Switches Juniper

[Mark Tinka]

On Wednesday, October 19, 2011 12:10:14 AM Brielle Bruns 
wrote:

> We've got an m7i that we can't do IPv6 tunneling on
> because that's a 'extra feature' and not only requires a
> special board but extra license. Pretty much made sure I
> won't be using juniper products instead of
> Foundry/Brocade or Cisco.

You don't need a license to run v6 on an M7i/M10i router. 
You just need a Tunnel PIC.

The M7i normally comes with one (in-built) on the CFEB by 
default. If you don't have it, that's strange but it can be 
added after-the-fact via an ASM (Adaptive Services Module).

> It's beyond absurd.  Even my ancient cisco 2600s can do
> v6 tunneling and functionality with a v6 image and
> without needing a special board.

Unlike Cisco newer Juniper platforms, tunneling was not an 
integrated forwarding process in the Juniper systems, i.e., 
neither as part of the line card (until now) nor the 
software, hence the need for a Tunnel PIC to support 
tunneling.

Suffice it to say, on some Cisco hardware-based platforms, 
failure of hardware to forward transit traffic causes those 
packets to be forwarded by the CPU. For Juniper, it's all or 
nothing - if the hardware can't forward the packet, it's 
dropped and CPU can't do anything about it.

Mark.
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