Cisco Catalyst 4507R-E Switch connection problem

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Mar 17th, 2009
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Hi all!


I have a problem with dot1q connection between Cisco Catalyst 4507R-E Switch (WS-X4516 - Supervisor Engine V )and Fortigate 60M firewall.


On Fortigate 60M side I configured dot1q VLANs. On Cisco side I configured trunk port on classic way:


interface GigabitEthernet3/1

switchport trunk encapsulation dot1q

switchport mode trunk


result is:

GigabitEthernet3/1 is down, line protocol is down


There was't a problems with similar connections (dot1q) between Fortigate 60M and other switches, and between Cisco Catalyst 4507R-E Switch and other switches.


Best regards,

Miroslav Petkovic






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glen.grant Tue, 03/17/2009 - 14:59
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If its down/down that is a physical layer problem . Make sure you are using the correct connect cables.

miroslavpetkovic Tue, 03/17/2009 - 15:38
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I made dot1q connection between Cisco Catalyst 4507R-E Switch and 3com switch (Baseline Switch 2924-SFP Plus), and everything was correct.


But I still have a problem with dot1q connection between Cisco Catalyst 4507R-E Switch (WS-X4516 - Supervisor Engine V ), (by using same cable and port) and Fortigate 60M firewall.


It seems, there isn't layer 1 problem.





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