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CHAPTER 8
Configuring Protocols
Configuring the BFD Protocol (NSM Procedure)
Copyright © 2010, Juniper Networks, Inc.
This section contains the following:
Configuring the BFD Protocol (NSM Procedure) on page 87
Configuring BGP (NSM Procedure) on page 88
Configuring GVRP (NSM Procedure) on page 93
Configuring IGMP (NSM Procedure) on page 94
Configuring LLDP (NSM Procedure) on page 97
Configuring LLDP-MED (NSM Procedure) on page 98
Configuring MSTP (NSM Procedure) on page 99
Configuring OSPF (NSM Procedure) on page 101
Configuring RIP (NSM Procedure) on page 105
Configuring STP (NSM Procedure) on page 108
Configuring VSTP (NSM Procedure) on page 110
Configuring VRRP (NSM Procedure) on page 112
The Bidirectional Forwarding Detection (BFD) protocol is used to detect the failures in
a network. The BFD protocol is independent of the underlying transport mechanisms and
layers; hence the failure detection timers for BFD have shorter time limits than the failure
detection mechanisms of other protocols like OSPF and IS-IS. Each session of the BFD
operates in two modes, asynchronous mode and demand mode. In asynchronous mode,
both endpoints periodically send Hello packets to each other. If a number of those packets
are not received, the session is considered down. In demand mode, no Hello packets are
exchanged after the session is established; it is assumed that the endpoints have another
way to verify connectivity to each other.
To configure BFD:
87
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