Configuring Bfd For Bgp4 - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
Received: Total 3 messages
Sent: Total 4 messages
Authentication type configured: None
Minimum route advertisement interval is 20 seconds
Optional capabilities:
Route refresh capability has been enabled
4-byte-as capability has been enabled
Peer Preferred Value: 0
Routing policy configured:
No routing policy is configured

9.6 Configuring BFD for BGP4+

By configuring BFD for BGP4+, you can provide a fast fault detection mechanism for BGP4+,
and therefore speed up network convergence.
9.6.1 Before You Start
Before configuring BFD for BGP4+, familiarize yourself with the usage scenario, complete the
pre-configuration tasks, and obtain the required data. This can help you complete the
configuration task quickly and accurately.
Applicable Environment
BFD can rapidly detect IPv6 forwarding failures. By adopting the BFD fast detection
mechanism, an IPv6 network can transmit voice services, video services, and VoD services with
high QoS. This enables service provides to provide their customers with highly available and
reliable voice over IP (VoIP) and other real-time services.
BGP periodically sends Keepalive messages to the peer to detect faults on the neighbor. This
mechanism, however, takes more than one second to detect a fault. When the data rate is up to
Gbit/s, the detection mechanism causes a great packet loss. This mechanism fails to meet the
requirement on the reliability of core networks.
BGP introduces BFD for BGP4+. The fast detection mechanism of BFD can faster detect faults
on the links between BGP peers. The convergence of networks therefore speeds up.
Pre-configuration Tasks
Before configuring BFD for BGP4+, complete the following tasks:
Issue 02 (2014-09-30)
Peer optional capabilities:
Peer supports bgp multi-protocol extension
Peer supports bgp route refresh capability
Peer supports bgp 4-byte-as capability
Address family IPv6 Unicast: advertised and received
Update messages
Open messages
KeepAlive messages
Notification messages
Refresh messages
Update messages
Open messages
KeepAlive messages
Notification messages
Refresh messages
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9 BGP4+ Configuration
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