/127 between routers?

[Scott Beuker]

The opposite was indicated to me by Cisco; that on the CRS-1 masks > 64
bits would slow the pps throughput of the ASIC. That statement would in
turn affect loopbacks, too... no more /128s? Meanwhile, 7600s were
explicitly mentioned as not being affected in this same way.

I think if you use anything other than /64s, there will be bumps on the
road ahead for you.

- Scott Beuker




> -----Original Message-----
> From: ipv6-ops-bounces+scott.beuker=sjrb.ca at lists.cluenet.de
> [mailto:ipv6-ops-bounces+scott.beuker=sjrb.ca at lists.cluenet.de] On
> Behalf Of Mark Kamichoff
> Sent: Sunday, January 10, 2010 10:43 AM
> To: Truman Boyes
> Cc: ipv6-ops at lists.cluenet.de
> Subject: Re: /127 between routers?
> 
> Hi Truman -
> 
> On Sat, Jan 09, 2010 at 01:40:28PM +1100, Truman Boyes wrote:
> > Juniper is definitely *not* recommending avoiding /64s. Do you have
a
> > pointer to where this information came from? I have performed
> > extensive testing of IPv6 forwarding/routing and /64's work just
fine.
> 
> Just rumors, mostly, no specific source.  It may have been one of
those
> corner cases (hopefully!) that won't be seen in most general
> deployments.  I've done some rudimentary lab testing with MXes using
> /64s as p-t-p links, too, and didn't see any issues.
> 
> Didn't mean to start a scare :)
> 
> - Mark
> 
> --
> Mark Kamichoff
> prox at prolixium.com
> http://www.prolixium.com/