On the subject of internet and network security theme: Static Ether-Channel

LACP Is Not Included in Native vSphere Switches
Simply put, the native vSphere switches are not able to respond to LACP frames. It neither listens nor advertises. If you set up LACP on the remote switch, it will never hear a reply back from the vSphere host, and thus an EtherChannel will not be created.
If you want to form an EtherChannel with a vSphere host, you must create a Static EtherChannel. This is also referred to as being “on” as the commands to set up Static in Cisco is “mode on”. When set to Static, there is no discovery or advertisements – the EtherChannel is immediately created by the physical switch.



Comment : we go into the switch and enter commands into it and give 0 / 1-4 commands to hold 4 interfaces at the same time.then our ports 1 to 4 go up.We assign these ports with interface range…………………


Comment : Now we need to give the computers an IP address.This is very important because the computer plays an important role in determining which is the primary computer and which is the first computer to come next…………….

Considering the same topology, you now configure the LACP on both switches. First, the settings for S1:

S1 (config) # interface fa0 / 1
S1 (config-if) # channel group mode is active
S1 (config) # interface fa0 / 2
S1 (config-if) # channel group mode is active

S1 (config) # interface port-channels 1

S1 (config-if) # switchport trunk encapsulation dot1q
S1 (config-if) # switchport mode trunk
Now the settings for S2:

S2 (config) # interface fa0 / 1

S2 (config-if) # channel group mode is active
S2 (config) # interface fa0 / 2
S2 (config-if) # channel group mode is active

S2 (config) # interface port-channels 1

S2 (config-if) # switchport trunk encapsulation dot1q
S2 (config-if) # switchport mode trunk
OSI:
The abbreviation OSI stands for Open Systems Interconnection. It is a reference model that defines the standards for communication protocols, as well as the functions of each layer.

Protocol:

A protocol is a set of rules or algorithms that determine how two objects are connected across a network, and each layer of the OSI model has different protocols. Some of these protocols are TCP, IP, UDP, ARP, DHCP, FTP and others.

NETWORK IDENTIFICATIONS OF THE NETWORK

Hostname:
Each device on the network is associated with a unique device name called the Hostname.
Enter "hostname" in the command line (Administrator mode) and press Enter, which will display the hostname of your computer.

ARP:
ARP stands for Location Protocol.

It is used to convert an IP address to a corresponding physical address (e.g., a MAC address).
ARP is used by the Data Link Layer to determine the MAC address of the receiving machine.

RARP:
RARP stands for reverse address resolution protocol.

As the name suggests, it provides the IP address of the device to which the physical address is assigned as an access. But RARP has become obsolete since the DHCP was photographed.

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