NX-OS parsing of 'show l2route' commands fail on version 22.7

[deep-blue-pulsar]

Parsing the commands below fail with the following exceptions: dev.parse("show l2route mac-ip all detail")

Traceback (most recent call last):
  File "/home/xxxxxx/myvenv/pyats_test.py", line 10, in <module>
    cmd = dev.parse("show l2route mac-ip all detail")
  File "src/genie/conf/base/device.py", line 528, in genie.conf.base.device.Device.parse
  File "src/genie/conf/base/device.py", line 567, in genie.conf.base.device.Device._get_parser_output
  File "src/genie/conf/base/device.py", line 565, in genie.conf.base.device.Device._get_parser_output
  File "src/genie/metaparser/_metaparser.py", line 308, in genie.metaparser._metaparser.MetaParser.parse
  File "/home/[REDACTED]/myvenv/lib/python3.9/site-packages/genie/libs/parser/nxos/show_vxlan.py", line 1579, in cli
    topo_dict.update({k:int(v) for k,v in group.items() })
  UnboundLocalError: local variable 'topo_dict' referenced before assignment

dev.parse("show l2route evpn mac-ip all")

Traceback (most recent call last):
  File "/home/xxxxxx/myvenv/pyats_test.py", line 10, in <module>
    cmd = dev.parse("show l2route evpn mac-ip all")
  File "src/genie/conf/base/device.py", line 528, in genie.conf.base.device.Device.parse
  File "src/genie/conf/base/device.py", line 567, in genie.conf.base.device.Device._get_parser_output
  File "src/genie/conf/base/device.py", line 565, in genie.conf.base.device.Device._get_parser_output
  File "src/genie/metaparser/_metaparser.py", line 329, in genie.metaparser._metaparser.MetaParser.parse
  File "src/genie/metaparser/_metaparser.py", line 322, in genie.metaparser._metaparser.MetaParser.parse
  File "src/genie/metaparser/util/schemaengine.py", line 233, in genie.metaparser.util.schemaengine.Schema.validate
genie.metaparser.util.exceptions.SchemaEmptyParserError: Parser Output is empty

[Taarini]

Hi

Thanks for reporting.

Could you please share the device output which caused the above issues.

Please share the os and platform along with it.

[deep-blue-pulsar]

Hi

Thanks for reporting.

Could you please share the device output which caused the above issues.

Please share the os and platform along with it.

Hi @Taarini,

Of course, here you go:

2022-08-29 10:34:58,148: %UNICON-INFO: +++ initializing handle +++

2022-08-29 10:34:59,028: %UNICON-INFO: +++ LEAF1 with via 'cli': executing command 'show l2route evpn mac-ip all' +++
show l2route evpn mac-ip all
Flags -(Rmac):Router MAC (Stt):Static (L):Local (R):Remote (V):vPC link
(Dup):Duplicate (Spl):Split (Rcv):Recv(D):Del Pending (S):Stale (C):Clear
(Ps):Peer Sync (Ro):Re-Originated (Orp):Orphan
Topology    Mac Address    Host IP                                 Prod   Flags
        Seq No     Next-Hops
----------- -------------- --------------------------------------- ------ ------
---- ---------- ---------------------------------------
10          0050.7966.6805 10.10.0.10                              HMM    L,
        0         Local
20          0050.7966.6808 10.20.0.120                             BGP    --
        0         10.0.0.4 (Label: 20)
LEAF1#
Traceback (most recent call last):
  File "/home/[redacted]/myvenv/pyats_test.py", line 10, in <module>
    cmd = dev.parse("show l2route evpn mac-ip all")
  File "src/genie/conf/base/device.py", line 528, in genie.conf.base.device.Device.parse
  File "src/genie/conf/base/device.py", line 567, in genie.conf.base.device.Device._get_parser_output
  File "src/genie/conf/base/device.py", line 565, in genie.conf.base.device.Device._get_parser_output
  File "src/genie/metaparser/_metaparser.py", line 329, in genie.metaparser._metaparser.MetaParser.parse
  File "src/genie/metaparser/_metaparser.py", line 322, in genie.metaparser._metaparser.MetaParser.parse
  File "src/genie/metaparser/util/schemaengine.py", line 233, in genie.metaparser.util.schemaengine.Schema.validate
genie.metaparser.util.exceptions.SchemaEmptyParserError: Parser Output is empty

Software
  BIOS: version
 NXOS: version 9.3(6)
  BIOS compile time:
  NXOS image file is: bootflash:///nxos.9.3.6.bin
  NXOS compile time:  11/9/2020 23:00:00 [11/10/2020 11:00:21]

Hardware
  cisco Nexus9000 C9300v Chassis

[Taarini]

Hi,

The reason you are getting "Parser Output is empty" because the regex pattern didn't match your output.

Sharing the example link of how we are currently parsing, https://github.com/CiscoTestAutomation/genieparser/blob/master/src/genie/libs/parser/nxos/tests/ShowL2routeMacIpAllDetail/cli/equal/golden_output1_output.txt

pyATS parser is community driven.

Please consider contributing to pyATS genie parser library.

Below is a link with instructions on how to write a parser: https://pubhub.devnetcloud.com/media/pyats-development-guide/docs/writeparser/writeparser.html

If you need any help, please let me know by creating a pull request for the above issue

[Taarini]

The issue will be closed within 3 business days if there is no reply

[deep-blue-pulsar]

I thought any parser listed here was already in a working state?

https://pubhub.devnetcloud.com/media/genie-feature-browser/docs/#/parsers

The "Parser Output is empty" results from the "show l2route evpn mac-ip all". The "detail" version of the command fails with the exception UnboundLocalError: local variable 'topo_dict' referenced before assignment.

[Taarini]

Yeah it is, but device output varies from devices which you use.

[Taarini]

No reply from user hence closing