l3 and multicasting ppt by networkers home
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L3 Routing & Multicasting
Typical Enterprise Network Design
Layer 3 Feature by place in Network
Layer 3 Access Consideration• Advantages Lower L2 table utilization Smaller L2 domain eliminate STP
• Drawbacks More L3 configuration points VM mobility constrained to a smaller L2
domain
• Use OSPF stub area, EIGRP stub or static default routes
• Fabric Extender technology enables larger L2 domains without adding STP hops
Layer 3 Aggregation Considerations
Nexus 7000 Layer 3 and MPLS Support
Comparison of I/O Module
Licence• Enterprise Services License - all routing protocols
except RIP • MPLS License – MPLS features • XL License – higher FIB table sizes (optional) • Base - all other Layer 3 features (SVIs, Layer 3 ports,
FHRP, IGMP etc)
Nexus 5500 L3 Support
5500 L3 Licence
Nexus 2000 FEX L3 / MPLS
IP Unicast Routing and Forwarding
NX-OS and Nexus 7000 Unicast Routing Architecture
NX-OS Unicast Routing ProtocolsPlatform Support
NX-OS Unicast Routing ProtocolsConfiguration Highlights
Management and Troubleshooting Highlights
Router-id Selection Process
OSPF in NX-OS
OSPF
EIGRP in NX-OS
EIGRP
BGP
• Full MP-BGP support • BGP version 4 (RFC 4271) • Multi-Protocol Extensions (RFC 2858) • Integrated implementation for IPv4 and IPv6 • Route Reflector support for all Afs • BGP Dynamic Capability (draft-ietf-idr-dynamic-
cap-14) • 4 byte ASN support and interoperability (RFC
4893)
BGP