The originating node create a route request message and broadcast the message, each intermediate node receiving the RREQ, and search in his route table
to find destination if not founded With each new hop, the intermediate node adds its address to the routing request packet, therefore the packet size is increasing each time it is forwarded, then adding to its route table
a path for the sender node, and finally the RREQ broadcasting again, While RREQ reaches its destination or an intermediate node that has a path to it, the RREP packet is created and sent back to the source.
The prerequisites for updating the route table
are preserve loop-free paths, being the current route, and have fewer or equal intermediate nodes.
In (5), C is the count of route table
entries in all switches (which can be easily recorded by the U-TRI server when route tables
are created and updated).
Node E looks into the route table
. If the path from node E to node F is valid, then node E replies RERREP(route repair reply packet).
This protocol adds a new attribute, sequence number, to each route table
entry at each node.
On its way through the network, the RREQ message initiates creation of temporary route table
entries for the reverse route in the nodes it passes.
According to the selection process of BGP routing, in the first step of the route table
, the best routing has been selected from a number of candidates of routers.
Each node sets up a route table
and a spare route table
after it receives a valid reply packet.
The network features redundant carrier class Cisco 6509 routers with powerful SUP720-3BXL engines and maximum memory to handle the full and ever-expanding global route table
. Like all multi-homed provider networks, HostGee utilizes BGP for fault-tolerant routing over multiple Internet connections.
This implies that BH will be added to the route table
of both I1 and I2 as the first hop to