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Topic: Border Gateway Protocol


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DDP

In the News (Fri 27 Nov 09)

  
  Border Gateway Protocol - Wikipedia, the free encyclopedia
RFC 4271, A Border Gateway Protocol 4 (BGP-4) (obsoletes: RFC 1771)
RFC 1771, Obsolete - A Border Gateway Protocol 4 (BGP-4)
RFC 1654, Obsolete - A Border Gateway Protocol 4 (BGP-4)
en.wikipedia.org /wiki/Border_Gateway_Protocol   (1452 words)

  
 RFC 1771 (rfc1771) - A Border Gateway Protocol 4 (BGP-4)
BGP Identifier: This 4-octet unsigned integer indicates the BGP Identifier of the sender.
Note that quite often BGP, as specified in RFC 1105, is referred to as BGP-1, BGP, as specified in RFC 1163, is referred to as BGP-2, BGP, as specified in RFC1267 is referred to as BGP-3, and BGP, as specified in this document is referred to as BGP-4.
When peering with a BGP implementation that does not compress multiple address prefixes into one message, it may be necessary to take steps to reduce the overhead from the flood of data received when a peer is acquired or a significant network topology change occurs.
www.faqs.org /rfcs/rfc1771.html   (14132 words)

  
 RFC 1105 (rfc1105) - Border Gateway Protocol (BGP)
One way is to use the BGP protocol to exchange routing information between the BGP gateways within a single AS.
Note that this requirement does not imply that all BGP gateways within a single AS must have direct links to each other; other methods may be used to ensure consistent routing information.
The phrase "the BGP connection is closed" means that the transport protocol connection has been closed and that all resources for that BGP connection have been deallocated.
www.faqs.org /rfcs/rfc1105.html   (3794 words)

  
 Border Gateway Protocol (BGP)
BGP is a very robust and scalable routing protocol, as evidenced by the fact that BGP is the routing protocol employed on the Internet.
BGP neighbors exchange full routing information when the TCP connection between neighbors is first established.
Routes learned via BGP have associated properties that are used to determine the best route to a destination when multiple paths exist to a particular destination.
www.cisco.com /univercd/cc/td/doc/cisintwk/ito_doc/bgp.htm   (1802 words)

  
 Resource Reservation Aggregation
To reduce the protocol message traffic, routers may reserve domain bandwidth beyond the current load, so that sources can join or leave the tree or change their reservation without having to send messages all the way to the tree root for every such change.
BGP establishes ``virtual edges'' by using reachability as a definition for the existence of a link in the graph.
"BGP 101: An Introduction to the Border Gateway Protocol", Paul Ferguson, NANOG 12, February 8-10, 1998.
www.cs.columbia.edu /~pingpan/projects/bgrp.html   (1076 words)

  
 BGP, Border Gateway Protocol
The COMMUNITIES path attribute may be used with BGP version 2 and all subsequent versions of BGP unless specifically noted otherwise.
All routes received carrying a communities attribute containing this value MUST NOT be advertised outside a BGP confederation boundary (a stand-alone autonomous system that is not part of a confederation should be considered a confederation itself).
This is an advisory qualification to readvertisement of a route prefix, permitting an AS not to readvertise the route prefix to all external bilateral peer neighbour AS's.
www.networksorcery.com /enp/protocol/bgp.htm   (709 words)

  
 TCP / IP Protocols - AH | ESP | TLS | BGP-4 | EGP | EIGRP | GRE | HSRP | IGRP
This protocol is intended to control multiple data delivery sessions, provide a means for choosing delivery channels such as UDP, multicast UDP and TCP, and provide a means for choosing delivery mechanisms bases upon RTP.
The protocol is composed of two layers: the TLS Record Protocol and the TLS Handshake Protocol.
One such encapsulated protocol, the TLS Handshake Protocol, allows the server and client to authenticate each other and to negotiate an encryption algorithm and cryptographic keys before the application protocol transmits or receives its first byte of data.
www.protocols.com /pbook/tcpip5.htm   (2306 words)

  
 Define BGP - a Whatis.com definition - see also: Border Gateway Protocol
BGP (Border Gateway Protocol) is a protocol for exchanging routing information between gateway hosts (each with its own router) in a network of autonomous systems.
BGP is often the protocol used between gateway hosts on the Internet.
BGP is a more recent protocol than the Exterior Gateway Protocol (EGP).
whatis.techtarget.com /definition/0,,sid9_gci213813,00.html   (317 words)

  
 Border Gateway Protocol
BGP is a routing protocol that is used by ISPs on the internet to communicate routing information, and if you want to connect to more than one ISP, chances are you'll need to run it.
You can see the details of this networks bgp attributes in the show ip bgp output, the details of the routing information in the show ip route output and an overview of the BGP information in the second show ip bgp.
In the BGP section we can see our two paths, one for each ISP, and we can see that the sprint path (via AS 1239) gets chosen because it has a shorter AS path (this is easier to see on the brief show ip bgp output on the right side).
www.cyberflunk.com /~nikm/cisco/bgp.html   (886 words)

  
 RFC 1771 (rfc1771)
For example, BGP does not enable one AS to send traffic to a neighboring AS intending that the traffic take a different route from that taken by traffic originating in the Rekhter & Li [Page 2] RFC 1771 BGP-4 March 1995 neighboring AS.
If the transport protocol connection succeeds, the local system clears the ConnectRetry timer, completes initialization, sends an OPEN message to its peer, sets its Hold Timer to a large Rekhter & Li [Page 30] RFC 1771 BGP-4 March 1995 value, and changes its state to OpenSent.
Whenever BGP changes its state from Established to Idle, it closes the BGP (and transport-level) connection, releases all resources associated with that connection, and deletes all Rekhter & Li [Page 33] RFC 1771 BGP-4 March 1995 routes derived from that connection.
www.cse.ohio-state.edu /cgi-bin/rfc/rfc1771.html   (14431 words)

  
 What is BGP? - A Word Definition From the Webopedia Computer Dictionary   (Site not responding. Last check: 2007-11-02)
Short for Border Gateway Protocol, an exterior gateway routing protocol that enables groups of routers (called autonomous systems) to share routing information so that efficient, loop-free routes can be established.
BGP is commonly used within and between Internet Service Providers (ISPs).
Links to BGP standards documents (RFCs) as well as white papers and configuration information.
www.webopedia.com /quick_ref/BGP.html   (116 words)

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