[j-nsp] SRX, UDP traffic, routing asymmetry

叶雨飞 sunyucong at gmail.com
Thu Dec 6 20:20:42 EST 2012


you can run your main routing instance in flow mode , and apply
filters to send those into other VRs (flow or not) for further
processing.

On Thu, Dec 6, 2012 at 4:45 PM, Caillin Bathern <caillinb at commtelns.com> wrote:
> Sigh..  If only there was "selective flow mode" on the SRX/J...
>
> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net
> [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Per Westerlund
> Sent: Friday, 7 December 2012 4:24 AM
> To: Phil Mayers; Dale Shaw
> Cc: juniper-nsp at puck.nether.net
> Subject: Re: [j-nsp] SRX, UDP traffic, routing asymmetry
>
> This is a flow mode configuration (Juniper calls it "router mode", not
> "packet mode"), that emulates pure packet mode by allowing all packets
> to start a flow, and having a default permit-all for all flows.
>
> The sole reason for having this is to enable flow-mode things like IPsec
> and NAT at the same time as having almost the same behavior as pure
> packet mode.
>
> I am working on another mail or two with examples of "selective packet
> mode" that I believe might solve Dale's original problem (and perhaps
> his quest for pure routing with IPsec).
>
> /Per
>
> 6 dec 2012 kl. 14:15 skrev Phil Mayers:
>
>> On 06/12/12 10:58, Per Westerlund wrote:
>>> To follow up my own post (even more to follow), here is the config
>>> you use on a J-series router to put it in router-mode. Nothing magic,
>
>>> just some configuration. This will work with SRX as well, there is
>>> nothing J-series specific in here. This config is found in
>>> /etc/config/jsr-series-routermode-factory.conf, and the box I picked
>>> it from was running Junos 10.2R4.8
>>
>> Is this *actually* in router mode, or is it just in a permit-all flow
> mode?
>>
>> In particularly, you seem to be missing a "packet-mode" statement for
>> IPv4 or MPLS (which also disables flow mode for IPv4)
>>
>> What does "show security flow status" say?
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>
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