3Com MSR 30, MSR 50 Ppp ipcp dns, Undo ppp chap user, Related command ppp authentication-mode

512CHAPTER 31: PPP AND MP CONFIGURATION COMMANDS

undo ppp chap user

View Interface view

Parameter username: Username of CHAP authentication, a string of 1 to 80 characters, which is the one sent to the peer device to be authenticated.

Description Use the ppp chap user command to configure the user name when performing CHAP authentication.

Use the undo ppp chap user command to delete the existing configuration.

By default, the user name of the CHAP authentication is blank.

While configuring CHAP authentication, you should configure the username of both ends as the local-userof its peer, and configure the password accordingly.

Related command: ppp authentication-mode.

Example # On interface Serial 1/0, configure the local username as Root when performing CHAP authentication

<Sysname> system-view

[Sysname] interface serial 1/0

[Sysname-Serial1/0] ppp chap user Root

ppp ipcp dns

Syntax ppp ipcp dns primary-dns-address [ secondary-dns-address ]

undo ppp ipcp dns primary-dns-address [ secondary-dns-address ]

View Interface view

Parameter primary-dns-address: IP address of the primary DNS server.

secondary-dns-address: IP address of the secondary DNS server.

Description Use the ppp ipcp dns command to set the device to allocate DNS server address for the peer.

Use the undo ppp ipcp dns command to disable the device to allocate DNS server address for the peer.

By default, the device does not allocate DNS server addresses for its peer.

When connected using PPP, a device can assign a DNS server address to its peer after negotiation (usually based on the request of the peer), allowing the peer to access the network directly using domain name.