routeprotocol
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Administrative Distance
When each routing protocol on a router receives information, it will attempt to install any routing paths into the routing table. If the route already exists in the routing table, the administrative distance is compared and the routing protocol with the lower administrative distance is inserted into the routing protocol. Routing Protocol Default Administrative Distance…
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Prefix Selection
When a packet needs to be forwarded, the chosen route is dependant on that routes prefix length. A /30 (255.255.255.252) would be preferred over a /24 (255.255.255.0) due to a more specific match. This forward decision is part of the Forwarding Information Base (FIB) rather than Routing Information Base (RIB).
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Path Selection
When a packet arrives on the router, the router identifies the destination path that packet should traverse by evaluating the prefix length as programmed in the Forwarding Information Base (FIB). The Forwarding Information Base is programmed the routing table, also known in this context as the Routing Information Base (RIB). The Routing Information Base contains…
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Path Vector Algorithms
Path Vector Algorithms, such as BGP, are similar to a distance vector protocol. The major difference between the two is that instead of looking at just distance to determine a loop free path to the destination, various other attributes are considered instead, in the case of BGP: Autonomous system path (AS_Path) Multi exit discriminator (MED)…
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Link State Algorithms
A link state algorithm advertises the link state and link metric for each of the connected links and directly connected routers to every router in the network. OSPF and IS-IS are two link state routing protocols commonly used in enterprise and service provider networks. Advertisements sent by OSPF are known as link-state advertisements, or LSAs.…
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Enhanced Distance Vector Algorithms
Diffusing Update Algorithm, or DUAL, is an enhanced distance vector algorithm. EIGRP uses it to calculate the shortest path to a destination within a network. Whilst EIGRP acts in a similar way to advertising its networks as other distance vector protocols do, there are some enhancements: Rapid convergence time when the network topology changes Updates…
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Distance Vector Algorithms
Routing protocols such as RIP advertise routes as vectors, where distance is the cost measured in network hops. When the router receives routing information from a neighbour, it will store it in a local routing database when received. Distance vector algorithms such as the Bellman-Ford and Ford-Fulkerson algorithms are used to determined which paths are…
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Overview of Routing Protocols
The routers main function is to move an IP packet from one network to another. The router learns of these networks through a direct connection to them, being statically configured to know of them but a network administrator, and learned automatically through dynamic routing protocols. There a number of common routing protocols used across LANs…
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Free Developer Licence for Citrix ADC
This is different from the Freemium licence; so please make sure it is suitable both technically and licence agreement-wise for your use case. https://citrix.com/downloads/citrix-adc/virtual-appliances/netscaler-vpx-developer-edition.htm Source: https://mybrokencomputer.net/t/citrix-adc-netscaler-developer-license/42/2 Express Licence Overview of Features: Developer Licence Overview of Features:
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Changing a Citrix Netscaler / ADC IP via Console
By default the Citrix Netscaler IP listens on 192.168.100.1. One method of changing the management IP is through the console session, this is especially easy if it is a remote appliance. Enter config ns on the command line Now press 1 to select menu option 1, enter the new IP address. Note: If it skips…