Hello, everyone, I have this scenario where a Cisco 2901 Router configured as following :
Building configuration...
Current configuration : 2428 bytes
!
! Last configuration change at 15:04:22 UTC Sat Nov 19 2022
version 15.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
no aaa new-model
!
no ipv6 cef
ip auth-proxy max-login-attempts 5
ip admission max-login-attempts 5
!
no ip domain lookup
ip cef
!
multilink bundle-name authenticated
!
!
crypto pki token default removal timeout 0
!
redundancy
!
interface Embedded-Service-Engine0/0
no ip address
shutdown
!
interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
!
interface GigabitEthernet0/1
ip address 172.16.201.254 255.255.240.0
duplex auto
speed auto
!
interface GigabitEthernet0/2/0
switchport access vlan 2
no ip address
!
interface GigabitEthernet0/3/0
switchport access vlan 2
no ip address
!
interface Vlan1
no ip address
!
interface Vlan2
ip address 192.168.1.254 255.255.255.0
!
no ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
control-plane
!
line con 0
login
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport input all
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line vty 0 4
login
transport input all
!
scheduler allocate 20000 1000
!
end
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Two Cisco 2960 Series with a configuration as follows :
hostname SW_B
!
boot-start-marker
boot-end-marker
!
no ip source-route
no ip gratuitous-arps
ip icmp rate-limit unreachable 1000
!
vtp mode transparent
udld aggressive
!
interface Null0
no ip unreachables
!
interface FastEthernet0/1
description B
switchport access vlan 201
switchport mode access
!
interface FastEthernet0/11
description B
switchport access vlan 201
switchport mode access
!
interface FastEthernet0/12
description B
switchport access vlan 201
switchport mode access
!
interface FastEthernet0/13
description B
switchport access vlan 201
switchport mode access
!
interface FastEthernet0/14
description B
switchport access vlan 201
switchport mode access
!
interface Vlan201
ip address 172.16.201.2 255.255.240.0
no ip redirects
no ip unreachables
no ip proxy-arp
no ip route-cache cef
no ip route-cache
!
_________________________________________________________________________________________________
hostname SW_A
!
boot-start-marker
boot-end-marker
!
no ip source-route
no ip gratuitous-arps
ip icmp rate-limit unreachable 1000
!
vtp mode transparent
udld aggressive
!
interface FastEthernet0/1
description A
switchport access vlan 2
switchport mode access
!
interface FastEthernet0/24
description A
switchport access vlan 2
switchport mode access
!
interface Vlan2
ip address 192.168.1.253 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
no ip route-cache cef
no ip route-cache
!
_________________________________________________________________________________________________A#1-1 : 192.168.1.11 255.255.255.0 Gateway 192.168.1.254
A#1-2 : 192.168.1.12 255.255.255.0 Gateway 192.168.1.254
B#201 : 172.16.201.100 255.255.240 Gateway 172.16.201.254
SVR#201-1 : 172.16.201.101 255.255.240 Gateway 172.16.201.254
SVR#201-2 : 172.16.201.102 255.255.240 Gateway 172.16.201.254
SVR#201-3 : 172.16.201.103 255.255.240 Gateway 172.16.201.254
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Question is : why can't I ping from ex A#1-2 to B#201 ? I mean , why both networks A and B can't see each other?
