Brocade Communications Systems IP250 user manual Sw0FID128admin sshutil delknownhost

Firmware download using an external SCP server does not work after reinstalling the application or the external SCP server on the Host machine.

Brocade Network Advisor IP User Manual 53-1003056-01

due to the SCP/SFTP server preference (Options dialog box) being changed from built-in to external (installed on same machine) or vice versa

due to an external server reinstall

manually

For external SCP/SFTP server, the SSH handshake keypair is changed

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For internal SCP/SFTP server, the application was uninstalled and reinstalled without migration

Firmware download using SCP/SFTP does not work because of one of the following issues:

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Problem

Firmware download troubleshooting H

Resolution

Clear the SSH (SCP/SFTP) server IP address or hostname from the known_hosts table of the device.

•For Fabric OS devices, use the following command:

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sw0:FID128:admin> sshutil delknownhost

IP Address/Hostname to be deleted: SSH_server_IP_address

where SSH_server_IP_address is the IP address of the SSH server you want to delete.

For Network OS devices running firmware version 3.0 and later, use the following command:

sw0# clear ssh-keySSH_server_IP_address

where SSH_server_IP_address is the IP address of the SSH server you want to delete.

For Network OS devices running firmware version 2.1.1b, use the following command:

sw0# execute-script sshdeleteknownhost

IP Address/Hostname to be deleted: SSH_server_IP_address

where SSH_server_IP_address is the IP address of the SSH server you want to delete.

Clear the SCP server IP address or hostname from the known_hosts table of the device using the following command:

sw0# FID10:root> ssh-keygen –R Host_Name

where Host_Name is the IP address or host name of the external SCP server.

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