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one-liner config fails; two lines, ok

See original GitHub issue

Hi!

I have experienced that (sometimes) the onliner config failes. If I change that to a more specific two-line config, it passes ok. Let me show:

This fails: "/configure router interface test5 address 99.99.98.8/32\n"

This is what I see in the debug:

DEBUG:netmiko:Pattern is: \#\ SCRIPT_NONO_START
DEBUG:netmiko:_read_channel_expect read_data: # SCRIPT_NONO_START
*A:myRouter# 
DEBUG:netmiko:Pattern found: \#\ SCRIPT_NONO_START # SCRIPT_NONO_START
*A:myRouter# 
DEBUG:netmiko:write_channel: b'/environment no more\n'
DEBUG:netmiko:Pattern is: /environment\ no\ more
DEBUG:netmiko:_read_channel_expect read_data: /envi
DEBUG:netmiko:_read_channel_expect read_data: ronment no more 
*A:myRouter# 
DEBUG:netmiko:Pattern found: /environment\ no\ more /environment no more 
*A:myRouter# 
DEBUG:netmiko:write_channel: b'/configure router interface test5 address 99.99.98.8/32\n'
DEBUG:netmiko:Pattern is: /configure\ router\ interface\ test5\ address\ 99\.99\.98\.8/32
DEBUG:netmiko:_read_channel_expect read_data: /configure router interface test5[5D
DEBUG:netmiko:_read_channel_expect read_data: "test5[5D[5C" address 99.99.98.8/32 

DEBUG:netmiko:_read_channel_expect read_data: *A:
DEBUG:netmiko:_read_channel_expect read_data: myRouter# 
DEBUG:paramiko.transport:Sending global request "keepalive@lag.net"
DEBUG:paramiko.transport:Sending global request "keepalive@lag.net"
DEBUG:paramiko.transport:Sending global request "keepalive@lag.net"
DEBUG:paramiko.transport:Sending global request "keepalive@lag.net"
DEBUG:netmiko:write_channel: b'logout\n'

This works: "/configure router interface test5\naddress 99.99.98.8/32\n" (notice the \n in the middle to make it a two-line config). This is what I see in the debug:

DEBUG:netmiko:Pattern found: \#\ SCRIPT_NONO_START # SCRIPT_NONO_START
*A:myRouter# 
DEBUG:netmiko:write_channel: b'/environment no more\n'
DEBUG:netmiko:Pattern is: /environment\ no\ more
DEBUG:netmiko:_read_channel_expect read_data: /enviro
DEBUG:netmiko:_read_channel_expect read_data: nment no more 

DEBUG:netmiko:Pattern found: /environment\ no\ more /environment no more 

DEBUG:netmiko:Pattern is: (?:\*A:myRouter|#)
DEBUG:netmiko:_read_channel_expect read_data: *A:
DEBUG:netmiko:_read_channel_expect read_data: myRouter# 
DEBUG:netmiko:Pattern found: (?:\*A:myRouter|#) *A:myRouter# 
DEBUG:netmiko:write_channel: b'/configure router interface test5\n'
DEBUG:netmiko:Pattern is: /configure\ router\ interface\ test5
DEBUG:netmiko:_read_channel_expect read_data: /co
DEBUG:netmiko:_read_channel_expect read_data: nfigure router interface test5[5D"test5[5D[5C" 
*A:myRouter>config>router>if# 
DEBUG:netmiko:Pattern found: /configure\ router\ interface\ test5 /configure router interface test5[5D"test5[5D[5C" 
*A:myRouter>config>router>if# 
DEBUG:netmiko:write_channel: b'address 99.99.98.8/32\n'
DEBUG:netmiko:Pattern is: address\ 99\.99\.98\.8/32
DEBUG:netmiko:_read_channel_expect read_data: address 99.99.98
DEBUG:netmiko:_read_channel_expect read_data: .8/32 
*A:myRouter>config>router>if# 
DEBUG:netmiko:Pattern found: address\ 99\.99\.98\.8/32 address 99.99.98.8/32

For some reason, if I send the command as two lines, it works.

I’m using:

netmiko 3.4.0
send_config_set()
cmd_verify= True.
device_type = nokia_sros

Thanks! Lucas

Issue Analytics

State:
Created 2 years ago
Comments:8 (8 by maintainers)

Top GitHub Comments

1reaction

laimarettocommented, Sep 15, 2021

Good, no worries then. Having that in mind at least gives us a chance to modify the scripts, or disabling cmd_verify in order to make it work. Thanks!

0reactions

ktbyerscommented, Sep 16, 2021

Yeah, I think that is…that you should always use the canonical form of the configuration command or else Nokia SR-OS will re-write it to the canonical form.

So in the case without the quotes, Nokia SR-OS is re-writing the echoed command to be the canonical form (which is not what Netmiko is expecting since Netmiko is expecting an exact echo).

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