12/21/2023 0 Comments Auto summarize in ipv6![]() ![]() It is also encapsulation independent, meaning it can be used to forward packets out any interface, regardless of encapsulation type.Īn important consideration of a floating static route is that it is affected by convergence time. However, if the preferred route is lost, the floating static route can take over, and traffic can be sent through this alternate route.Ī floating static route can be used to provide a backup route to multiple interfaces or networks on a router. In this way, the static route “floats” and is not used when the route with the better administrative distance is active. The administrative distance of a static route can be increased to make the route less desirable than that of another static route or a route learned through a dynamic routing protocol. For example, the administrative distances of some common dynamic routing protocols are: R1 currently has four static IPv6 routes to reach networks 2001:DB8:ACAD:1::/64 to 2001:DB8:ACAD:4::/64.įigure 2-66 Why Configure a Floating Static Route?īy default, static routes have an administrative distance of 1, making them preferable to routes learned from dynamic routing protocols. The multiple static routes all use the same exit interface or next-hop IPv6 address.The destination networks are contiguous and can be summarized into a single network address.Multiple static IPv6 routes can be summarized into a single static IPv6 route if: It just requires a few extra steps due to the abbreviated IPv6 addresses and hex conversion. Summarize IPv6 Network Addresses (2.4.2.1)Īside from the fact that IPv6 addresses are 128 bits long and written in hexadecimal, summarizing IPv6 addresses is actually similar to the summarization of IPv4 addresses. The calculation and configuration of an IPv6 summary static route is similar to the configuration of an IPv4 static summary route. Similar to IPv4, a single IPv6 static summary route can be used to replace multiple IPv6 static routes with a common prefix length. After calculating summary routes for each LAN, you must summarize a route which includes all networks in the topology in order for the ISP to reach each LAN. Route summarization, also known as route aggregation, is the process of advertising a contiguous set of addresses as a single address. In this activity, you will calculate and configure summary routes. Packet Tracer Activity 2.4.1.6: Configuring IPv4 Route Summarization – Scenario 2 In Figure 2-52, R1 requires a summary static route to reach networks in the range of 172.20.0.0/16 to 172.23.0.0/16. It also helps reduce bandwidth utilization for routing updates and results in faster routing table lookups. This type of summarization helps reduce the number of entries in routing updates and lowers the number of entries in local routing tables. CIDR is a form of route summarization and is synonymous with the term supernetting.ĬIDR ignores the limitation of classful boundaries, and allows summarization with masks that are smaller than that of the default classful mask. Route summarization, also known as route aggregation, is the process of advertising a contiguous set of addresses as a single address with a less-specific, shorter subnet mask. ![]() The configuration of a summary static route is similar to the configuration of other IPv4 static routes. Configure IPv4 Summary Routes (2.4.1)Ī single IPv4 static summary route can be used to replace multiple static routes when those routes can be summarized with a common prefix length. Floating static routes can be used as a backup route for another static route or a dynamic routing protocol. Using summary static routes can also make management of a large number of static routes easier and less prone to errors. ![]() Summary static routes can be used to help minimize the number of static routes in the routing table. Configure Summary and Floating Static Routes (2.4) ![]()
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