topic Re: kex_exchange_identification: read: Connection reset by peer in DevNet Sandbox

kex_exchange_identification: read: Connection reset by peer

EvanC — Thu, 22 Jul 2021 02:10:58 GMT

I am running through this lab "Exploring IOS XE YANG Data Models with NETCONF"

when I try this command to ssh to the CSR1000V Host (sandbox-iosxe-recomm-1.cisco.com),

ssh -oHostKeyAlgorithms=+ssh-dss developer@sandbox-iosxe-recomm-1.cisco.com -p 830 -s netconf

The response is always:

kex_exchange_identification: read: Connection reset by peer

Is there anything wrong with my command?

Re: kex_exchange_identification: read: Connection reset by peer

EvanC — Thu, 22 Jul 2021 06:14:27 GMT

Ok, I try this host CSR1000v Host: sandbox-iosxe-latest-1.cisco.com and it works.

Re: kex_exchange_identification: read: Connection reset by peer

bigevilbeard — Thu, 22 Jul 2021 09:59:35 GMT

@EvanC you command is correct - i am unsure why there is such difference between the two XE device, i saw the same with REST also.

Re: kex_exchange_identification: read: Connection reset by peer

mschedrin — Thu, 22 Jul 2021 12:20:39 GMT

There's something definitely wrong with the lab. The host does not answer on ssh protocol, accessing it on https protocol gives nginx error "gateway timeout".

Cisco, please check the CSR.

Re: kex_exchange_identification: read: Connection reset by peer

bigevilbeard — Thu, 22 Jul 2021 14:35:59 GMT

@mschedrin i have checked this as of time 2:35 PM Thursday, July 22, 2021 Coordinated Universal Time (UTC) via ssh.

(venv) STUACLAR-M-R6EU:~ stuaclar$ ssh developer@sandbox-iosxe-recomm-1.cisco.com
Password:

Welcome to the DevNet Sandbox for CSR1000v and IOS XE

The following programmability features are already enabled:
  - NETCONF
  - RESTCONF

Thanks for stopping by.


csr1000v-1#

Re: kex_exchange_identification: read: Connection reset by peer

mschedrin — Thu, 22 Jul 2021 15:10:12 GMT

Right, ssh and netconf works now, however webinterface and restconf on port 443 still reply "502 Bad Gateway
nginx/1.13.12". I guess it's not supposed to be like that.

Re: kex_exchange_identification: read: Connection reset by peer

bigevilbeard — Thu, 22 Jul 2021 16:16:02 GMT

@mschedrin as noted above this version is showing issues when using RESTCONF. Recommend to use https://devnetsandbox.cisco.com/RM/Diagram/Index/7b4d4209-a17c-4bc3-9b38-f15184e53a94?diagramType=Topology

Hope this helps.