No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

NE40E-M2 V800R010C10SPC500 Feature Description - User Access 01

This is NE40E-M2 V800R010C10SPC500 Feature Description - User Access
Rate and give feedback :
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
IPv6 Unicast Forwarding Control

IPv6 Unicast Forwarding Control

This section describes the different roles of NE40Es as broadband remote access servers (BRASs), Dynamic Host Configuration Protocol version 6 (DHCPv6) servers, and DHCPv6 relay agents respectively in Internet Protocol version 6 (IPv6) unicast forwarding control.

On the network shown in Figure 9-10, Device-1 and Device-2 function as BRASs and run redundancy user information (RUI). A Virtual Router Redundancy Protocol (VRRP) backup group is configured for the two Devices, with Device-1 as the master and Device-2 as the backup. When the link between the switch (SW) and Device-1 goes faulty, the fault triggers a master/backup VRRP switchover. Then, Device-2 becomes the master and starts neighbor discovery (ND) detection, and Device-1 becomes the backup and stops the ND detection. If the link-local address or MAC address on an interface of Device-2 is different from that of an interface on Device-1, some users will go offline, or some user packets will be discarded.

Figure 9-10 Active link fault on the access side

To prevent a user from detecting the active link fault, Device-2 must use the same link-local address and MAC address as those of Device-1.

  • Link-local address generation

    When an Device sends ND packets, its source IP address must be filled with a link-local address.

    After RUI is enabled on the Devices, the master and backup BRASs generate the same link-local address using the virtual MAC address of the VRRP backup group. The link-local address is generated automatically, which is convenient for users.

  • Protection tunnel forwarding

    An address pool backup allows the master and backup BRASs to have the same MAC address. Address pool backup in IPv6 unicast forwarding control is similar to that in IPv4 unicast forwarding control. For details, see chapter IPv4 Unicast Forwarding Control

    IPv6 unicast forwarding allows the Devices to control traffic through multiprotocol label switching (MPLS) label switched paths (LSPs) and supports simplified protection tunnel configuration, requiring only MPLS LSPs for virtual private networks (VPNs). Each VPN swaps its forwarding labels using a Huawei-proprietary protocol, avoiding the need to configure the Border Gateway Protocol (BGP) on the Devices.

Download
Updated: 2019-01-02

Document ID: EDOC1100058415

Views: 12079

Downloads: 8

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next