- There are multiple options to use SSH in Python but Paramiko is the most popular one. Paramiko is an SSHv2 protocol library for Python. In this lesson, I’ll show you how to use Paramiko to connect to a Cisco IOS router, run a show command, and return the.
- How to configure SSH on Cisco IOS. #crypto key generate rsa The name for the keys will be: R1.NETWORKLESSONS.LOCAL Choose the size of the key modulus in the range of 360 to 4096 for your General Purpose Keys. Choosing a key modulus greater than 512 may take a few minutes. Let’s switch to version 2: R1(config)#ip ssh version 2.
- Router(config)# crypto key generate rsa label ms2 modulus 2048 on usbtoken0: The name for the keys will be: ms2% The key modulus size is 2048 bits% Generating 1024 bit RSA keys, keys will be on-token, non-exportable.
- Jun 11, 2019 SW1 ( config)# crypto key generate rsa. How many bits in the modulus 512: 1024% Generating 1024 bit RSA keys, keys will be non-exportableOK Set the size of key to 1024 bits. If your Cisco Switch is running an older version of Cisco IOS image, then it is extremely recommended that you upgrade to latest Cisco IOS.
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Step 1: Inspect your hardware
Jul 21, 2012 R3(config)# username cisco password Cisco R3(config)# crypto key generate rsa The name for the keys will be: R3.CCIE2B Choose the size of the key modulus in the range of 360 to 2048 for your General Purpose Keys. Choosing a key modulus greater than 512 may take a few minutes. How many bits in the modulus 512: 1024% Generating 1024 bit RSA keys OK.
Check the model number of your shiny new switch. Or, if you are using a spare, check the device hardware and its connected cables for any damages. If everything checks out, power on the switch and verify that all the indicator lights are in working order. Next, use a rollover cable to console into the switch from your computer. To do this, you will need to download and install Putty (or a similar, fun-named software tool). Run Putty and select the 9600 speed serial connection. You are now connected to the switch and ready to check the output of the following commands:
- show version
- show running-config
- show VLAN brief
- show VTP status
- (config)# IP domain-name routerfreak.com
- (config)# hostname Switch01
- (config)# interface VLAN1
- (config)# description Management VLAN
- (config)# IP address 192.168.101.1 255.255.255.0
- vtp [client | server | transparent]
- vtp domain name
- description *** DESCRIPTION ***
- switchport access vlan ###
- sswitchport mode access
- power inline consumption ###
- queue-set 2
- mls qos trust dscp
- storm-control multicast level 50.00
- no cdp enable
- spanning-tree portfast
- spanning-tree bpduguard enable
- Interface GigabitEthernet1/0/1
- description *** UPLINK ***
- switchport trunk encapsulation dot1q
- switchport mode trunk
- speed 1000
- duplex full
- Switch01(config)# crypto key generate rsa
- The name for the keys will be:
- Switch01.routerfreak.com
- How many bits in the modulus [512]: 1024
- % Generating 1024 bit RSA keys, keys will be non-exportable..[OK]
- # line vty 0 4
- (config-line)# transport input ssh
- (config-line)# login local
- (config-line)# password routerfreak
- (config-line)# exit
- # line console 0
- (config-line)# logging synchronous
- (config-line)# login local
- Switch01# service password-encryption
- remote-computer# ssh 192.168.101.1
- Log in as: username
- Password:
- Switch01>en
- Password:
- Switch01#
For spare switches, make sure to delete the flash:vlan.dat file to erase the previous configuration.
Step 2: Set up management IP
Unlike with that punny name you gave your home Wi-Fi network, when setting up the hostname for your switch you should probably stick to a more professional and standard naming convention. Follow any preset naming assignment your company is using and then assign an IP address on the management VLAN. Next, make sure your switch has a set hostname and domain name:
Step 3: Check VTP revision number
Hit the show vtp status command to reveal your Virtual Trunking Protocol (VTP) revision numbers. The VTP revision numbers determine which updates are to be used in a VTP domain. When you set a VTP domain name, the revision number is set to zero—after which each change to the VLAN database increases the revision number by one. Your switch will only process data from a neighboring switch coming from the same domain and if the revision number of the neighboring switch is higher than its own. This means that the switches will update their VLAN configuration based on the VTP information being sent by the switch with the highest revision number.
So, before you add your switch to the network, you’re going to want to set its revision number to zero. To easily reset the domain back to zero, change the config mode to transparent:
Step 4: Configure access ports
You might already have a template ready for access port configuration, but in case you don’t, here are some commands you should use:
Step 5: Configure trunk ports
Enter the command sh int g0/1 capabilities and check the trunking protocol supported. If ISL is supported, you have to issue the switchport trunk encapsulation dot1q on the trunk port configuration. If not, simply type switchport mode trunk. It means there is no other encapsulation supported so there is no need for an encapsulation command. It only supports 802.1Q.
Step 6: Configure access ports
After already performing basic network switch configurations, it’s time to generate RSA keys to be used during the SSH process, using the crypto commands shown here:
Choose the size of the key modulus in the range of 360 to 2048 for your General Purpose Keys. Choosing a key modulus greater than 512 may take a few minutes.
