	
	
	We plan to have a CSC (carrier-supporting-carrier) arrangement
with another ISP where we have a few M7is (with the 2 FE built-in) to
interconnect with our customer and to our provider PE router. In short,
we are PE to our customer's and a CE to our provider. We are going to be
carrying our customer VRFs across third party network. I presume in this
case that we will be carrying 2 labels and our provider will stamp their
label ontop on our packets? Should we be concern of the MTU sizing on
the FE PIC. I can't seem to find the built-in FEs specs on your website.

	
	
	On 10/1/06, Harry Reynolds <harry at juniper.net> wrote: 

		Three labels are typically seen in carrier of carrier
apps. Normal
		l2/l3/vpls vpn is 2 labels (8 bytes), and as I mentioned
the optional
		martini control word (applicable to l2circuits), adds
another 4 bytes
		when enabled. 
		


	-- 
	Thank you for your time,
	Ihsan Junaidi Ibrahim