[dev] DEFUN different from Quagga

Quentin Young qlyoung at cumulusnetworks.com
Tue Nov 14 12:13:43 EST 2017

Hello! You can find docs on the CLI implementation here:

https://github.com/FRRouting/frr/blob/master/doc/cli.md <https://github.com/FRRouting/frr/blob/master/doc/cli.md>

The differences in `argv` filling are also documented there.
Please let me know if you have any further questions that aren’t answered here or if something doesn’t make sense.

> On Nov 14, 2017, at 12:09 PM, Mostafa Salari <msgm68 at gmail.com> wrote:
> Hi
> I figured out that the syntax of DEFUN commands in FRR 3 is different from Quagga. I found this problem when i saw my old (Quagga based) code raise errors when copied in FRR!
> For example, it seems that ()  has no meaning or different interpretation! As another example i think argvs are counted for all words in the command not only variables! am i right?
> So i have 2 questions
> 1. Where can i find the differences of DEFUN in FRR?
> 2. A trouble!!! When i input the argvs in vtysh in a different order, I will take different argv values!!!!!!!
> For example: i have in DEFUN:
> "snmp-server group NAME <v1|v2c> {read WORD|write WORD|notify WORD|context WORD}"
> Now, in vtysh, if the user enters: 
> Router# snmp-server group g1 v1 write view1 read view2
> My DEFUN considers argv[5] as view1 and argv[7] as view2
> and if user enters:
> Router# snmp-server group g1 v1 read view2 write view1
> My DEFUN considers argv[7] as view1 and argv[5] as view2
> While in my DEFUN, i expect that snmp write view always to be (e.g.) argv[5]
> Please help.
> Thanks
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