Configuration of the Storage Network Switches in D2
Each of the racks in the series
D2B01,
D2B02 . . .
D2B05 maps to one complete
row of racks in D1.
Please refer to
https://twiki.cern.ch/twiki/bin/view/LHCb/StorageUplink for more information and examples.
Let us consider the example of one of the racks,
D2B01 (which maps to row 'E' in D1). The patching for this
rack must be done as follows.
Port(s) |
Assignment |
24 |
management link that is patched to sw-d2d05-01 (the management switch) |
21 |
link that is patched to sw-d2d07-s1 (the storage aggregation switch in d2d07) |
1 - 11 |
1 Gbps data links from switches sw-d1e01-d1, sw-d1e02-d1, sw-d1e03-d1, . . ., sw-d1e11-d1 from racks D1E01, D1E02, D1E03, . . . . D1E11 respectively (except D1E05, and sw-d1e05-d1 which don't exist - 05 is an empty position). |
Note: If at any point, the single 1 Gbps link between sw-d2d07-s1 and each of sw-d2d0[1-5]-s1 seems insufficient, link 22 from each of sw-d2d0[1-5]-s1 may be trunked
with link 21 (the existing link) for higher bandwidth.
The above configuration can be applied to the remaining racks in
D2B. For
D2B02, substitute
D1Exx with
D1Dxx, and sw-d1exx with sw-d1dxx.
Likewise, for
D2B04, substitute
D1Exx with
D1Bxx, and sw-d1exx with sw-d1bxx. All the switches in
D2B01-05 must be patched to the aggregation switch
sw-d2d07-s1.
Aggregation Switch sw-d2b07-s1
Port(s) |
Assignment |
1 - 2 |
trunked, patched to sw-d2b01-s1 |
3 - 4 |
trunked, patched to sw-d2b02-s1 |
5 - 6 |
trunked, patched to sw-d2b03-s1 |
7 - 8 |
trunked, patched to sw-d2b04-s1 |
9 - 10 |
trunked, patched to sw-d2b05-s1 |
24 |
patched to the management switch sw-d2d05-01 |
A1 (10 Gbps fiber) |
patched to sw-ux-01 |
VLANs
Except the ones that are trunked, there is only one link between any given pair of switches. Therefor, there is no real need for VLANs here, except for the controls/data separation.
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SaiSuman - 28 Mar 2007
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GuomingLiu - 29 Apr 2008