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Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
OL-20002-02
New and Changed Information
Managing Routes Added support dynamic TCAM allocation and 
IPv6 consistency checker.
4.2(1) Chapter 15, “Managing the Unicast 
RIB and FIB”
OSPF Added support limits on redistributed routes and 
multi-area adjacency.
4.2(1) Chapter 6, “Configuring OSPFv2”
Chapter 7, “Configuring OSPFv3”
Route Policy Manager Added support IPv6 and extended communities. 4.2(1) Chapter 16, “Configuring Route 
Policy Manager”
Policy-based routing Added support IPv6. 4.2(1) Chapter 17, “Configuring 
Policy-Based Routing”
First-hop redundancy 
protocols
Added support for stateful switchover. 4.2(1) Chapter 18, “Configuring GLBP”
Chapter 19, “Configuring HSRP”
Chapter 20, “Configuring VRRP”
WCCP Added support WCCPv2 4.2(1) Chapter 5, “Configuring WCCPv2”
4.1
HSRP Added support for vPC threshold values on HSRP 
priority.
4.1(3) Chapter 19, “Configuring HSRP”
BGP Added support dynamic AS numbers for prefix 
peers.
4.1(2) Chapter 10, “Configuring Basic 
BGP”
EIGRP Added support for IPv6. 4.1(2) Chapter 8, “Configuring EIGRP”
IS-IS Added support to set or unset the attached bit. 4.1(2) Chapter 9, “Configuring IS-IS”
Route Policy Manager Added support dynamic AS numbers in route 
maps.
4.1(2) Chapter 16, “Configuring Route 
Policy Manager”
Object Tracking Added support for IPv6. 4.1(2) Chapter 21, “Configuring Object 
Tracking”
4.0
ARP Added support for gratuitous ARP.  4.0(3) Chapter 2, “Configuring IPv4”
EIGRP Added support for EIGRP authentication within a 
VRF.
4.0(3) Chapter 8, “Configuring EIGRP”
EIGRP Added support for EIGRP4-MIB 4.0(3) Chapter 8, “Configuring EIGRP”
EIGRP  Modified the default EIGRP maximum paths to 8. 4.0(2) Chapter 8, “Configuring EIGRP”
Table 1 New and Changed Features for Release 4.x
Feature Description
Changed 
in 
Release Where Documented