What is BGP path selection?
BGP Best Path Selection Algorithm is used to choose and install the best routes into the router’s routing table. The Weight is not passed to the following router updates. In case there are multiple paths to a certain IP address, BGP always selects the path with the highest weight.
What are BGP states?
In order to make decisions in its operations with peers, a BGP peer uses a simple finite state machine (FSM) that consists of six states: Idle; Connect; Active; OpenSent; OpenConfirm; and Established.
What is BGP confederation?
A BGP confederation is an alternative method to route reflectors, used to reduce the number of BGP peerings within a single AS. Furthermore it is a single AS that has been subdivided into a number of internal sub-AS’s, yet still, advertise as a single AS to external peers .
What is the purpose of a BGP confederation?
Similar to route reflectors , BGP confederations reduce the number of peer sessions and TCP sessions to maintain connections between IBGP routing devices. BGP confederation is one method used to solve the scaling problems created by the IBGP full mesh requirement.
What protocol will the routers use to determine the most optimal path to forward the traffic?
Border Gateway Protocol is a protocol the routers use to determine the most optimal path to forward the traffic. Explanation: BGP is a path vector protocol which chooses the most optimal path. The protocol decides core routing decisions based on path, configuration and network.
How to optimize the return path on a router?
Coaxial Network (RF Distribution) • Unity Gain • Reverse Sweep • Input Levels to Actives Fiber Network (Laser/Node/Receiver) • Return Laser Setup • NPR Headend Distribution Network • Optimal Return Receiver Setup • Input into CMTS port The X Level Network Troubleshooting Presentation_ID © 2010 Cisco and/or its affiliates. All rights reserved.
Which is the best version of return path optimization?
Return Path Optimization Version 14 Presentation_ID© 2009 Cisco Systems, Inc. All rights reserved.© 2010 Cisco and/or its affiliates. All rights reserved.Cisco Confidential Cisco Confidential1 Return Path Optimization Frank Eichenlaub Systems Engineer Presentation_ID © 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 2
How to optimize return path in HFC CATV?
• Optimal Return Receiver Setup • Input into CMTS port The X Level Network Troubleshooting Presentation_ID © 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 3 Typical Two-Way HFC CATV System? Stable Network? Reference Signals? •Forward •Return RF Level Controls? •Forward •Return Does Forward need return?
Is there a return path for DOCSIS ALC?
DOCSIS ALC Presentation_ID © 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 5 Divide and Conquer the Return Path! Presentation_ID © 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 6 RF Network • Output of Node RX to TV, STB, or Modem Forward Path