Network Defence – Access Control List ( ACL)
In the gated residential area where your grandparents reside, certain regulations govern the entry and exit procedures. To gain access to the community, the security personnel will only raise the gate once your presence has been verified against an authorized visitor list. Similarly, when it comes to network traffic traversing an interface set up with an access control list (ACL), there are provisions for permitting or denying traffic. How can you go about configuring these ACLs? Furthermore, what steps should you take if they are not functioning as intended or need adjustments for other reasons? Begin exploring this module to acquire a deeper understanding. Introduction to Access Control Lists Routers play a critical role in making routing decisions based on information contained in the packet header. When traffic enters a […]
Technology
How to Configure Stateful DHCPv6 Server
We can configure the stateful DHCPv6 server is similar to configuring a stateless server. The difference between stateless and stateful is that a stateful server also includes IPv6 addressing information similar to a DHCPv4 server and obtains the state of the DHCP. Similar to stateless DHCPv6 we need to enable unicast routing. The command ipv6 […]
Stateless DHCPv6 Server Configuration
Before Configuring stateless DHCPv6 server on the Cisco router, it is important to enabling IPv6 unicast routing. The unicast routing is not necessary for stateless DHCPv6 server but it is required for RA messages due to using of ICMPv6. We can enable the IPv6 unicast routing using “ipv6 unicast-routing” command in global configuration mode. Other […]
DHCPv6 Operation
Bothe of the stateless and stateful DHCPv6 operation are started with an ICMPv6 RA message from the router. The RA message may have been periodic or solicited by the device using an RS message. The devices start client and server communication when stateless or stateful DHCPv6 is indicated in the RA message. The DHCPv6 operation […]
SLAAC and DHCPv6
Remember that we already discussed the introduction of the SLAAC and DHCPv6 in Router Advertisement (RA) messages. Now well discuss both SLAAC and DHCPv6 briefly. Recall that the router sends Router advertisement (RA) message. The setting of Router Advertisement (RA) message decides whether a client to obtain its IPv6 address information automatically using SLAAC, DHCPv6 […]
Cisco CCNP RS – Learning Summary of EIGRP
EIGRP is the abbreviation of Enhanced Internal Gateway Routing Protocol. It is a unique protocol of Cisco and can only run on Cisco devices. Therefore, unlike OSPF and RIP, EIGRP has special RFC documents. Its predecessor is IGRP. Of course, it is similar to IGRP only in the calculation of metric value, and it is very different in other aspects. It combines the distance vector and link state protocols. It has the characteristics of distance vector and link state protocols. It supports VLAN and discontinuous sub-nets. The link topology calculated according to its core algorithm is 100% acyclic. The most important feature is fast convergence and does not occupy bandwidth. When the physical topology does not change, it will only send some simple keep-alive messages to maintain it. It supports […]
What is the CNC? Why is it so important?
Computer numerical control (CNC) is the system by which an operator can control the machining of a tool. Management is carried out through a control panel and a software program. The orders that are executed from here reach the machine so that it complies with the established guidelines. The numerical control is therefore responsible for controlling all the movements of the machine. Among them, not only the cut and the precision of it, but also the speed, the type of displacement, etc. In this way, much more precise, exact and personalized results are achieved. CNC operation The operation of the computerized numerical control is based on the positioning on the X, Y and Z axes. From these three axes, different automatic machining jobs can be carried out on a piece. […]
PPP Configuration
Remember that HDLC is the default encapsulation protocol for Cisco routers. If PPP configuration is not done on Cisco routers, the default encapsulation will be used. To set PPP as the encapsulation method used by a serial interface we need PPP configuration on the serial interfaces. The PPP configuration for the below topology is following. Router1 Router1#configure terminal Router1(config)# interface serial 0/0/0 Router1(config-if)# encapsulation ppp Router2 Router2#configure terminal Router2(config)# interface serial 0/0/0 Router2(config-if)# encapsulation ppp The encapsulation ppp interface command has no arguments. The figure billow illustrates that Router1 and Router2 have been configured with both an IPv4 and an IPv6 address on the serial interfaces. PPP is a Layer 2 encapsulation that supports different Layer 3 protocols. Compression Configuration The command syntax for compression configuration is “compress”. Compression can […]