msr3600telnet配置不上去

password方式：
[RT1]interface g0/0
[RT1-GigabitEthernet0/0]ip address 202.0.0.1 24
[RT1-GigabitEthernet0/0]quit
[RT1]telnet server enable //开启远程登录
[RT1]sysname 123
[123]line vty 0 63
[123-line-vty0-63]undo user-role network-admin //删除undo
[123-line-vty0-63]authentication-mode password
[123-line-vty0-63]set authentication password simple 123
[123-line-vty0-63]user-role level-9
[123]super password role level-15 simple 12345

scheme方式：
[RT1]interface g0/0
[RT1-GigabitEthernet0/0]ip address 202.0.0.1 24
[RT1-GigabitEthernet0/0]quit
[RT1]telnet server enable //开启远程登录
[RT1]sysname 123
[123]line vty 0 63
[123-line-vty0-63]authentication-mode scheme
[123-line-vty0-63]quit
[123]local-user abc class manage
New local user added.
[123-luser-manage-abc]password simple abc
[123-luser-manage-abc]service-type telnet
[123-luser-manage-abc]authorization-attribute user-role network-admin
[123-luser-manage-abc]quit

安全性：只允许某个或某网段登录
[123]acl basic 2000
[123-acl-ipv4-basic-2000]rule permit source 202.0.0.2 0
[123-acl-ipv4-basic-2000]quit
[123]telnet server acl 2000