Internet Edge Router replacement - IPv6 route table size considerations

Julien Goodwin nanog at
Tue Mar 8 19:09:27 CST 2011

On 09/03/11 12:08, Julien Goodwin wrote:
> On 09/03/11 11:57, Chris Enger wrote:
>> I did look at a Juniper J6350, and the documentation states it can handle 400k routes with 1GB of memory, or 1 million with 2GB.  However it doesn’t spell out how that is divvyed up between the two based on a profile setting or some other mechanism.
> It's a software router so the short answer is "it isn't"
> With 3GB of RAM both a 4350 and 6350 can easily handle multiple IPv4
> feeds and an IPv6 feed (3GB just happens to be what I have due to
> upgrading from 1GB by adding a pair of 1GB sticks)
> If you need more then ~500Mbit or so then you would want something
> bigger. The MX80 is nice and has some cheap bundles at the moment; it's
> specced for 8M routes (unspecified, but the way Juniper chips typically
> store routes there's less difference in size then the straight 4x)
> From others the Cisco ASR1k or Brocade NetIron XMR (2M routes IIRC) are
> the obvious choices.
And I meant Brocade NetIron CES here.

More information about the NANOG mailing list