description

Helpful Hints about INE’s virtual lab environment:

Save your configuration changes frequently in the event that you get locked out of a device or lose connectivity
If you are suddenly logged out of the GNS3 lab environment and log back in again, you may see the prompt, “Another GNS3 instance is running, continue? (Y/N)”. Select “Yes”
If you ever lose console access to one (or more) of your devices you will need to reboot the Ubuntu Virtual Machine that is hosting your GNS3 lab environment. To do this,
- Minimize your GNS3 window
- Open the “Terminal” app within the Ubuntu device
- Type “reboot” within the Terminal window
- Wait 20-30 seconds and then click the “Reconnect” option to log back in.

Solutions:

Initial Configuration Solutions:

The following commands would be applied to all devices:


hostname [Device Hostname]
!
enable password cisco
!
no ip domain-lookup
!
interface GigabitEthernetX/Y
 no shutdown
!
line con 0
 logging synchronous

R1 Telnet commands:


line vty 0 4
 password cisco
 login
 transport input telnet

R2 SSH commands:


R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#ip domain-name ine.com
R2(config)#ip ssh version 2
Please create RSA keys to enable SSH (and of at least 768 bits for SSH v2).
R2(config)#crypto key generate rsa
The name for the keys will be: R2.ine.com
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.
How many bits in the modulus [512]: 1024
% Generating 1024 bit RSA keys, keys will be non-    exportable...
[OK] (elapsed time was 1 seconds)
R2(config)#
*Jul 26 20:14:11.257: %SSH-5-ENABLED: SSH 2.0 has been  enabled
R2(config)#username ine privilege 15 password cisco
 WARNING: Command has been added to the configuration using a type 0 password. However, type 0 passwords will soon be deprecated. Migrate to a supported password type
R2(config)#
*Jul 26 20:14:30.792: %AAAA-4-CLI_DEPRECATED: WARNING: Command has been added to the configuration using a type 0 password. However, type 0 passwords will soon be deprecated. Migrate to a supported password type
R2(config)#line vty 0 4
R2(config-line)#transport input ssh
R2(config-line)#login local
R2(config-line)#end
R2#

Implementing Basic Switching Solutions:



    Only relevant portions of the switch configuration are shown below:

    Switch-2#sh run
    Building configuration...

    !
    hostname Switch-2
    !
    vlan 2-3
    !
    !
    interface GigabitEthernet0/0
     switchport trunk encapsulation dot1q
     switchport mode dynamic desirable

    !
    interface GigabitEthernet0/1
     switchport access vlan 2
     switchport mode access

    !
    interface GigabitEthernet0/2
     switchport trunk encapsulation dot1q
     switchport mode trunk
     switchport nonegotiate

    !
    interface GigabitEthernet0/3
     switchport trunk native vlan 2
     switchport trunk encapsulation dot1q
     switchport mode dynamic desirable

    !
    !
    end

    Switch-2#



    [Only relevant portions of the configuration are shown below]

    Switch-3#sh run
    Building configuration...

    !
    vlan 2-3
    !
    interface GigabitEthernet0/0
     switchport access vlan 2
     switchport mode access
    !
    interface GigabitEthernet0/1
     switchport trunk encapsulation dot1q
     switchport mode dynamic auto

    !
    interface GigabitEthernet0/2
     switchport trunk encapsulation dot1q
     switchport mode dynamic desirable

    !
    interface GigabitEthernet3/0
     switchport trunk encapsulation dot1q
     switchport mode dynamic desirable

    !
    end


    Switch-3#



    [Only relevant portions of the configuration are displayed]

    Switch-4#show  run
    Building configuration...
    !
    hostname Switch-4
    !
    !
    vlan 2-3
    !
    interface GigabitEthernet0/0
     switchport trunk native vlan 2
     switchport trunk encapsulation dot1q
     switchport mode dynamic auto

    !
    interface GigabitEthernet0/1
     switchport access vlan 3
     switchport mode access

    !
    interface GigabitEthernet0/2
     switchport trunk encapsulation dot1q
     switchport mode dynamic auto

    !
    interface GigabitEthernet3/0
     switchport trunk encapsulation dot1q
     switchport mode dynamic auto

    !
    end

    Switch-4#

IP Addressing and Subnetting Solutions:

Starting network is 10.10.10.0/24

Link ID	Qty of Hosts	Subnet Mask	Network/Prefix
M/F/G	29	255.255.255.224	10.10.10.0
N/G	12	255.255.255.240	10.10.10.32
C	2	255.255.255.252	10.10.10.48

Device	Interface	IPv4 Address
R1	Gig0/0	10.10.10.49 /30
R1	Gig0/1	10.10.10.2 /27
R2	Gig0/0	10.10.10.50 /30
R2	Gig0/2.2	10.10.10.30 /27
R2	Gig0/2.3	10.10.10.46 /28
R5	Gig0/2	10.10.10.33 /28
PC3	Eth0	10.10.10.1 /27

Configuration of IPv4 addresses:



    R1 IPv4 interface configuration:

    R1#conf t
    Enter configuration commands, one per line.  End with CNTL/Z.
    R1(config)#int gig 0/0
    R1(config-if)#ip address 10.10.10.49 255.255.255.252
    R1(config-if)#no shutdown
    R1(config-if)#exit
    R1(config)#
    *Jul 28 18:57:52.480: %LINK-3-UPDOWN: Interface GigabitEthernet0/0, changed state to up
    *Jul 28 18:57:53.480: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0,     changed state to up
    R1(config)#int gig 0/1
    R1(config-if)#ip add 10.10.10.2 255.255.255.224
    R1(config-if)#no shutdown
    R1(config-if)#end
    R1#



