CCIE R&S V5.1 Written Exam: Describe Basic L2VPN — LAN Services
I will be discussing Describe Basic L2VPN — LAN Services as part of Layer 3 Technologies and Fundamental Routing Concepts CCIE Routing and Switching (R&S) V5.1 exam blueprint topics.
Describe Basic L2VPN — LAN Services :
4.1.h Describe basic L2VPN — LAN services
4.1.h [i] MPLS-VPLS general principals
4.1.h [ii] OTV general principals
Let me summarize some of the key takeaways related to CCIE R&S V5.1 Written Exam: Implement and Troubleshoot Static Routing as relevant to CCIE Routing and Switching (R&S) V5.1 written exam blueprint topics.
- OTV is a “MAC address in IP” technique for supporting Layer 2 VPNs to extend LANs over any transport. The transport can be Layer 2 based, Layer 3 based, IP switched, label switched, or anything else as long as it can carry IP packets
- Since traffic is IP forwarded, OTV is as efficient as the core IP network and will deliver optimal traffic load balancing, multicast traffic replication, and fast failover just like the core would. OTV also supports detection of multi-homing
- OTV authoritative edge device is elected by the OTV to provide loop-free multihoming
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