ssh配置登陆网络设备，拓扑如下：
R1配置
R1>enable
R1#conf t R1(config)#interface fastEthernet 0/0 R1(config-if)#ip address 10.33.10.1 255.255.255.0 R1(config-if)#no shutdown R1(config-if)#exit R1(config)#aaa new-model R1(config)#ip domain-name cisco.com R1(config)#username cisco password cisco R1(config)#crypto key generate rsa modulus 2048 The name for the keys will be: R1.cisco.com% The key modulus size is 2048 bits
% Generating 2048 bit RSA keys, keys will be non-exportable...[OK] R1(config)#line vty 0 15 R1(config-line)#transport input ssh R1(config-line)#exit至此R1的ssh配置配完可以正常使用
R4配置：R4>enable
R4#conf t R4(config)#interface fastEthernet 0/0 R4(config-if)#ip address 10.33.10.2 255.255.255.0 R4(config-if)#no shutdown R4(config-if)#exit R4(config)#exit R4#ping 10.33.10.1Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.33.10.1, timeout is 2 seconds: .!!!! Success rate is 80 percent (4/5), round-trip min/avg/max = 24/31/40 ms R4#telnet 10.33.10.1 Trying 10.33.10.1 ... % Connection refused by remote hostR4#ssh -l cisco 10.33.10.1
Password:
R1>en
% Error in authentication.R1>show
(此时发现R4虽然ssh登陆上了R1但是并不能进特权模式，因为R1上的enable password还没配置R1(config)#enab
R1(config)#enable pass R1(config)#enable password ciscoR4#ssh -l cisco 10.33.10.1
Password:
R1>enable
Password: R1#此时R4可以完全ssh进入R1了
注解：在R4上登陆的时候别犯小错误了，一定要用-l参数 并后跟用户名，ssh格式如此：ssh -l 用户名 IP地址
如果你这样操作就会出现错误提示：
R4#ssh 10.33.10.1
% No user specified nor available for SSH client R4#到此为止吧！