H3C S6850 Series, Руководство по настройке

Страница: 91 / 394

31
To prevent traffic interruption, enable link-aggregation traffic redirection at both ends of the
aggregate link.
To prevent packet loss that might occur at a reboot, do not enable the spanning tree feature together
with link-aggregation traffic redirection.
Link-aggregation traffic redirection does not operate correctly on an edge aggregate interface.
Enabling link-aggregation traffic redirection globally
1. Enter system view.
system-view
2. Enable link-aggregation traffic redirection globally.
link-aggregation lacp traffic-redirect-notification enable
By default, link-aggregation traffic redirection is disabled globally.
Enabling link-aggregation traffic redirection for an
aggregation group
1. Enter system view.
system-view
2. Enter aggregate interface view.
{
Enter Layer 2 aggregate interface view.
interface bridge-aggregation interface-number
{
Enter Layer 3 aggregate interface view.
interface route-aggregation interface-number
3. Enable link-aggregation traffic redirection for the aggregation group.
link-aggregation lacp traffic-redirect-notification enable
By default, link-aggregation traffic redirection is disabled for an aggregation group.
Enabling BFD for an aggregation group
About BFD for Ethernet link aggregation
You can use BFD to monitor member link status in an aggregation group. After you enable BFD on
an aggregate interface, each Selected port in the aggregation group establishes a BFD session with
its peer port. BFD operates differently depending on the aggregation mode.
•
BFD on a static aggregation —When BFD detects a link failure, BFD notifies the Ethernet link
aggregation module that the peer port is unreachable. The local port is then placed in
Unselected state. However, the BFD session between the local and peer ports remains, and the
local port keeps sending BFD packets. When BFD on the local port receives packets from the
peer port upon link recovery, BFD notifies the Ethernet link aggregation module that the peer
port is reachable. Then, the local port is placed in Selected state again. This mechanism
ensures that the local and peer ports of a static aggregate link have the same aggregation state.
•
BFD on a dynamic aggregation —When BFD detects a link failure, BFD notifies the Ethernet
link aggregation module that the peer port is unreachable. At the same time, BFD clears the
session and stops sending BFD packets. When the local port is placed in Selected state again
upon link recovery, the local port establishes a new session with the peer port and BFD notifies
the Ethernet link aggregation module that the peer port is reachable. Because BFD provides
fast failure detection, the local and peer systems of a dynamic aggregate link can negotiate the
aggregation state of their member ports faster.