I have the following configurations for switch to switch connectivety.
sh int
sh config int
2960 will not take full duplex setting.
Thanks,
Core switch
WS-C4506 cat4000-i9s-mz.122-25.EWA10.bin
FastEthernet5/8 is up, line protocol is up (connected)
Hardware is Fast Ethernet Port
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
Keepalive set (10 sec)
Full-duplex, 100Mb/s, link type is auto, media type is 100BaseFX
interface FastEthernet5/8
switchport trunk encapsulation dot1q
switchport mode trunk
duplex full
spanning-tree portfast trunk
WS-C2960 c2960-lanbase-mz.122-25.SEE3/c2960-lanbase-mz.122-25.SEE3.bin
GigabitEthernet0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
Keepalive not set
Half-duplex, 100Mb/s, link type is auto, media type is 100BaseFX SFP
interface GigabitEthernet0/1
switchport mode trunk
spanning-tree portfast trunk
