Deployment Guide

The preceding message shows that the user had previously logged in to the system using the VTY line
from 10.11.178.14. It also displays the number of unsuccessful login attempts since the last login and the
number of unsuccessful login attempts in the last 30 days.
$ telnet 10.11.178.14
Trying 10.11.178.14...
Connected to 10.11.178.14.
Escape character is '^]'.
Login: admin
Password:
Last successful login: 12:52:01 UTC Tue Mar 22 2016 on console
There were 2 unsuccessful login attempt(s) since the last successful
login.
There were 3 unsuccessful login attempt(s) for user admin in last 12
day(s).
There were 1 successful login attempt(s) for user admin in the last 30
day(s).
The preceding message shows that the user had previously logged in to the system using the console
line. It also displays the number of unsuccessful login attempts since the last login and the number of
unsuccessful login attempts during a custom time period.
Related
Commands
● login concurrent-session — configures the limit of concurrent sessions for all users on console and
virtual terminal lines.
● show login statistics — displays login statistics of users who have used the console or virtual terminal
lines to log in to the system.
ping
Test connectivity between the system and another device by sending echo requests and waiting for replies.
C9000 Series
Syntax
ping [host | ip-address | ipv6-address] [count {number | continuous}]
[datagram-size] [timeout] [source (ip src-ipv4-address) | interface] [tos]
[df-bit (y|n)] [validate-reply(y|n)] [outgoing-interface] [pattern pattern]
[sweep-min-size] [sweep-max-size] [sweep-interval] [ointerface (ip src-
ipv4-address) | interface]
Parameters
host (OPTIONAL) Enter the host name of the devices to which you are testing
connectivity.
ip-address (OPTIONAL) Enter the IPv4 address of the device to which you are testing
connectivity. The address must be in the dotted decimal format.
ipv6-address (OPTIONAL) Enter the IPv6 address, in the x:x:x:x::x format, to which you are
testing connectivity.
NOTE: The :: notation specifies successive hexadecimal fields of zeros.
count Enter the number of echo packets to be sent. The default is 5.
● number: from 1 to 2147483647
● continuous: transmit echo request continuously
datagram size Enter the ICMP datagram size. The range is from 36 to 15360 bytes. The default is
100.
timeout Enter the interval to wait for an echo reply before timing out. The range is from 0
to 3600 seconds. The default is 2 seconds.
source Enter the IPv4 or IPv6 source ip address or the source interface. For IPv6
addresses, you may enter global addresses only. Enter the IP address in A.B.C.D
format.
90 Control and Monitoring