Cisco Catalyst 3750-E User Manual

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Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-08
Chapter 9 Configuring Switch-Based Authentication
Configuring the Switch for Secure Shell
3. Configure user authentication for local or remote access. This step is required. For more
information, see the “Configuring the Switch for Local Authentication and Authorization” section
on page 9-43.
Beginning in privileged EXEC mode, follow these steps to configure a hostname and an IP domain name
an
d to generate an RSA key pair. This procedure is required if you are configuring the switch as an SSH
server.
To delete the RSA key pair, use the cr
ypto key zeroize rsa global configuration command. After the
RSA key pair is deleted, the SSH server is automatically disabled.
Configuring the SSH Server
Beginning in privileged EXEC mode, follow these steps to configure the SSH server:
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
hostname hostname Configure a hostname for your switch.
Step 3
ip domain-name domain_name Configure a host domain for your switch.
Step 4
crypto key generate rsa Enable the SSH server for local and remote authentication on the switch
and generate an RSA key pair.
We recommend that a minimum modulus size of 1024 bits.
When you generate RSA keys, you are prompted to enter a modulus
l
ength. A longer modulus length might be more secure, but it takes longer
to generate and to use.
Step 5
end Return to privileged EXEC mode.
Step 6
show ip ssh
or
show ssh
Show the version and configuration information for your SSH server.
Show the status of the SSH server on the switch.
Step 7
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
ip ssh version [1 | 2] (Optional) Configure the switch to run SSH Version 1 or SSH Version 2.
• 1—Configure the switch to run SSH Version 1.
• 2—Configure the switch to run SSH Version 2.
If you do not enter this command or do not specify a keyword, the SSH
se
rver selects the latest SSH version supported by the SSH client. For
example, if the SSH client supports SSHv1 and SSHv2, the SSH server
selects SSHv2.

Cisco Catalyst 3750-E Specifications

General

Series	Catalyst 3750-E
Switching Capacity	32 Gbps
Stacking Bandwidth	32 Gbps
StackWise Plus	Yes
Layer Support	Layer 3
MAC Address Table Size	12, 000 entries
RAM	256 MB
Flash Memory	64 MB
Memory	256 MB DRAM, 64 MB Flash
Operating Temperature	32 to 113°F (0 to 45°C)
Ports	48 10/100/1000 Ethernet ports
Form Factor	Rack-mountable
Jumbo Frame Support	Yes
Input Voltage	100 to 240 VAC
Storage Temperature	-25 to 70 °C
Relative Humidity	10 to 90% non-condensing