![Huawei Quidway NetEngine40E Скачать руководство пользователя страница 176](http://html.mh-extra.com/html/huawei/quidway-netengine40e/quidway-netengine40e_configuration-manual-reliability_169453176.webp)
l
VRRP IPv6 TTL detection: A VRRP-enabled device checks the TTL in every received
VRRP Advertisement packet and discards the packets if the TTLs are not 255. On a network
with Huawei and non-Huawei devices, this function needs to be disabled to prevent packet
loss.
l
Sending ND packets carrying only the minimal inner VLAN ID: A QinQ termination sub-
interface sends ND packets with two tags and the inner tag is a range of VLAN IDs. To
ensure that switches connected to users learn the correct MAC address of the VRRP backup
group, the VRRP backup group on the QinQ termination sub-interface sends ND packets
to all VLANs identified by inner VLAN IDs. This increases the burden on the VRRP-
enabled device. To release the burden, the VRRP-enabled device can be configured to send
ND packets carrying only the minimal inner VLAN ID.
Procedure
l
Disable VRRP IPv6 TTL check.
1.
Run:
system-view
The system view is displayed.
2.
Run:
interface
interface-type
interface-number
The interface view is displayed.
3.
Run:
vrrp6 un-check hop-limit
The function to check TTLs in VRRP IPv6 Advertisement packets is disabled.
By default, TTLs in VRRP IPv6 Advertisement packets are checked. The
undo vrrp6
un-check hop-limit
command is used to enable this function.
4.
Run:
quit
The system view is displayed.
l
Configure the VRRP-enabled device to send ND packets carrying only the minimal inner
VLAN ID.
1.
Run:
interface
interface-type
interface-number
.subinterface-number
The view of an Ethernet sub-interface or Eth-Trunk sub-interface that is configured
with QinQ VLAN tag termination is displayed.
2.
Run:
vrrp6 nd send-mode simple
The QinQ termination sub-interface in the Master state is configured to send ND
packets carrying the outer VLAN ID and the minimal inner VLAN ID.
----End
4.8.5 (Optional) Configuring VRRP IPv6 Time Parameters
VRRP IPv6 time parameters can be configured to improve the VRRP IPv6 backup group's
capability to process VRRP Advertisement packets.
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
4 VRRP Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
159