trunk link port is not comingup

Unanswered Question
Apr 29th, 2009
User Badges:
  • Silver, 250 points or more

Hi ,

g0/0 of 3845 router is connected to g3/47 of 3550 switch.


3845 config :


Int g0/0

speed 100

duplex full


int g0/0.11

encapsulation dot1q 11 native

ip address 10.10.10.2 255.255.255.0

standby 11 ip 10.10.10.1


int g0/0.12

encapsulation dot1q 12

ip address 20.20.20.2 255.255.255.0

standby 11 ip 20.20.20.1


4506 switch :


int g3/47

switchport trunk encapsulation dot1q

switchport mode trunk

switchport trunk native vlan 11

switchport trunk allowed vlan 11,12


int vlan 11

ip address 10.10.10.4 255.255.255.0


As soon as I connect Gig0/0 of 3845 router to Gig3/47 of 4506 switch, gig ports of both the deives are down and are not coming up.What could be the reason..


Thanks,

Satish

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Loading.
davy.timmermans Wed, 04/29/2009 - 02:31
User Badges:
  • Silver, 250 points or more

and if you configure speed on the 3845 to auto?


or if you configure both ends to speed 100(0)

smothuku Wed, 04/29/2009 - 03:34
User Badges:
  • Silver, 250 points or more

Hi ,


I tried few combinations by chaning the speed and duplex settings...after that also ports are not coming up...



Thanks,

Satish

smothuku Wed, 04/29/2009 - 03:52
User Badges:
  • Silver, 250 points or more

yah am using machine crimped straight cable..


Thanks,

satish

glen.grant Wed, 04/29/2009 - 04:59
User Badges:
  • Purple, 4500 points or more

IS the module you are trying to connect to actually up , do a show mod and make sure it passed diags and looks ok.

Leo Laohoo Wed, 04/29/2009 - 16:10
User Badges:
  • Super Gold, 25000 points or more
  • Hall of Fame,

    The Hall of Fame designation is a lifetime achievement award based on significant overall achievements in the community. 

  • Cisco Designated VIP,

    2017 LAN, Wireless

Hi Satish,

1. Try a different copper cable;

2. A stupid question: On the 4500, VLAN 11 is "no shut"?

3. Anything in the logs of both appliance to explain why the ports are down?

Actions

This Discussion