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This chapter describes how to configure Telnet on Nexus 1000V and includes the following topics:
•Information About the Telnet Server
•Verifying the Telnet Configuration
The Telnet protocol enables you to set up TCP/IP connections to a host. Telnet allows a person at one site to establish a TCP connection to a login server at another site and then passes the keystrokes from one device to the other. Telnet can accept either an IP address or a domain name as the remote device address.
Note On Nexus 1000V, the Telnet server is enabled by default.
Telnet has the following prerequisites:
•You have configured IP on a Layer 3 interface, out-of-band on the mgmt 0 interface, or inband on an Ethernet interface.
•By default, the Telnet server is enabled.
Note Be aware that the Nexus 1000V commands might differ from the Cisco IOS commands.
This section includes the following topics:
•Starting an IP Telnet Session to a Remote Device
Use this procedure to enable the Telnet server. The Telnet server is enabled by default, but you can use this procedure to re-enable it if necessary.
Before beginning this procedure, you must know or do the following:
•You are logged in to the CLI in EXEC mode.
•By default, the Telnet server is enabled.
1. config t
2. telnet server enable
3. exit
4. show telnet server
5. copy running-config startup-config
Use this procedure to start a Telnet session to a remote device.
Before beginning this procedure, you must know or do the following.
•You are logged in to the CLI in EXEC mode.
•You have verified that the Telnet server is enabled on the remote device.
•You have already obtained the hostname for the remote device and, if needed, the username on the remote device.
•You have already verified that the Telnet server on the Nexus 1000V is enabled. If not you have enabled it using the "Enabling the Telnet Server" procedure. By default, the Telnet server is enabled.
1. telnet {ip address | hostname} [port-number] [vrf vrf-name]
Use this procedure to clear Telnet sessions.
Before beginning this procedure, you must know or do the following.
•You are logged in to the CLI in EXEC mode.
1. show users
2. clear line vty-line
Example:
n1000v# show users
NAME LINE TIME IDLE PID COMMENT
admin tty1 Jul 25 19:13 old 2867
admin pts/1 Jul 28 14:04 . 31453 (::ffff:171.70.209.8)
admin pts/2 Jul 28 14:04 . 31475 (171.70.209.8)*
n1000v# clear line 1
n1000v# show users
NAME LINE TIME IDLE PID COMMENT
admin tty1 Jul 25 19:13 old 2867
admin pts/2 Jul 28 14:04 . 31475 (171.70.209.8)*
n1000v#
To display the Telnet configuration information, use one of the following commands:
Example:
n1000v# show running-config security all
version 4.0(1)
username admin password 5 $1$xMw2Q/1S$ZEWRvyAxAJAFV0weuSPvg1 role network-admin
username user2 password 5 $1$byNNnnSP$xfXVKjE5UEScvriwX3Kyj0 role network-operator
username user2 sshkey ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAyKcb7Nv9Ki1OOId9/tdHHa/ngQujlvK5mXyL/n+DeOXKfVhHbX2a+V0cm7CCLU kBh+BvZRmpmOVTmU/5awfVhVxMKXMiPOPBc+A6/n3FVroyRwupMki6mW
oM6UwaGID5gsVPqFjFNSgMWtbhjo97XVKhgjFW+wOVt8QoAcrEtnwEfsnQk1EIr/0XIP1mqTsrqTsmjZ2vLk+fFzTG YAxMvYZI+BrN47aoH2ywS7CpnODjCDXJuDYSPbc3PA8t0ghU/60m9R+s6AZPuljVQbGfxPrahEu4GVc6sMJNU1
JxmqDJkodhMArObB4Umzj7E3Rdby/ZWx/clTYiXQR1X1VfhQ==
telnet server enable
banner motd # User Access Verification #
ssh key rsa 1024 force
no ssh key dsa force
ssh server enable
The following table lists the default setting for Telnet.
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|
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Telnet server |
Disabled. |
For additional information related to implementing RBAC, see the following sections:
|
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SSH |
|
CLI |
Cisco Nexus 1000V Getting Started Guide, Release 4.0(4)SV1(1) |
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|
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No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature. |
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This section provides the Telnet release history.
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|
|
---|---|---|
Telnet |
4.0 |
This feature was introduced. |