Chandhuru,
I made some changes and it working now.
Kindly configure the following and you should be able to ping and telnet to the switches between the layer 2 switches.
1- Remove the Vlan 1 configuration and configure vlan 10 and 20 respectively on the Core switch.
3560:
GigabitEthernet0/2 unassigned YES unset down down
Vlan1 192.168.1.1 YES manual up up
Vlan10 192.168.10.1 YES manual up up
Vlan20 192.168.20.1 YES manual up up
b- Switch 2960- A
Vlan10 192.168.10.2 YES manual up up
Switch#
c- Switch 2960 -B
Vlan10 192.168.20.2 YES manual up up
Switch#
Make sure the port is trunk and its negotiated.(Switchport mode trunk, Switchport trunk encapsulation dot1q,)
Telnet configuration:
Switch 1 & Switch 2
Switch#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#username cisco password cisco
Switch(config)#enab
Switch(config)#enable se
Switch(config)#enable secret cisco
Switch(config)#line vty 0 4
Switch(config-line)#lo
Switch(config-line)#logi
Switch(config-line)#login local
Switch(config-line)#pas
Switch(config-line)#password cisco
Switch(config-line)#end
Switch#
Switch#telnet 192.168.20.2
Trying 192.168.20.2 ...Open
User Access Verification
Username:cisco
Password:
Switch>en
Password:
Switch#exit
I just tested and its working fine now.
HTH
Regards
Inayath
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