Chapter 16 - BGP | 263 |
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Chapter 16 - BGP
This chapter explains how to modify parameters that affect the way Border Gateway Protocol (BGP) operates. These parameters are global to the device and are not associated with a particular interface.
BGP is an exterior gateway protocol that runs on the Internet backbone and allows Autonomous Systems to exchange routing information with each other. BGP Autonomous Systems are separately administered sites which run other routing protocols such as RIP or OSPF internal to the site. Internet Service Providers are transit AS’s, which means that Internet traffic passes through their Autonomous System. Companies such as Compatible Systems are also separate AS’s, but are only a termination and origination point for Internet traffic.
BGP routers communicate via the TCP protocol. BGP routers that have estab- lished a BGP session are called BGP peers.
BGP General Dialog Box
To access this dialog box, select BGP/BGP General from the device view.
BGP General Dialog Box
Enable BGP
This checkbox turns BGP on globally for this device.
ϖNote: You must also configure BGP peers to enable BGP. If no peers have been configured, BGP will not operate on the router, even if the Enable BGP box has been checked. BGP peers are configured later in this chapter.
Autonomous System
This number specifies the Autonomous System (AS) to which this router belongs. An AS must be assigned a unique
