Router - Revision history

Pbug: /* BGP routing protocol */

2009-08-13T14:39:52Z

BGP routing protocol

← Older revision		Revision as of 07:39, 13 August 2009
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	BGP assembles a routing table that shows routes as chains of AS (autonomous system) numbers. Every network that speaks BGP has an ASN. By announcing its route to its neighbours (also BGP speakers) a router can give more weight in a certain route to itself and thus be able to influence the amount of traffic coming through a certain gateway. Also remote routers that wish to route to a certain AS have the choice to route to any announcement given. If a path is down the routing table updates itself and sends on alternate routes.		BGP assembles a routing table that shows routes as chains of AS (autonomous system) numbers. Every network that speaks BGP has an ASN. By announcing its route to its neighbours (also BGP speakers) a router can give more weight in a certain route to itself and thus be able to influence the amount of traffic coming through a certain gateway. Also remote routers that wish to route to a certain AS have the choice to route to any announcement given. If a path is down the routing table updates itself and sends on alternate routes.

	BGP works when your networks has two or more [[WAN]]s connecting your [[LAN]] to the [[Internet]]. The ASN can be ordered by [http://www.arin.net ARIN] regional IP registry since you also need your own [[IP]] address block to make this work.		BGP works when your networks has two or more [[WAN]]s connecting your [[LAN]] to the [[Internet]]. The ASN can be ordered by [http://www.arin.net ARIN] or [http://www.ripe.net RIPE] regional IP registry since you also need your own [[IP]] address block to make this work.

Pbug: /* BGP routing protocol */

2009-08-13T14:34:42Z

BGP routing protocol

← Older revision		Revision as of 07:34, 13 August 2009
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	Routers that speak the BGP routing protocol are usually routers found at [[ISP]]'s not home routers. BGP stands for Border Gateway Protocol and is defined in RFC 4271.		Routers that speak the BGP routing protocol are usually routers found at [[ISP]]'s not home routers. BGP stands for Border Gateway Protocol and is defined in RFC 4271.
	BGP assembles a routing table that shows routes as chains of AS (autonomous system) numbers. Every network that speaks BGP has an ASN. By announcing its route to its neighbours (also BGP speakers) a router can give more weight in a certain route to itself and thus be able to influence the amount of traffic coming through a certain gateway. Also remote routers that wish to route to a certain AS have the choice to route to any announcement given. If a path is down the routing table updates itself and sends on alternate routes.		BGP assembles a routing table that shows routes as chains of AS (autonomous system) numbers. Every network that speaks BGP has an ASN. By announcing its route to its neighbours (also BGP speakers) a router can give more weight in a certain route to itself and thus be able to influence the amount of traffic coming through a certain gateway. Also remote routers that wish to route to a certain AS have the choice to route to any announcement given. If a path is down the routing table updates itself and sends on alternate routes.

			BGP works when your networks has two or more [[WAN]]s connecting your [[LAN]] to the [[Internet]]. The ASN can be ordered by [http://www.arin.net ARIN] regional IP registry since you also need your own [[IP]] address block to make this work.

Pbug: bgp

2009-08-13T14:30:47Z

bgp

← Older revision		Revision as of 07:30, 13 August 2009
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	An [[IPv6]] router does not recompute the checksum as it doesn't have a field for this in its header.		An [[IPv6]] router does not recompute the checksum as it doesn't have a field for this in its header.


			== BGP routing protocol ==

			Routers that speak the BGP routing protocol are usually routers found at [[ISP]]'s not home routers. BGP stands for Border Gateway Protocol and is defined in RFC 4271.
			BGP assembles a routing table that shows routes as chains of AS (autonomous system) numbers. Every network that speaks BGP has an ASN. By announcing its route to its neighbours (also BGP speakers) a router can give more weight in a certain route to itself and thus be able to influence the amount of traffic coming through a certain gateway. Also remote routers that wish to route to a certain AS have the choice to route to any announcement given. If a path is down the routing table updates itself and sends on alternate routes.

Pbug: link

2009-08-13T11:37:41Z

link

← Older revision		Revision as of 04:37, 13 August 2009
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	A router is a computer that forwards [[OSI]] layer 3 packets from [[network interface]] to [[network interface]]. It has a table (set of rules) called a routing table that makes it determine what interface it should sent a packet out on. Routers decrement the [[IP]] time-to-live on the packet they receive before they pass it on, meaning they have to recompute the checksum on the IP header.		A router is a computer that forwards [[OSI]] layer 3 packets from [[network interface]] to [[network interface]]. It has a table (set of rules) called a routing table that makes it determine what interface it should sent a [[packet]] out on. Routers decrement the [[IP]] time-to-live on the packet they receive before they pass it on, meaning they have to recompute the checksum on the IP header.

	An [[IPv6]] router does not recompute the checksum as it doesn't have a field for this in its header.		An [[IPv6]] router does not recompute the checksum as it doesn't have a field for this in its header.

Pbug: IPv6 link

2009-04-01T15:37:47Z

IPv6 link

← Older revision		Revision as of 08:37, 1 April 2009
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	A router is a computer that forwards [[OSI]] layer 3 packets from [[network interface]] to [[network interface]]. It has a table (set of rules) called a routing table that makes it determine what interface it should sent a packet out on. Routers decrement the [[IP]] time-to-live on the packet they receive before they pass it on, meaning they have to recompute the checksum on the IP header.		A router is a computer that forwards [[OSI]] layer 3 packets from [[network interface]] to [[network interface]]. It has a table (set of rules) called a routing table that makes it determine what interface it should sent a packet out on. Routers decrement the [[IP]] time-to-live on the packet they receive before they pass it on, meaning they have to recompute the checksum on the IP header.

			An [[IPv6]] router does not recompute the checksum as it doesn't have a field for this in its header.

Pbug: interface fixup

2005-12-03T22:47:35Z

interface fixup

← Older revision		Revision as of 15:47, 3 December 2005
Line 1:		Line 1:
	A router is a computer that forwards [[OSI]] layer 3 packets from [[interface]] to [[interface]]. It has a table (set of rules) called a routing table that makes it determine what interface it should sent a packet out on. Routers decrement the [[IP]] time-to-live on the packet they receive before they pass it on, meaning they have to recompute the checksum on the IP header.		A router is a computer that forwards [[OSI]] layer 3 packets from [[network interface]] to [[network interface]]. It has a table (set of rules) called a routing table that makes it determine what interface it should sent a packet out on. Routers decrement the [[IP]] time-to-live on the packet they receive before they pass it on, meaning they have to recompute the checksum on the IP header.

Pbug at 22:46, 3 December 2005

2005-12-03T22:46:04Z

New page

A router is a computer that forwards [[OSI]] layer 3 packets from [[interface]] to [[interface]]. It has a table (set of rules) called a routing table that makes it determine what interface it should sent a packet out on. Routers decrement the [[IP]] time-to-live on the packet they receive before they pass it on, meaning they have to recompute the checksum on the IP header.