Dell Force10 TeraScale C Series, Справочное руководство

Страница: 1390 / 1640

1390 | SONET
www.dell.com | support.dell.com
Syntax loopback
{
internal
|
line
}
To delete a loopback setting, use the
no loopback
{
internal
|
line
} command.
Parameters
Defaults Not configured.
Command Modes INTERFACE
Usage
Information
Use the show config command in the INTERFACE mode to determine if the loopback command was
configured.
Related
Commands
ppp authentication
e
Enable Challenge-Handshake Authentication Protocol (CHAP) and/or Password Authentication
Protocol (PAP) authentication on the interface.
Syntax ppp authentication
{
chap
|
chap pap
|
pap
|
pap chap
}
To remove all PPP authentication, enter
no ppp authenticate
.
Parameters
Defaults
Not configured.
Command Modes
INTERFACE
Usage
Information
Once you configure this command, the remote device must prove its identity before the FTOS sends
traffic.
The two authentication types differ slightly:
• With CHAP authentication, the E-Series sends a challenge to the remote device, which must
encrypt the response with a shared value and return it to the E-Series with a username. The
E-Series checks the local database for a match on the shared value and username.
• With PAP authentication, the remote device must send a username/password set which the FTOS
checks against the local database. PAP passwords are sent as “clear text” and could be intercepted
and used.
internal
Enter the keyword
internal
to test the physical interface by sending incoming traffic
back through the interface.
line
Enter the keyword
line
to test connectivity to the network by sending incoming traffic
back to the network.
show config Display
the interface configuration.
chap
Enter the keyword
chap
to enable CHAP authentication only.
chap pap
Enter the keywords
chap pap
to enable CHAP on one side and PAP on the other.
pap
Enter the keyword
pap
to enable PAP authentication only.
pap chap
Enter the keywords
pap chap
to enable PAP on one side and CHAP on the other
side.