Step 7: Set up VTY line config
If you have not set the console line yet, you can easily input these values:
Set the enable password using the enable secret password command. Then, set the privilege exec password with username name privilege 15 secret password. Make sure that the password-encryption service is activated.
Verify SSH access by typing ‘sh ip ssh’ to confirm that the SSH is enabled. You can now try to log in from a remote machine to verify that you can ssh to your Cisco switch.
Finishing touches
You’ve made it through the learning process with (hopefully) minimum bumps and bruises, and you’re just about ready to ride off. All that’s left is to test your access, reload the switch, and ready the cables. Once that’s done, label your switch, rack it up, and go enjoy doing anything that doesn’t involve switch configuration!
Configuration of SSH on Cisco Switch in Packet Tracer 2019
This Article is about the configuration of SSH on Cisco Switch. You can configure SSH on Cisco devices very easily using these simple steps:
- Crate a Packet Tracer Topology Lab
- Basic IP Setting for connectivity
- Set hostname and domain-name on Switch
- Set console and enable password for SSH login
- Generate the RSA Keys
- Setup the Line VTY configurations
- Create the username password for SSH access from PC
- Verify SSH access
For the configurations of SSH in packet tracer on Cisco switch, you are required to follow the above steps. Let start and perform these steps one by one. (Learn what is PSSH)
Crate a Packet Tracer Topology Lab
Our first step is to open the packet tracer and need to create a simple lab. For this topology we will use only one switch and a PC. Simply drag these two items on dashboard. Now we will connect them with straight through connection.
Basic IP Setting for connectivity
The next step is assign the suitable IP setting to these devices. For keeping it simple and making basic connectivity we will assign just two IP address to these device. We will assign the IP address to PC. For this will open the PC setting and then IP configuration. Here we will assign an IP address to host, in our case we are going to assign it 192.168.1.1 with the default gateway. For default gateway we will assign the IP address 192.168.1.10. We assign the second IP address to our Vlan1 interface on switch. And its IP address will be the gateway of host that is 192.168.1.10. For this we will use the basic commands.
Switch> enable
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Switch# config t
Switch(config)#interface vlan 1
Switch (config-if)# ip address 192.168.1.10 255.255.255.0
Switch (config -if)#no shut
Once you done with basic IP setting, you can verify the connectivity by pinging the interface vlan1 IP from host.
Set host-name and domain-name on Switch
For SSh configurations you need to configure a host-name and domain-name for your switch you can do this with these simple commands.
Switch # config t
Switch (config)#hostname SW1
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SW1 ( config)#ip domain-name w7cloud.com
Set console and enable password for SSH login
![1024 1024](/uploads/1/2/6/0/126048720/546741047.jpg)
![Crypto Key Generate Modulus 1024 Cisco Switch Version 152 Crypto Key Generate Modulus 1024 Cisco Switch Version 152](/uploads/1/2/6/0/126048720/620888168.jpg)
For SSH access it is required that you must configure the console and enable password on your cisco switch. You can set these two passwords with following commands.
SW1 ( config)#line console 0
SW1(config-line)#password cisco
SW1(config -line)#logging synchronous
SW1(config- line)#login local
SW1 (config- line)#exit
SW1 # enable secret cisco
Generate the RSA Keys
Your Cisco switch must have RSA keys that for the SSH process. You can generate the RSA keys with following command:
SW1 ( config)# crypto key generate rsa
How many bits in the modulus [512]: 1024
% Generating 1024 bit RSA keys, keys will be non-exportable…[OK]
Set the size of key to 1024 bits.
If your Cisco Switch is running an older version of Cisco IOS image, then it is extremely recommended that you upgrade to latest Cisco IOS.
Setup the Line VTY configurations
For the configuration of SSH on cisco switch you need the following line vty configurations, and input transport is required to set to SSH. Set the login-to-local, & password to 7.
sw1 ( config)#line vty 0 4
sw1 ( config-line)#transport input ssh
sw1( config -line)#login local
sw1(config- line)#password 7
sw1(config- line ) #exit
Create the username password for SSH access from PC
If you do not have a username for SSH access you need to create a username. You can do it with this simple command:
Sw1# config t
sw1 (config ) # username w7cloud password cisco
Make sure the password encryption services is enabled on your switch, this service will encrypt your password, & when you do “sh run”, you’ll see only the encrypted password, not clear text password.
SW1# service password-encryption
Verify SSH access from Host
Once you done with the above configurations you can test all these configuration by creating a SSH connection from Host. You do it the command ssh –l <username> <IP address>. Open the host command prompt and use the command
C:>ssh -l waqas 192.168.1.10
It will ask for password, provide the password that you created with this username in previous steps. Then it asked for console password and then you need to provide the enable password. Now you are in your Cisco switch. You can perform switch configurations from your host.
From the switch, if you use the command ‘sh ip ssh’, it will also confirm that SSH is enabled on this cisco swith.
For better understanding please watch the video and like it.
Crypto Key Generate Modulus 1024 Cisco Switch Version 152 7
I hope this will be a helpful for you, please share your comments. If you like this then share this on social media. Thank you for reading this.!
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Crypto Key Generate Modulus 1024 Cisco Switch Version 152 2
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