Netgear XCM8806 Chassis User Manual - Page 596

NETGEAR 8800 User Manual 1 2 3 4 A B 5 6 7 8 192.207.35.1 192.207.36.1 192.207.35.0 Finance 192.207.36.0 Personnel 1 2 3 4 192.207.35.11 192.207.35.13 192.207.36.14 192.207.36.12 EX_070 Figure 62. Routing Between VLANs Populating the Routing Tables The switch maintains a set of IP routing tables for both network routes and host routes. Some routes are determined dynamically from routing protocols, and some routes are manually entered. When multiple routes are available to a destination, configurable options such as route priorities, route sharing, and compressed routes are considered when creating and updating the routing tables. This section presents the following topics: • Dynamic Routes on page 596 • Static Routes on page 597 • Multiple Routes on page 597 • Relative Route Priorities on page 597 • IP Route Sharing and ECMP on page 598 • Compressed Routes on page 599 Dynamic Routes Dynamic routes are typically learned by enabling the RIP, OSPF, or BGP protocols, and are also learned from Internet Control Message Protocol (ICMP) redirects exchanged with other routers. These routes are called dynamic routes because they are not a permanent part of the configuration. The routes are learned when the router starts up and are dynamically updated as the network changes. Older dynamic routes are aged out of the tables when an update for the network is not received for a period of time, as determined by the routing protocol. 596 | Chapter 20. IPv4 Unicast Routing