Scrapli and Flask – Part 1: GNS3 Lab

Lab /

This is the lab that will be used for the Scrapli & Flask project.

I have this lab setup on an NUC like PC running ESXi. This ESXi host is then connected into my pfSense firewall where it has access to the internet.
I have created a route on the pfSense firewall to route traffic from my network over to the 172.16.1.0/24 lab network. The GNS3 switches are in VLAN1 and therefore all my management network is in VLAN1. For a lab, it’s just easier that way!

Now that everything pings and I can SSH to my switches/routers I can proceed with the initial Scrapli testing.

Notes

  • SW1: 172.16.1.101
  • Everything is in VLAN1
  • Home Network Cloud1
  •  Scrapli connects through home network into 172.16.1.0/24 lab
  • The Windows host is not used a of yet, but left for testing in the future. This has a leg in both my home network and the lab network much like the router RouterToHome.
//Switch Mgmt VLAN1
SW1: 172.16.1.101
SW2: 172.16.1.102
SW3: 172.16.1.103

R1: 172.16.1.104
R2: 172.16.1.105
R3: 172.16.1.106

DC_SW1: 172.16.1.111
DC_SW2: 172.16.1.112
DC_SW3: 172.16.1.113
DC_SW4: 172.16.1.114

Quick IOS Switch Setup Config

interface Ethernet0/0
switchport
switchport mode access
interface Vlan1
ip address 172.16.1.101 255.255.255.0
no shut

ip domain name scrap.lab
no ip domain-lookup

crypto key generate rsa general-keys modulus 1024

line vty 0 4
password Stefan2020
login local 
privilege level 15
transport input ssh

aaa new-model
username admin password 0 Stefan2020
enable secret 0 Stefan2020
ip route 0.0.0.0 0.0.0.0 172.16.1.1

Running Configs

SW1

Current configuration : 1902 bytes
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname SW1
!
boot-start-marker
boot-end-marker
!
!
logging discriminator EXCESS severity drops 6 msg-body drops EXCESSCOLL
logging buffered 50000
logging console discriminator EXCESS
enable secret 5 $1$A1LD$1K.Zk8lm/8.Fum45L7RTM1
!
username admin password 0 Stefan2020
aaa new-model
!
!
!
!
!
aaa session-id common
no ip icmp rate-limit unreachable
!
ip cef
no ip domain-lookup
ip domain-name scrap.lab
!
no ipv6 cef
!
!
!
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
ip tcp synwait-time 5
!
!
!
!
!
!
interface Ethernet0/0
 switchport
 switchport mode access
 duplex auto
!
interface Ethernet0/1
 no ip address
 duplex auto
!
interface Ethernet0/2
 no ip address
 duplex auto
!
interface Ethernet0/3
 no ip address
 duplex auto
!
interface Ethernet1/0
 no ip address
 duplex auto
!
interface Ethernet1/1
 no ip address
 duplex auto
!
interface Ethernet1/2
 no ip address
 duplex auto
!
interface Ethernet1/3
 no ip address
 duplex auto
!
interface Ethernet2/0
 no ip address
 duplex auto
!
interface Ethernet2/1
 no ip address
 duplex auto
!
interface Ethernet2/2
 no ip address
 duplex auto
!
interface Ethernet2/3
 no ip address
 duplex auto
!
interface Ethernet3/0
 no ip address
 duplex auto
!
interface Ethernet3/1
 no ip address
 duplex auto
!
interface Ethernet3/2
 no ip address
 duplex auto
!
interface Ethernet3/3
 no ip address
 duplex auto
!
interface Vlan1
 ip address 172.16.1.101 255.255.255.0
!
!
no ip http server
ip route 0.0.0.0 0.0.0.0 172.16.1.1
!
!
!
!
!
control-plane
!
!
line con 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
line aux 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
line vty 0 4
 privilege level 15
 password Stefan2020
 transport input ssh
!
end

RouterToHome

Current configuration : 3156 bytes
!
! Last configuration change at 01:17:55 UTC Sun Aug 28 2022
!
version 15.6
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname RouterToHome
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
ethernet lmi ce
!
!
!
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
!
!
!
!
!
no ip icmp rate-limit unreachable
!
!
!
!
!
!
no ip domain lookup
ip cef
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
!
!
redundancy
!
no cdp log mismatch duplex
!
ip tcp synwait-time 5
!
!
!
!
!
!
!
!
!
!
!
!
!
interface GigabitEthernet0/0
 ip address dhcp
 duplex auto
 speed auto
 media-type rj45
!
interface GigabitEthernet0/1
 ip address 172.16.1.1 255.255.255.0
 duplex full
 speed auto
 media-type rj45
!
interface GigabitEthernet0/2
 no ip address
 shutdown
 duplex auto
 speed auto
 media-type rj45
!
interface GigabitEthernet0/3
 no ip address
 shutdown
 duplex auto
 speed auto
 media-type rj45
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
control-plane
!
banner exec ^C
**************************************************************************
* 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.                                                      *
**************************************************************************^C
banner incoming ^C
**************************************************************************
* 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.                                                      *
**************************************************************************^C
banner login ^C
**************************************************************************
* 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.                                                      *
**************************************************************************^C
!
line con 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
line aux 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
line vty 0 4
 login
 transport input none
!
no scheduler allocate
!
end

RouterToHome#

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