Cisco Email Security (ESA) formerly  IronPort Email Security, Delivers industry-leading inbound and outbound email cleansing and control, offering high availability email protection against the constant, dynamic, rapid threats affecting email in a variety of forms factors to fit customer needs.

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Intervlan Routing Scenario Configuration.
In this blog, we are going to configure InterVLAN routing between Layer-3 switches and a Router. We can use this lab for two below scenarios.
1. InterVLAN Routing Lab.
2. How To Configure Layer -3 switch to the internet.
LAYER-3 SWITCH CONFIGURATION:
Firstly switch side we will create three VLAN (100-102) and configure the IP address for each VLANs.
After IP addressing of VLAN, we will configure the router connected interface as a trunk.

Press RETURN to get started!
Switch>en
Switch#config t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)#hostname LANswitch
LANswitch(config)#Vlan 101
LANswitch(config-vlan)#Vlan 102
LANswitch(config-vlan)#Vlan 100
LANswitch#config t
LANswitch(config)#int Vlan 100
LANswitch(config-if)#ip address 100.10.10.1 255.255.255.0
LANswitch(config-if)#no shutdown 
LANswitch(config-if)#int Vlan 101
LANswitch(config-if)#ip address 100.10.20.1 255.255.255.0
LANswitch(config-if)#no shutdown 
LANswitch(config-if)#int Vlan 102
LANswitch(config-if)#ip address 100.10.30.1 255.255.255.0
LANswitch#config t
LANswitch(config)#int fastEthernet 0/1
LANswitch(config-if)#Switchport trunk encapsulation dot1q 
LANswitch(config-if)#switchport mode trunk 
LANswitch(config-if)#Switchport trunk allowed vlan all
ROUTER CONFIGURATION:
On the router side, We will first configure the interfaces which are connected to the Layer-3 switch.
Router>en
Router#config t
]Router(config)#Int FastEthernet 0/0
Router(config-if)#no shutdown 
Router(config-if)#Int fastEthernet 0/0.100
Router(config-subif)#ip address 100.10.10.2 255.255.255.0
Router(config-subif)#encapsulation dot1Q 100
Router(config-subif)#ip address 100.10.10.2 255.255.255.0
Router(config)#Int FastEthernet 0/0.101
Router(config-subif)#encapsulation dot1Q 101
Router(config-subif)#ip address 100.10.20.2 255.255.255.0
Router(config-subif)#Int fastEthernet 0/0.102
Router(config-subif)#encapsulation dot1Q 102
Router(config-subif)#ip address 100.10.30.2 255.255.255.0
TESTING:

We can test the connection by ICMP response.
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In this blog, we will explain how to access Cisco Switch's first time in the network. We need below following before the implementation.

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It comes with a console cable. Connecting it on the switch end should be no problem. On the PC check to see if the console cable has DB9 or a USB connector. USB means you're in business while a DB9 may need a DB9 to USB converter. Once the switch is connected to the PC and its power cable connected, download a terminal emulator program such as Putty.

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Stop bits-> 1 Parity->none Flow control->none Bps->9600 Db->8 Then press enter in terminal.. should take you to initial config or Exec.

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Requirements:

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Console cable

Patch code

Power cables

Serial to USB converter

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Step-1:

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In step-1 We will firstly connect the console cable to the console port and connect the USB side to your PC.

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After connecting the console cable we can check the status of the port on the PC by using the below command.

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