What is the difference between 6PE and 6VPE?
The difference between 6PE and 6VPE is whether the IPv6 routes are in the global routing table or in VRFs. 6PE serves the same role as plain IPv4 over MPLS, and 6VPE is the equivalent of an MPLS VPN.
What is 6PE networking?
6PE is a technique that provides global IPv6 reachability over IPv4 MPLS. It allows one shared routing table for all other devices. 6PE allows IPv6 domains to communicate with one another over the IPv4 without an explicit tunnel setup, requiring only one IPv4 address per IPv6 domain.
What is 6VPE?
6VPE is a mechanism to use the IPv4 backbone to provide VPN IPv6 services. It takes advantage of operational IPv4 MPLS backbones, eliminating the need for dual-stacking within the MPLS core. This translates to savings in operational costs and addresses the security limitations of the 6PE approach.
Does MPLS work with IPv6?
One last method to carry IPv6 over an MPLS backbone is to use the MPLS VPN solution. In the case of MPLS VPN, IPv4 is carried inside VPNs over the MPLS backbone. To carry the IPv6 traffic over IPv4, the CE routers need tunnels between them. This means that the CE routers need to be dual-stack routers.
What is VPNv6?
A VPNv6 address comprises an RD and an IPv6 prefix. In IPv6 MPLS L3VPNs, PEs exchange BGP VPNv6 routes. For a PE to exchange BGP VPNv6 routes with a BGP peer, you must enable that peer by executing the peer enable command in BGP VPNv6 address family view.
What is dual stack mode?
Dual stack means that devices are able to run IPv4 and IPv6 in parallel. It allows hosts to simultaneously reach IPv4 and IPv6 content, so it offers a very flexible coexistence strategy.
Why We Use MP BGP in MPLS?
Multiprotocol BGP is also widely deployed in case of MPLS L3 VPN, to exchange VPN labels learned for the routes from the customer sites over the MPLS network, in order to distinguish between different customer sites when the traffic from the other customer sites comes to the provider edge router (PE router) for routing …
What is AFI and SAFI in BGP?
AFI means Address Family Indicator and SAFI is the Subsequent Address Family Indicator. They are used in the Multiprotocol Extensions to BGP and are exchanged during neighbor capability exchange during the process for loading the peers.
Is IPv6 faster than IPv4?
Web and cloud services provider, Akamai, measured the speed of IPv6 vs. IPv4. They found, “Sites load 5% faster in median and 15% faster for the 95% percentile on IPv6 compared to IPv4.” That means for some people who are pursuing high speed, IPv6 is indeed a better choice.
Can you mix IPv4 and IPv6?
Actually, IPv4 and IPv6 aren’t compatible with each other, which means devices cannot communicate directly. Today, IPv4 is still dominant in IP network, while IPv6 network has only a small range of deployment and commercial use.
What is difference between MP-BGP and BGP?
Multiprotocol BGP (MP-BGP) is an extension to BGP that enables BGP to carry routing information for multiple network layers and address families. MP-BGP can carry the unicast routes used for multicast routing separately from the routes used for unicast IP forwarding.
Is BGP unicast or multicast?
MP-BGP supports unicast and multicast, and constructs different network topologies for each. MP-BGP can maintain unicast and multicast routes based on routing policies. The unicast routing policies and configurations supported by BGP-4 can mostly be applied to multicast.
Why We Use MP-BGP in MPLS?
What is difference between BGP and MP-BGP?
Why is IPv6 not popular?
So if the protocol has been ready to roll for more than 20 years, why isn’t it everywhere yet? Perhaps the primary reason IPv6 has been slow to take hold is because of network address translation (NAT), which has the ability to take a collection of private IP addresses and make them public.
Why is IPv6 preferred over IPv4?
IPv6 (Internet Protocol version 6) is the next version after IPv4. Instead of the 32 bits used by IPv4 for addressing, IPv6 uses 128 bits for the same purpose – which theoretically makes it possible to assign 2 128 addresses – hence, it offers long term solutions to most of the problems that emerged while using IPv4.
Why do we switch IPv4 to IPv6?
The rationale for transition is either the lack of IPv4 address space or the required use of new features in IPv6, or both. The IPv6 specification requires 100 per cent compatibility for the existing protocols. Compatibility is also required for existing applications during the transition.
Does BGP require MPLS?
However, MPLS can also work without BGP, and BGP does not require in any way that MPLS be used (in fact, BGP was created long before MPLS).
Why BGP is used in MPLS?
BGP carries routing information for the network and MPLS labels, whereas MPLS transports the data traffic.
Who actually uses IPv6?
Verizon Wireless similarly reports that about 90% of its traffic uses IPv6. T-Mobile USA is among the providers in the process of turning IPv4 off. Other major cellular IPv6 providers include AT Wireless, Sprint, Telus, Tele2, EE, KDDI, Softbank, OTE, Rogers and many others.
Is IPv6 a failure?
IPv6 has been around for two decades and accounts for less than 1 percent of Internet traffic, making it’s adoption one of the biggest failures in IT.
What is the main benefit of IPv6?
More Efficient Routing – IPv6 reduces the size of routing tables and makes routing more efficient and hierarchical. In IPv6 networks, fragmentation is handled by the source device, rather than a router, using a protocol for discovery of the path’s maximum transmission unit.
What are the four benefits of IPv6?
Key benefits to IPv6 include:
- No more NAT (Network Address Translation)
- Auto-configuration.
- No more private address collisions.
- Better multicast routing.
- Simpler header format.
- Simplified, more efficient routing.
- True quality of service (QoS), also called “flow labeling”
- Built-in authentication and privacy support.
Why do we use BGP instead of OSPF?
Scale: BGP is more flexible and scalable than OSPF and it is also used on a larger network. Preferred path: OSPF is used to determine the fastest route while BGP puts emphasis on determining the best path. Protocol: In OSPF, internet protocol is used. While in BGP, transmission control protocol is used.