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S
YSTEM
M
ANAGEMENT
C
OMMANDS
4-47
switch as described in the following section. Note that regardless of whether
you use public key or password authentication, you still have to generate
authentication keys on the switch and enable the SSH server.
To use the SSH server, complete these steps:
1. Generate a Host Key Pair – Use the ip ssh crypto host-key generate
command to create a host public/private key pair.
2. Provide Host Public Key to Clients – Many SSH client programs
automatically import the host public key during the initial connection
setup with the switch. Otherwise, you need to manually create a known
hosts file on the management station and place the host public key in it.
An entry for a public key in the known hosts file would appear similar to
the following example:
10.1.0.54 1024 35 15684995401867669259333946775054617325313674890836547254
15020245593199868544358361651999923329781766065830956 10825913212890233
76546801726272571413428762941301196195566782 59566410486957427888146206
51941746772984865468615717739390164779355942303577413098022737087794545240839717
52646358058176716709574804776117
3. Import Client’s Public Key to the Switch – Use the copy tftp public-key
command to copy a file containing the public key for all the SSH client’s
granted management access to the switch. (Note that these clients must
be configured locally on the switch with the username command as
described on page 4-35.) The clients are subsequently authenticated using
these keys. The current firmware only accepts public key files based on
standard UNIX format as shown in the following example for an RSA
Version 1 key:
1024 35 1341081685609893921040944920155425347631641921872958921143173880
05553616163105177594083868631109291232226828519254374603100937187721199696317813
66277414168985132049117204830339254324101637997592371449011938006090253948408482
71781943722884025331159521348610229029789827213532671316294325328189150453063939
16643 steve@192.168.1.19
4. Set the Optional Parameters – Set other optional parameters, including
the authentication timeout, the number of retries, and the server key size.