Specifications

CHAPTER
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12-1
Cisco Nexus 3000 Series NX-OS Unicast Routing Configuration Guide, Release 5.0(3)U2(2)
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Managing the Unicast RIB and FIB
This chapter describes how to manage routes in the unicast Routing Information Base (RIB) and the
Forwarding Information Base (FIB) on the Cisco NX-OS switch.
This chapter includes the following sections:
• Information About the Unicast RIB and FIB, page 12-1
• Licensing Requirements for the Unicast RIB and FIB, page 12-3
• Managing the Unicast RIB and FIB, page 12-3
• Verifying the Unicast RIB and FIB Configuration, page 12-10
• Additional References, page 12-10
• Feature History for Unicast RIB and FIB, page 12-10
Information About the Unicast RIB and FIB
The unicast RIB (IPv4 RIB) and FIB are part of the Cisco NX-OS forwarding architecture, as shown in
Figure 12-1.
Figure 12-1 Cisco NX-OS Forwarding Architecture
URIB
Unicast FIB Distribution Module (uFDM)
Unicast Forwarding Information Base (UFIB)
Adjacency Manager (AM)
EIGRP BGP OSPF ARP
Switch components
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