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тАО01-31-2007 05:10 PM
тАО01-31-2007 05:10 PM
stack group trunk issue ,5406, 2824
stack group 1 to group 8 are composed by 2824 or 2626 PWR.
5406 use 2 fiber to each stack group.
"trunk a1,a2 trk1 lacp
trunk a3,a4 trk2 lacp
...
"
and in stack group.
fist uplink port and the last switch uplink port:
"interface 24
lacp enable"
Q1: does this trunk type between stack group is suitable ?
Q2: From group 1 to 6, it├в s ok.both fiber led is light. But group 7 and 8 , the trunk fiber led only one light. Why ?
i have check the ProCurve_Switch_5400zl_Series_Reviewers_Guide ,does this issue cause by "28.8 Gbps backplane interface per Line Interface Module " ?
Thank you in advance. please check the attached layout .
ray ma
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тАО02-01-2007 02:31 AM
тАО02-01-2007 02:31 AM
Re: stack group trunk issue ,5406, 2824
What you are trying to do is not a supported trunk configuration. Trunks need to go point-to-point between 2 switches only.
In your setup you are setting the trunk on the 5400 and you are then connecting each port of the trunk to different switches. This is not supported.
You should enable spanning-tree only, or if you want to use trunks, you will need to use 2 trunks per stack.
For example:
5400 - trk1(a1,a2) connect to 2800-1
trk2(a3,a4) connect to 2800-4
2800-1 - trk1(47-48)
2800-2
2800-3
2800-4 - trk1(47-48)
Spanning-tree would also need to be enabled and would block the link between 2800-2 and 2800-3.
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тАО02-01-2007 05:17 AM
тАО02-01-2007 05:17 AM
Re: stack group trunk issue ,5406, 2824
In a simple words, don;t consider your setup with trunks, just say you have a redundant links between the core and each Stacked (cascaded) switches.
You just need to run Spanning Tree to make sure you have a loop free topology, but in this case you will cause one of the links to be blocked by spanning-tree, so you can consider MSTP version in this case if you have Vlans.
If your fiber cable has more than 8 cores so you can get 4 links between the Core and each Stacked groups, in this case, you can implement Matt's suggestion to have 2 Trunks, first one from Core to first switch in the stack and the second one from core to the last Switch in the stack.
Good Luck !!!
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тАО02-02-2007 01:26 AM
тАО02-02-2007 01:26 AM
Re: stack group trunk issue ,5406, 2824
i have done the span config. i have solved this problem today.
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тАО02-02-2007 01:28 AM
тАО02-02-2007 01:28 AM