Solved

Problem in Trunking two 3560G

Posted on 2009-03-30
4
416 Views
Last Modified: 2012-05-06
I am facing problem in trunking two 3560 G Switches.  

Trunk says up but the vlan stays down.

Switch #1 3560G

interface Port-channel5
 switchport trunk encapsulation dot1q
 switchport mode trunk

interface GigabitEthernet0/17
  switchport trunk encapsulation dot1q
 switchport mode trunk
 channel-group 5 mode on

 Switch #2

interface Port-channel5
 switchport trunk encapsulation dot1q
 switchport mode trunk

interface GigabitEthernet0/4
  switchport trunk encapsulation dot1q
 switchport mode trunk
 channel-group 5 mode on


Switch (1) is trunked with 5 more 2950 and it works just fine but  for this switch (3560G) - management stays down

0
Comment
Question by:pehalwaan
  • 2
  • 2
4 Comments
 
LVL 50

Expert Comment

by:Don Johnston
ID: 24025281
Is there just the one link between these two switches? If so, why the channel-group command?

Go to the physical interfaces and issue the command "no channel-group 5 mode on".

Secondly, does the VLAN exist? "show vlan brief"
0
 
LVL 3

Author Comment

by:pehalwaan
ID: 24025326
Currently there exist only one link. But I plan to add one more as soon as i figure out what's wrong .

vlan exists on switch (1)

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------


1    default                          active    Gi0/20, Gi0/26, Gi0/28, Gi0/29, Gi0/30, Gi0/32, Gi0/39, Gi0/40, Gi0/43, Gi0/44, Gi0/48, Gi0/49, Gi0/50
                                                Gi0/51, Gi0/52
2    VLAN0002                         active
3    VLAN0003                         active
4    VLAN0004                         active
10   VLAN0010                         active
20   VLAN0020                         active
24   VLAN0024                         active
25   VLAN0025                         active
26   VLAN0026                         active
27   VLAN0027                         active
30   VLAN0030                         active
39   VLAN0039                         active
43   VLAN0043                         active
59   VLAN0059                         active
99   VLAN0099                         active
101  VLAN0101                         active
128  VLAN0128                         active
199  VLAN0199                         active    Gi0/3, Gi0/4, Gi0/19, Gi0/23, Gi0/24, Gi0/25, Gi0/31, Gi0/33, Gi0/34, Gi0/35, Gi0/36, Gi0/37, Gi0/38, Gi0/41
                                                Gi0/42, Gi0/45, Gi0/46
200  VLAN0200                         active    Gi0/5, Gi0/6, Gi0/27
201  VLAN0201                         active    Gi0/7, Gi0/8
202  VLAN0202                         active    Gi0/9, Gi0/10
400  VLAN0400                         active    Gi0/1, Gi0/2, Gi0/18, Gi0/22
1002 fddi-default                     act/unsup
1003 token-ring-default               act/unsup
1004 fddinet-default                  act/unsup
1005 trnet-default                    act/unsup

but does not show up on  Switch (2)

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Gi0/1, Gi0/2, Gi0/3, Gi0/5
                                                Gi0/6, Gi0/7, Gi0/8, Gi0/9
                                                Gi0/10, Gi0/11, Gi0/12, Gi0/13
                                                Gi0/14, Gi0/15, Gi0/16, Gi0/17
                                                Gi0/18, Gi0/19, Gi0/20, Gi0/21
                                                Gi0/22, Gi0/23, Gi0/24, Gi0/25
                                                Gi0/26, Gi0/27, Gi0/28, Gi0/29
                                                Gi0/30, Gi0/31, Gi0/32, Gi0/33
                                                Gi0/34, Gi0/35, Gi0/36, Gi0/37
                                                Gi0/38, Gi0/39, Gi0/40, Gi0/41
                                                Gi0/42, Gi0/43, Gi0/44, Gi0/45
                                                Gi0/46, Gi0/47, Gi0/48, Gi0/49
                                                Gi0/50, Gi0/51, Gi0/52
1002 fddi-default                     act/unsup
1003 token-ring-default               act/unsup
1004 fddinet-default                  act/unsup
1005 trnet-default                    act/unsup

0
 
LVL 50

Accepted Solution

by:
Don Johnston earned 500 total points
ID: 24027849
First off, if you don't have multiple links, you don't need etherchannel. So until you get the single link passing traffic, I would get rid of any etherchannel commands.

Second, in order for traffic to pass for a specific VLAN, it must exist on all switches that the traffic will pass through. So go to the switch that doesn't have the VLANs and create them (either manually or with VTP).

Then post the output of "show int status" and "show int trunk".


0
 
LVL 3

Author Closing Comment

by:pehalwaan
ID: 31564662
I was able to get that done last night. Thanks for you help.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

I see many questions here on Experts Exchange regarding switch port configurations and trunks. This article is meant for beginners in the subject to help to get basic knowledge about Virtual Local Area Network (VLAN (http://en.wikipedia.org/wiki/Vir…
I eventually solved a perplexing problem setting up telnet for a new switch.  I installed a new Cisco WS-03560X-24P switch connected to an existing Cisco 4506 running a WS-X4013-10GE Sup II-Plus. After configuring vlans and trunking,  I could no…
This Micro Tutorial will teach you how to censor certain areas of your screen. The example in this video will show a little boy's face being blurred. This will be demonstrated using Adobe Premiere Pro CS6.
Learn how to create flexible layouts using relative units in CSS.  New relative units added in CSS3 include vw(viewports width), vh(viewports height), vmin(minimum of viewports height and width), and vmax (maximum of viewports height and width).

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

24 Experts available now in Live!

Get 1:1 Help Now