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

Saku Ytti saku at ytti.fi
Mon May 14 19:32:07 EDT 2018

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.
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