[j-nsp] "show ip cef exact-route"

[Nikolas Geyer]

The benefit of exact-route is it lets you input the 5 tuples to see what egress link a packet will get hashed onto, which is useful when doing LACP bundles or ECMP.

Sent from my iPhone

> On 14 May 2018, at 8:22 pm, Aaron Gould <aaron1 at gvtc.com> wrote:
> 
> Cisco and iOS xr has been good for me... Show cef (vrf xyz) .....
> 
> Isn't Junos equivalent for showing FIB/PFE "show route forwarding...." ?  This usually is good for me too
> 
> Aaron
> 
>> On May 14, 2018, at 6:35 PM, Nikolas Geyer <nik at neko.id.au> wrote:
>> 
>> The platforms I have used it on it has been correct, but that doesn’t include ASR9k.
>> 
>> Scary to think what you have said could happen, but I guess I shouldn’t be surprised.
>> 
>> Sent from my iPhone
>> 
>>> On 14 May 2018, at 7:32 pm, Saku Ytti <saku at ytti.fi> wrote:
>>> 
>>> Have you found cef exact-route to be correct?
>>> 
>>> Last time I used this (ASR9000), it was giving wrong results to me. I
>>> think there is entirely separate piece of code for LAG result in
>>> software code and the CSCO EZChip microcode, and different people code
>>> IOS-XR than ezchip, so I think there is failure mode where one code is
>>> updated, and another is not, I hope I'm wrong.
>>> 
>>> But if I'm right, then the only way to do this, is actually ask the
>>> microcode 'hey i have this packet, do a lookup for it', or like in
>>> CAT7600/ELAM, get lookup results for real traffic.
>>> 
>>>> On 15 May 2018 at 02:27, Nikolas Geyer <nik at neko.id.au> wrote:
>>>> Unless it’s changed in newer releases there is no equivalent which is annoying.
>>>> 
>>>> I believe you can drop to the FPC vty and extract the information card by card similar to the link you shared, but it’s not exactly a workable solution, nor “officially supported” by Juniper.
>>>> 
>>>> The lack of this command is literally my biggest frustration with Juniper.
>>>> 
>>>> Sent from my iPhone
>>>> 
>>>>> On 11 May 2018, at 4:40 am, James Bensley <jwbensley at gmail.com> wrote:
>>>>> 
>>>>> Hi All,
>>>>> 
>>>>> Does anyone know of a command like the Cisco CEF "exact-route" command
>>>>> on Juniper?
>>>>> 
>>>>> I've seen this older thread: https://lists.gt.net/nsp/juniper/50645
>>>>> 
>>>>> Which links to a post on using JSIM but for DPC cards, but I'm
>>>>> interested in MPC cards:
>>>>> http://junosandme.net/article-junos-load-balancing-part-3-troubleshooting-109382234.html
>>>>> 
>>>>> Does anyone have any details on using JSIM on MPC cards on MX
>>>>> platforms? Or is there "another way" ?
>>>>> 
>>>>> I'm going to open a JTAC case as well as asking here however, in the
>>>>> past they have rejected requests to explain PFE commands to me or
>>>>> provide documentation for them. I have managed it a few times but only
>>>>> after a couple of weeks of non-stop screaming. So I'm not holding my
>>>>> breath for that option.
>>>>> 
>>>>> Kind regards,
>>>>> James.
>>>>> _______________________________________________
>>>>> juniper-nsp mailing list juniper-nsp at puck.nether.net
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>>> 
>>> 
>>> 
>>> -- 
>>> ++ytti
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