What do EVPN single-active and all-active have in common?
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A. B. C. D.D.
https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k-r6-2/lxvpn/configuration/guide/b-l2vpn-cg-asr9000-62x/b-l2vpn-cg-asr9000-E VPN (Ethernet Virtual Private Network) is a technology used by service providers to offer Layer 2 and Layer 3 VPN services. E VPN can be implemented using two different multihoming mechanisms, which are known as E VPN single-active and all-active.
E VPN single-active and all-active are both multihoming mechanisms used for Customer Edge (CE) devices, which are devices that connect to a service provider's network. Multihoming is a method used to provide redundancy and increase availability in the network. With multihoming, a CE device has multiple connections to the service provider's network, so if one connection fails, the other connection can take over and ensure that the CE device remains connected to the network.
E VPN single-active is a mechanism that allows only one of the CE device's connections to be active at a time. In this case, one of the service provider's Provider Edge (PE) routers is designated as the active router, and it forwards all traffic to the CE device. If the active router fails, another PE router takes over as the active router. E VPN single-active is typically used in scenarios where the CE device does not support multihoming or where traffic can be load-balanced across the PE routers.
On the other hand, E VPN all-active is a mechanism that allows all of the CE device's connections to be active simultaneously. In this case, all of the PE routers are designated as active routers and forward traffic to the CE device. E VPN all-active is typically used in scenarios where the CE device supports multihoming and where traffic needs to be load-balanced across the multiple connections.
Therefore, the correct answer to the question is B. Both E VPN single-active and all-active are multihoming mechanisms used for CE devices. Option A is incorrect because E VPN single-active and all-active are not default gateway redundancy options. Option C is incorrect because E VPN single-active and all-active are not used to provide a single connection from a CE device to a service provider. Option D is incorrect because E VPN single-active and all-active are not roles that a designated router can take when MPLS is used with E VPN.