Overview: RIPv2 is an enhancement over RIPv1 in that RIPv2 overcomes three main limitations. RIPv2 accommodates discontiguous network designs, supernetting and VLSM. Study Notes: RIPv2 is an enhancement over RIPv1 RIPv2 is encapsulated in a UDP segment on port 520 RIPv2 can carry up to 25 ruotes RIPv2 includes a subnet mask field allowing […]
Overview: EIGRP for IPv6 functions the same as EIGRP for IPv4 only it uses IPv6 addresses and some of the commands are different. Study Notes: Configuration commands to use with EIGRP for IPv6 config t ipv6 unicast-routing ipv6 router eigrp eigrp router-id 1.1.1.1 no shutdown Ctrl+Z config t interface f0/0 ipv6 eigrp 1 Ctrl+Z […]
Overview: Enhanced Interior Gateway Routing Protocol (EIGRP) is a Cisco proprietary advanced distance vector dynamic routing protocol. Study Notes: EIGRP uses the Diffusing Update Algorithm (DUAL) Fast convergence Easy on processor Incremental updates EIGRP is an Advanced Distance vector protocol Combines the best of Distance Vector with Link State protocols, but is considered a […]
Overview: A passive interface prevents sending OSPF messages out interfaces that are not connected to another OSPF router. Study Notes: Passive interfaces help to more efficiently use bandwidth Passive interfaces help to more efficiently use router resources Passive interfaces lessen the security risk Passive interfaces can be set per interface that is enabled for […]
Overview: OSPFv3 has the same functionality as OSPFv2, but uses IPv6 addresses to communicate with OSPFv3 peers. Study Notes: OSPFv3 uses the same SPF algorithm as OSPFv2 OSPFv3 has a separate process than OSPFv2 OSPFv3 maintains separate neighbor tables, topology tables and routing tables from OSPFv2 Similarities Link State SPF algorithm Metric is cost […]
Overview: Open Shortest Path First version 2 (OSPFv2), is a non-proprietary link-state routing protocol that is typically used within an autonomous system (otherwise known as an interior gateway protocol). The v2 simply means you are using IPv4 addresses. Study Notes: OSPF is a Link-state routing protocol Dijkstra’s Shortest Path First algorithm is used to […]
Overview: A floating static route is a static route with an administrative distance higher than that of the routing protocol in use. In this way, the floating static route will only appear in the routing table if the existing static or dynamic route is lost. Study Notes: Floating static routes are static routes with the […]
Overview: A host route is used to route traffic to a specific host. The subnet mask in the route will always be all 1’s. That means the subnet mask for a host route will be /32 for IPv4 and /128 for IPv6. Study Notes: A host route is configured to route packets to a […]
Overview: A network route is used to route traffic to a specific network. Study Notes: A network route is configured to route packets to a specific network You may add many different network routes to the routing table Without a network route, packets will get routed via the default route if one exists Network […]
Overview: A default route is used to route traffic to any network that is not in your routing table. Without a default route defined, any traffic destined to a network that is not in the routing table will be dropped by the router. Study Notes: A default route is configured to route packets to […]