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CSCve85809%20-%20Prime%20Network%20SSH%20connection%20fails%20with%20%22no%20matching%20key%20exchange%20method%20found%22%20error%20on%20device.

RajeshRajput
Level 1
Level 1

Dear Genius friends.

 

 

I am trying to login to Nexus 9332PQ from jump server (Solaris  5.10 CSG CSS1.1.1      Model: Sun-Fire-T200)

 

when I ssh Nexus 9332PQ, its not logging in and  I am getting  below logs on jump server

 

jumps01% ssh -v 9332PQ
Sun_SSH_1.1, SSH protocols 1.5/2.0, OpenSSL 0x0090704f
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Rhosts Authentication disabled, originating port will not be trusted.
debug1: ssh_connect: needpriv 0
debug1: Connecting to 9332PQ [192.168.1.8] port 22.
debug1: Connection established.
Could not create directory '/home/user/.ssh'.
debug1: identity file /home/user/.ssh/identity type -1
debug1: identity file /home/user/.ssh/id_rsa type -1
debug1: identity file /home/user/.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.2 FIPS
debug1: match: OpenSSH_7.2 FIPS pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-Sun_SSH_1.1
debug1: Failed to acquire GSS-API credentials for any mechanisms (No credentials were supplied, or the credentials were unavailable or inaccessible
Unknown code 0
)
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-sha1 none
debug1: kex: client->server aes128-ctr hmac-sha1 none
no kex alg
debug1: Calling cleanup 0x3429c(0x0)
JumpS01%

 

 

Getting below logs in the switch

2018 Aug 11 11:54:44.852 9332PQ %DAEMON-2-SYSTEM_MSG: fatal: Unable to negotiate with 192.168.1.8 port 42341: no matching key exchange method found. Their offer: diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1 - dcos_sshd[20105]

 

 

Device details

 

Software
BIOS: version 07.59
NXOS: version 7.0(3)I4(7)
BIOS compile time: 08/26/2016
NXOS image file is: bootflash:///nxos.7.0.3.I4.7.bin
NXOS compile time: 6/28/2017 14:00:00 [06/29/2017 05:53:29]


Hardware
cisco Nexus9000 C9332PQ chassis
Intel(R) Core(TM) i3- CPU @ 2.50GHz with 16401396 kB of memory.

 

 

 

This is new installation with no extra config.

 

I am able to direcly ssh the devices, facing issues only when accessing devices from jump server 

 

Please advise so that I can sort out this issue.

 

Many thanks in advance.

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