[j-nsp] FEB/FPC Complexity

[raymondh (NSP)]

A maximum of two Type 1 FPCs and one Type 2 or Type 3 compact FPC can  
be mapped per FEB.
Do the math. Each FEB can hold up to 20G.

To achieve to the N+1 concept, you'll need to do some basic math and  
FPC selection / PIC (Good to have or need to have / alternative  
solution).

A general concept of the math (related to some other questions).
https://puck.nether.net/pipermail/juniper-nsp/2009-February/012466.html


--raymondh

On Apr 6, 2009, at 10:53 PM, Andrew Jimmy wrote:

> I come to know that M120 can provide N:1 FEB redundancy.
>
>
>
> As per juniper DOCS, A FEB redundancy group is a named collection of  
> two or
> more Forwarding Engine Boards (FEBs) that can improve interface
> availability. You can design your redundant FEB configuration to  
> provide
> backup on a one-to-one basis, or you can provide one backup for  
> multiple
> FEBs. Each FEB redundancy group can contain only one primary FEB.
>
>
>
> Can someone write some text about primary FEB and secondary FEBs,  
> what is
> the difference? What if you have two  FEBs type 1 along with two  
> FPCs type
> 1, Is it possible to use both FEBs for each FPC 1+1 while both FEBs  
> are
> acting active/standby to each other so if one FEB goes offline the  
> other can
> serve both FPCs. If yes, can some help in configuring this.
>
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