300-510 · Question #279
Refer to the exhibit. The service provider provides IPv6 connectivity to large enterprise customers with offices spanning several geographic regions SRv6 is running in the service provider core. The…
The correct answer is A. Encapsulate IPv4 traffic from the CEs on their respective PEs through a TE path between PE1. In an SRv6-only core you carry IPv4 VPN services by encapsulating the IPv4 packets at the PEs into an IPv6/SRv6 segment-routing header (essentially a TE path) toward the remote PE, where they are decapsulated and delivered to the CE. This “IPv4 over SRv6” model requires no IPv4…
Question
Refer to the exhibit. The service provider provides IPv6 connectivity to large enterprise customers with offices spanning several geographic regions SRv6 is running in the service provider core. The service provider just signed a contract with a new customer that is still running IPv4. The new customer needs connectivity between its two sites connected via CE1 and CE2 and the internet. Which action must the service provider s network-engineering team take to provide connectivity across the SRv6 data plane?
Options
- AEncapsulate IPv4 traffic from the CEs on their respective PEs through a TE path between PE1
- BTranslate the IPv4 addresses to an IPv6 address on each CE
- CRedistribute the IPv4 routes from CE2 and CE1 on their respective PEs
- DImplement an NTP master and sync the timers on the P and PE routers
How the community answered
(50 responses)- A72% (36)
- B10% (5)
- C14% (7)
- D4% (2)
Explanation
In an SRv6-only core you carry IPv4 VPN services by encapsulating the IPv4 packets at the PEs into an IPv6/SRv6 segment-routing header (essentially a TE path) toward the remote PE, where they are decapsulated and delivered to the CE. This “IPv4 over SRv6” model requires no IPv4 underlay, NAT, or route redistribution. Only the SRv6 encapsulation at the PEs and an SR-TE policy binding the two sites.
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