    R2 IPv4 interface configuration:

    R2#conf t
    Enter configuration commands, one per line.  End with CNTL/Z.
    R2(config)#interface gig0/0
    R2(config-if)#ip address 10.10.10.50 255.255.255.252
    R2(config-if)#no shutdown
    R2(config-if)#exit
    *Jul 28 19:00:02.188: %LINK-3-UPDOWN: Interface GigabitEthernet0/0, changed state to up
    *Jul 28 19:00:03.188: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0,     changed state to up
    R2(config-if)#exit
    R2(config)#interface gig 0/2
    R2(config-if)#no shutdown
    R2(config-if)#exit
    R2(config)#interface gig 0/2.2
    R2(config-subif)#encapsulation dot1q 2
    R2(config-subif)#ip address 10.10.10.30 255.255.255.224
    R2(config-subif)#exit
    R2(config)#interface gig 0/2.3                   
    R2(config-subif)#encapsulation dot1q 3                 
    R2(config-subif)#ip address 10.10.10.46 255.255.255.240
    R2(config-subif)#end



    R5 IPv4 interface configuration:

    R5#conf t
    Enter configuration commands, one per line.  End with CNTL/Z.
    R5(config)#interface gig0/2
    R5(config-if)#ip address 10.10.10.33 255.255.255.240
    R5(config-if)#no shutdown
    R5(config-if)#end



    PC3 IPv4 Addressing Configuration

    PC3> ip 10.10.10.1/27 10.10.10.30
    Checking for duplicate address...
    PC3 : 10.10.10.1 255.255.255.224 gateway 10.10.10.30

Verification of IPv4 Addressing

Pinging various addresses from PC3


    PC3> ping 10.10.10.49 -c 2

    84 bytes from 10.10.10.49 icmp_seq=1 ttl=255 time=12.907 ms
    84 bytes from 10.10.10.49 icmp_seq=2 ttl=255 time=9.861 ms

    PC3> ping 10.10.10.2 -c 2

    84 bytes from 10.10.10.2 icmp_seq=1 ttl=255 time=6.282 ms
    84 bytes from 10.10.10.2 icmp_seq=2 ttl=255 time=6.699 ms

    PC3> ping 10.10.10.50 -c 2

    84 bytes from 10.10.10.50 icmp_seq=1 ttl=255 time=7.710 ms
    84 bytes from 10.10.10.50 icmp_seq=2 ttl=255 time=8.574 ms

    PC3> ping 10.10.10.30 -c 2

    84 bytes from 10.10.10.30 icmp_seq=1 ttl=255 time=7.186 ms
    84 bytes from 10.10.10.30 icmp_seq=2 ttl=255 time=9.011 ms

    PC3> ping 10.10.10.46 -c 2

    84 bytes from 10.10.10.46 icmp_seq=1 ttl=255 time=7.251 ms
    84 bytes from 10.10.10.46 icmp_seq=2 ttl=255 time=9.625 ms

    PC3>

Validating that R5 can SSH into R2:


    R5#ssh -l ine 10.10.10.46

    **************************************************************************
    * IOSv is strictly limited to use for evaluation, demonstration and IOS  *
    * education. IOSv is provided as-is and is not supported by Cisco's      *
    * Technical Advisory Center. Any use or disclosure, in whole or in part, *
    * of the IOSv Software or Documentation to any third party for any       *
    * purposes is expressly prohibited except as otherwise authorized by     *
    * Cisco in writing.                                                      *
    **************************************************************************
    Password:

    **************************************************************************
    * IOSv is strictly limited to use for evaluation, demonstration and IOS  *
    * education. IOSv is provided as-is and is not supported by Cisco's      *
    * Technical Advisory Center. Any use or disclosure, in whole or in part, *
    * of the IOSv Software or Documentation to any third party for any       *
    * purposes is expressly prohibited except as otherwise authorized by     *
    * Cisco in writing.                                                      *
    **************************************************************************
    R2#

    Seeing R2's prompt is proof that R5 was successful in SSHing into R2.

Validating that R2 can Telnet into R1:



    R2#telnet 10.10.10.49   
    Trying 10.10.10.49 ... Open

    **************************************************************************
    * IOSv is strictly limited to use for evaluation, demonstration and IOS  *
    * education. IOSv is provided as-is and is not supported by Cisco's      *
    * Technical Advisory Center. Any use or disclosure, in whole or in part, *
    * of the IOSv Software or Documentation to any third party for any       *
    * purposes is expressly prohibited except as otherwise authorized by     *
    * Cisco in writing.                                                      *
    **************************************************************************

    User Access Verification

    Password: 
    **************************************************************************
    * IOSv is strictly limited to use for evaluation, demonstration and IOS  *
    * education. IOSv is provided as-is and is not supported by Cisco's      *
    * Technical Advisory Center. Any use or disclosure, in whole or in part, *
    * of the IOSv Software or Documentation to any third party for any       *
    * purposes is expressly prohibited except as otherwise authorized by     *
    * Cisco in writing.                                                      *
    **************************************************************************
    R1>