200
Ethernet subinterface view
Predefined user roles
network-admin
Parameters
adsl-forum: Specifies the ADSL forum vendor information.
cn-telecom: Specifies the China Telecom vendor information.
Examples
# Include China Telecom vendor information in the PPP accounting requests.
<Sysname> system-view
[Sysname] interface gigabitethernet 2/0/1
[Sysname–GigabitEthernet2/0/1] pppoe-server account-vendor cn-telecom
New feature: BFD for an aggregation group
Configuring BFD for an aggregation group
BFD for Ethernet link aggregation can 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 modes.
BFD for 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 placed in Unselected
state. The BFD session between the local and peer ports remains, and the local port keeps
sending BFD packets. When the link is recovered, the local port receives BFD packets from the
peer port, and BFD notifies the Ethernet link aggregation module that the peer port is reachable.
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 for dynamic aggregation—When BFD detects a link failure, BFD notifies the Ethernet
link aggregation module that the peer port is unreachable. BFD clears the session and stops
sending BFD packets. When the link is recovered and the local port is placed in Selected state
again, the local port establishes a new session with the peer port. 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.
For more information about BFD, see High Availability Configuration Guide.
Configuration restrictions and guidelines
When you enable BFD for an aggregation group, follow these restrictions and guidelines:
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