Connectivity Guide

Layer 3
Bidirectional
forwarding detection
(BFD)
Provides rapid failure detection in links with adjacent routers (see BFD commands).
Border Gateway
Protocol (BGP)
Provides an external gateway protocol that transmits inter-domain routing information within and between
autonomous systems (see BGP Commands).
Equal Cost Multi-
Path (ECMP)
Provides next-hop packet forwarding to a single destination over multiple best paths (see ECMP Commands).
IPv4 Routing Provides forwarding of packets to a destination IP address, based on a routing table. This routing table denes how
packets are routed — dynamically, broadcasted directly to, using proxy ARP, as well as what type of information is
included with the packets (see IPv4 Routing Commands).
IPv6 Routing Provides routing for the IPv6 address space, stateless auto-conguration, header format simplications, and
improved support for options and extensions (see IPv6 Routing Commands).
Open Shortest Path
First (OSPF)
Provides a link-state routing protocol that communicates with all other devices in the same autonomous system
area using link-state advertisements (LSAs). OS10 supports up to 10,000 OSPF routes for OSPFv2 to designate up
to 8,000 routes as external, and up to 2,000 as inter/intra area routes (see OSPF Commands).
Virtual Router
Redundancy
Protocol (VRRP)
Provides a mechanism to eliminate a single point of failure in a statically routed network (see VRRP Commands).
Virtual Routing and
Forwarding (VRF)
Provides a mechanism to partition a physical router into multiple virtual routers (see VRF Commands).
Virtual routing and forwarding
VRF partitions a physical router into multiple virtual routers (VRs). The control and data plane are isolated in each VR; trac does not ow
across VRs. VRF allows multiple instances of routing tables to co-exist within the same router at the same time.
OS10 supports a management VRF instance, a default VRF instance, and a maximum of 128 non-default VRF instances. Use the default
and non-default VRF instances to congure routing.
You can move the management interface from the default to management VRF instance. You need not create the management VRF
instance as it already exists in the system by default.
By default, OS10 initially assigns all physical interfaces and all logical interfaces to the default VRF instance.
Congure management VRF
You can assign only management interfaces to the management VRF instance.
Before you assign the management interface to the management VRF instance, remove all the congured settings, including the IP
address, on the management interface.
1 Enter the ip vrf management command in CONFIGURATION mode. Use Non-Transaction-Based Conguration mode only. Do
not use Transaction-Based mode.
2 Add the management interface using the interface management command in VRF CONFIGURATION mode.
5
282 Layer 3