Connectivity Guide

Table Of Contents
Vlan1
management
OS10# show ip vrf management
VRF-Name Interfaces
management
Supported Releases 10.4.0E(R1) or later
update-source-ip
Congures a source IP interface for any leaked route in a VRF instance.
Syntax
update-source-ip interface interface-id
To undo this conguration, use the no update-source-ip command.
Parameters
interface interface-id — Enter the loopback interface identier. The range is from 0 to 16383.
Default Not congured
Command Mode VRF CONFIGURATION
Example
OS10(conf-vrf)# update-source-ip loopback 1
Supported Releases 10.4.2E or later.
Bidirectional Forwarding Detection
The Bidirectional Forwarding Detection (BFD) protocol rapidly detects communication failures between two adjacent routers. BFD replaces
link-state detection mechanisms in existing routing protocols. It also provides a failure detection solution for links with no routing protocols.
BFD provides forwarding-path failure detection in milliseconds instead of seconds. Because BFD is independent of routing protocols, it
provides consistent network failure detection. BFD eliminates multiple protocol-dependent timers and methods. Networks converge is
faster because BFD triggers link-state changes in the routing protocol sooner and more consistently.
BFD is a simple hello mechanism. Two neighboring routers running BFD establish a session using a three-way handshake. After the session
is established, the routers exchange periodic control packets at sub-second intervals. If a router does not receive a hello packet within the
specied time, routing protocols are notied that the forwarding path is down.
In addition, BFD sends a control packet when there is a state change or change in a session parameter. These control packets are sent
without regard to transmit and receive intervals in a routing protocol.
BFD is an independent and generic protocol, which all media, topologies, and routing protocols can support using any encapsulation. OS10
implements BFD at Layer 3 (L3) and with User Datagram Protocol (UDP) encapsulation. BFD is supported on static and dynamic routing
protocols, such as VRRP, OSPF, OSPFv3, IS-IS, and BGP.
The system displays BFD state change notications.
NOTE
: In this release, BFD is only supported for the border gateway protocol (BGP).
300 Layer 3