Setup guide

Example
Troubleshooting
Description
General Information
Summary
The Border Gateway Protocol (BGP) allows setting up an interdomain dynamic routing system that
automatically generates the routing table for routing between autonomous systems (AS).
Wandy RouterOS supports BGP Version 4, as defined in RFC1771.
The Wandy RouterOS implementation of the BGP has filtering (using prefix lists) feature
Specifications
Packages required: routing
License required: level3
routing bgp
Standards and Technologies: RFC1771
Hardware usage: requires additional RAM for storing routing information (128MB recommended)
Related Documents
• Package Management
• IP Addresses and ARP
• Routes, Equal Cost Multipath Routing, Policy Routing
Description
The Border Gateway Protocol (BGP) is an Exterior Gateway Protocol (EGP). It allows setting up an
interdomain routing system that automatically guarantees the loop-free exchange of routing
information between autonomous systems (AS). It is widely used in companies assigned with a
definite IP address ranges and connected to a nubmer of ISPs simultaneously so that if one of the
links is down, the IP address ranges are still reachable via an another ISP.
The Wandy RouterOS implementation of the BGP supports filtering with prefix lists, that is used
for filtering received and sent routing information.
The routes learned by BGP protocol are installed in the route list with the distance of 200 for iBGP
(Internal BGP) routes and of 20 for eBGP (External BGP) routes.
Additional Documents
• http://www.ietf.org/rfc/rfc1771.txt
• http://www.cisco.com/univercd/cc/td/doc/cisintwk/ics/icsbgp4.htm
• http://www.cisco.com/univercd/cc/td/doc/cisintwk/idg4/nd2003.htm
BGP Setup