Cisco Networking

BGP Load Sharing

What is load sharing and why to use it?Load balancing with BGP is not possible in a multihomed environment with two ISPs. BGP selects only the single best path to a destination among the BGP paths that are learned from different ASs, which makes load balancing impossible. However, load sharing Read more…

By Joe Conklin, ago
Cisco Networking

BGP Conditional Advertisement

What is conditional advertisement and why to use it?Normally, routes are propagated regardless of the existence of a different path. The BGP conditional advertisement feature uses the non-exist-map and the advertise-map keywords of the neighbor advertise-map command in order to track routes by the route prefix. If a route prefix Read more…

By Joe Conklin, ago
Cisco Networking

BGP Route Filtering

What is route filtering and why to use it?In the context of network routing, route filtering is the process by which certain routes are not considered for inclusion in the local route database, or not advertised to one's neighbours. Route filtering is particularly important for use on large networks or Read more…

By Joe Conklin, ago
Cisco Networking

EIGRP Load Balancing

What is EIGRP load balancing and why to use it?Load balancing is a standard functionality of the Cisco IOS router software, and is available across all router platforms. It is inherent to the forwarding process in the router and is automatically activated if the routing table has multiple paths to Read more…

By Joe Conklin, ago
Cisco Networking

EIGRP Route Summarization

What is route summarization and why to use it?In large internetworks, hundreds, or even thousands, of network addresses can exist. It is often problematic for routers to maintain this volume of routes in their routing tables. Route summarization (also called route aggregation or supernetting) can reduce the number of routes Read more…

By Joe Conklin, ago
Cisco Networking

BGP Route Summarization

What is route summarization and why to use it?In large internetworks, hundreds, or even thousands, of network addresses can exist. It is often problematic for routers to maintain this volume of routes in their routing tables. Route summarization (also called route aggregation or supernetting) can reduce the number of routes Read more…

By Joe Conklin, ago
Cisco Networking

OSPF Route Filtering

What is route filtering and why to use it?In the context of network routing, route filtering is the process by which certain routes are not considered for inclusion in the local route database, or not advertised to one's neighbours. Route filtering is particularly important for use on large networks or Read more…

By Joe Conklin, ago
Cisco Networking

EIGRP Route Filtering

What is route filtering and why to use it?In the context of network routing, route filtering is the process by which certain routes are not considered for inclusion in the local route database, or not advertised to one's neighbours. Route filtering is particularly important for use on large networks or Read more…

By Joe Conklin, ago