Ipv4; Ip Services; Ospf; Eigrp - Cisco Nexus 3000 Series Configuration Manual

Chapter 1 Overview
S e n d d o c u m e n t c o m m e n t s t o n e x u s 3 k - d o c f e e d b a c k @ c i s c o . c o m

IPv4

Layer 3 uses the IPv4 protocol. For more information, see

IP Services

IP Services includes Dynamic Host Configuration Protocol (DHCP) and Domain Name System (DNS
Client) clients. For more information, see

OSPF

The OSPF protocol is a link-state routing protocol used to exchange network reachability information
within an autonomous system. Each OSPF router advertises information about its active links to its
neighbor routers. Link information consists of the link type, the link metric, and the neighbor router
connected to the link. The advertisements that contain this link information are called link-state
advertisements. For more information, see

EIGRP

The EIGRP protocol is a unicast routing protocol that has the characteristics of both distance vector and
link-state routing protocols. It is an improved version of IGRP, which is a Cisco proprietary routing
protocol. EIGRP relies on its neighbors to provide the routes, typical to a distance vector routing
protocol. It constructs the network topology from the routes advertised by its neighbors, similar to a
link-state protocol, and uses this information to select loop-free paths to destinations. For more
information, see

BGP

The Border Gateway Protocol (BGP) is an inter-autonomous system routing protocol. A BGP router
advertises network reachability information to other BGP routers using Transmission Control Protocol
(TCP) as its reliable transport mechanism. The network reachability information includes the destination
network prefix, a list of autonomous systems that needs to be traversed to reach the destination, and the
next-hop router. Reachability information contains additional path attributes such as preference to a
route, origin of the route, community and others. For more information, see
Basic BGP"

RIP

The Routing Information Protocol (RIP) is a distance-vector protocol that uses a hop count as its metric.
RIP is widely used for routing traffic in the global Internet and is an Interior Gateway Protocol (IGP),
which means that it performs routing within a single autonomous system. For more information, see
Chapter 7, "Configuring RIP."

Static Routing

Static routing allows you to enter a fixed route to a destination. This feature is useful for small networks
where the topology is simple. Static routing is also used with other routing protocols to control default
routes and route distribution. For more information, see
Chapter 4, "Configuring EIGRP."
and Chapter 6, "Configuring Advanced BGP."
Cisco Nexus 3000 Series NX-OS Unicast Routing Configuration Guide, NX-OS Release 5.0(3)U1(1)
Summary of Layer 3 Unicast Routing Features
Chapter 2, "Configuring IPv4."
Chapter 3, "Configuring DNS."
Chapter 3, "Configuring OSPFv2."
Chapter 8, "Configuring Static Routing."
Chapter 5, "Configuring
1-13