Dhcpv6-Follow-Ipv6Cp - H3C MSR Series Command Reference Manual

Usage guidelines
This command takes effect only when the device acts as a PPPoE server or L2TP LNS.
A PPPoE or L2TP user might request multiple services of different IP address types. By default, the
device logs off the user if the user does not obtain an IPv4 address. This command enables the
device to allow the user to come online if the user has obtained IP addresses of all the specified
types for the basic services.
The device does not allow a PPPoE or L2TP user to come online if the user does not obtain IP
addresses of all the specified types for the basic services. For example, if you execute the
basic-service-ip-type ipv6 command, the device does not allow a PPPoE or L2TP user to come
online if the user does not obtain an IPv6 address.
If you specify both the ipv6 and ipv6-pd keywords, the device does not allow a PPPoE or L2TP user
that fails IPv6 address negotiation or PD negotiation to come online.
Examples
# In ISP domain test, specify PPPoE and L2TP users to rely on IPv4 addresses to use the basic
services.
<Sysname> system-view
[Sysname] domain test
[Sysname-isp-test] basic-service-ip-type ipv4

dhcpv6-follow-ipv6cp

Use dhcpv6-follow-ipv6cp to set the DHCPv6 request timeout timer for PPPoE and L2TP users.
Use undo dhcpv6-follow-ipv6cp to restore the default.
Syntax
dhcpv6-follow-ipv6cp timeout delay-time
undo dhcpv6-follow-ipv6cp
Default
The DHCPv6 request timeout timer for PPPoE and L2TP users is 60 seconds.
Views
ISP domain view
Predefined user roles
network-admin
Parameters
timeout delay-time: Specifies the DHCPv6 request timeout timer, in the range of 30 to 120 seconds.
Usage guidelines
This command takes effect only when the device acts as a PPPoE server or L2TP LNS.
After the device finishes IPv6CP negotiation with a PPPoE or L2TP user, PPP instructs DHCPv6 to
assign an IPv6 address to the user. The user cannot come online if the IP address assignment fails
within the DHCPv6 request timeout timer and the user basic service relies on an IPv6 address.
As a best practice, increase the DHCPv6 request timeout timer in the following situations:
•
The network communication is unstable.
•
The ISP domain serves a large number of PPPoE and L2TP users.
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