Protocols And Standards; Configuring Bfd Basic Functions; Configuring Echo Packet Mode - HP MSR Series Configuration Manual

MPLS. For more information, see MPLS Configuration Guide.
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Track. For more information, see "Configuring Track."
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IP fast reroute (FRR). IP FRR is supported by BGP, OSPF, RIP, IS-IS and static routing. For more
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information, see Layer 3—IP Routing Configuration Guide.
FRR. For more information, see MPLS Configuration Guide.
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MPLS L3VPN FRR. For more information, see MPLS Configuration Guide.
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Protocols and standards

RFC 5880, Bidirectional Forwarding Detection (BFD)
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RFC 5881, Bidirectional Forwarding Detection (BFD) for IPv4 and IPv6 (Single Hop)
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RFC 5882, Generic Application of Bidirectional Forwarding Detection (BFD)
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• RFC 5883, Bidirectional Forwarding Detection (BFD) for Multihop Paths
• RFC 5884, Bidirectional Forwarding Detection (BFD) for MPLS Label Switched Paths (LSPs)
RFC 5885, Bidirectional Forwarding Detection (BFD) for the Pseudowire Virtual Circuit Connectivity
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Verification (VCCV)

Configuring BFD basic functions

Before configuring BFD basic functions, configure the network layer addresses of the interfaces so that
adjacent nodes are reachable to each other at the network layer.
After a BFD session is established, the two ends negotiate BFD parameters, including minimum sending
interval, minimum receiving interval, initialization mode, and packet authentication, by exchanging
negotiation packets. They use the negotiated parameters without affecting the session status.
BFD session flapping might occur on an aggregate interface with member ports on different cards.
When the card that receives and sends BFD packets is removed or restarted, the backup card might not
immediately take over. For example, the backup card will not take over when the card has a short
detection time or a large number of BFD sessions.
By default, the device runs BFD version 1 and is compatible with BFD version 0. You cannot change the
BFD version to 0 through commands. When the peer device runs BFD version 0, the local device
automatically switches to BFD version 0.

Configuring echo packet mode

Step
1. Enter system view.
Command
system-view
66
Remarks
N/A