ICT Knowledgebase
Let’s go through steps to configure SSH (Secure Shell) in Cisco Router or Switch for secure remote access. Step 1: First step in configuring SSH to securely access the CLI interface of a Cisco Router or Switch remotely is to create a...
Quality of Service (QoS) refers to tools that network devices can use to manage several related characteristics of what happens to a packet while it flows through a network. Specifically, these tools manage the bandwidth made available to that type...
Every SNMP agent has its own Management Information Base. The MIB defines variables whose values are set and updated by the agent. The MIB variables on the devices in the network enable the management software to monitor/control the network device....
SNMP is an application layer protocol that provides a message format for communication between what are termed managers and agents. An SNMP manager is a network management application running on a PC or server, with that host typically being called...
When major events take place, these every networking devices attempt to notify administrators with detailed system messages. These messages vary from the very mundane to those that are incredibly important. Thankfully, administrators have a large...
DNS is a host name to IP address translation service. DNS is a distributed database implemented in a hierarchy of name servers. It is an application layer protocol for message exchange between clients and servers. Every host is identified by the IP...
Dynamic Host Configuration Protocol (DHCP) provides one of the most commonly used services in a TCP/IP network. The vast majority of hosts in a TCP/IP network are user devices, and the vast majority of user devices learn their IPv4 settings using...
To access the Internet, one public IP address is needed, but we can use a private IP address in our private network. The idea of NAT is to allow multiple devices to access the Internet through a single public address. To achieve this, the...
Gateway Load Balancing Protocol (GLBP) is one of First Hop Redundancy Protocol (FHRP) which provides redundancy like other First Hop Redundancy Protocol, also provides load Balancing. It is a Cisco proprietary protocol which can perform both...
VRRP is an open standard protocol, which is used to provide redundancy in a network. It is a network layer protocol (protocol number-112). The number of routers (group members) in a group acts as a virtual logical router which will be the default...
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