Allied Telesis AT-WR4500 - Manual (Page 93)

AT-WR4500 Series - IEEE 802.11abgh Outdoor Wireless Routers 93
RouterOS v3 Configuration and User Guide
Related Topics
IP Addresses and ARP
Routes, Equal Cost Multipath Routing, Policy Routing
Description
Routing Information Protocol (RIP) is one protocol in a series of routing protocols based on Bellman-
Ford (or distance vector) algorithm. This Interior Gateway Protocol (IGP) lets routers exchange routing
information across a single autonomous system in the way of periodic RIP updates. Routers transmit their
own RIP updates to neighboring networks and listen to the RIP updates from the routers on those
neighboring networks to ensure their routing table reflects the current state of the network and all the
best paths are available. Best path considered to be a path with the fewest hop count (id est that include
fewer routers).
The routes learned by RIP protocol are installed in the route list (/ip route print) with the distance of
120.
Additional Resources
•
http://www.ietf.org/rfc/rfc1058.txt (RIP v1)
•
http://www.ietf.org/rfc/rfc2453.txt (RIP v2)
• http://en.wikipedia.org/wiki/Routing_Information_Protocol
5.2.2
General Setup
Property Description
distribute-default (always | never | if-installed; default: never) - specifies whether to redistribute the
default route 0.0.0.0/0 or not
redistribute-static (yes | no; default: no) - specifies whether to redistribute static routes to neighbor
routers or not
redistribute-connected (yes | no; default: no) - specifies whether to redistribute connected routes to
neighbor routers or not
redistribute-ospf (yes | no; default: no) - specifies whether to redistribute routes learned via OSPF
protocol to neighbor routers or not
redistribute-bgp (yes | no; default: no) - specifies whether to redistribute routes learned via bgp
protocol to neighbor routers or not
metric-default (integer; default: 1) - specifies metric (the number of hops) for the default route
metric-static (integer; default: 1) - specifies metric (the number of hops) for the static routes
metric-connected (integer; default: 1) - specifies metric (the number of hops) for the connected routes
metric-ospf (integer; default: 1) - specifies metric (the number of hops) for the routes learned via OSPF
protocol
metric-bgp (integer; default: 1) - specifies metric (the number of hops) for the routes learned via BGP
protocol
update-timer (time; default: 30s) - specifies frequency of RIP updates
timeout-timer (time; default: 3m) - specifies time interval after which the route is considered invalid
garbage-timer (time; default: 2m) - specifies time interval after which the invalid route will be dropped
from neighbor router table
The maximum metric of RIP route is 15. Metric higher than 15 is considered 'infinity' and routes with
such metric are considered unreachable. Thus RIP cannot be used on networks with more than 15 hops
between any two routers, and using redistribute metrics larger that 1 further reduces this maximum
hop count.