CCIE R&S V5.1 Written Exam: Describe Basic Layer 2 VPN — Wireline
I will be discussing Describe Basic Layer 2 VPN — Wireline as part of Layer 3 Technologies and Fundamental Routing Concepts CCIE Routing and Switching (R&S) V5.1 exam blueprint topics.
Describe Basic Layer 2 VPN — Wireline :
4.1.g Describe basic layer 2 VPN —wireline
4.1.g [i] L2TPv3 general principals
4.1.g [ii] ATOM 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.
- L2TPv3 carries frames inside IP packets
- PW FEC contains PW ID, Type and Control Word (CW)
- MPLS EXP and Traffic class bits describe the MPLS QoS behaviors
- Depending on the Don’t Fragment (DF) bit, L2TP routers will either fragment or drop a packet that exceeds the path MTU
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