FroDo IOS upgrade

I’d like to announce a staged upgrade of IOS on all FroDos. This blog post aims to answer some of the questions this work will raise. Feel free to contact the Networks team with any questions at networks@it.ox.ac.uk.

Why?

We currently run 19 different versions of IOS across FroDos. Some of the switches haven’t been upgraded since the original installation (the longest running FroDo had an uptime of over 7 years). Whereas it may be advantageous to stick to a version that works fine on the switch, we decided to roll out updates on all FroDo switches in production. There are 3 main reasons for the mass-upgrade:
- bug fixes
- unification of versions and consistency
- new features

Our intention is to run a single IOS version per platform (3750[G], 3750-X, 3560[CG], 3850, 4900M, 4948E). I’m sure the question will spring to mind – why commit to this work when TONE is under way? Despite work progressing on the new backbone, it’s still quite a long time away and regardless of the fine details of its delivery, we will retain the concept of Point-of-Presence in the future design and thus keep existing switches in production for a considerable length of time. It therefore makes sense to consolidate the IOS versions at this point.

Timescale

We plan to upgrade on a per C-router basis. The schedule we devised is to upgrade and reload roughly 10 FroDos every Tuesday, Wednesday and Thursday until all switches are up to date. The following table details the process:

Date Device VLANs affected Notes
8 April Frodo-110 (acland)
Frodo-113 (edstud)
Frodo-116 (38-40-woodstock-rd)
Frodo-120 (maison-francaise)
Frodo-149 (physics-dwb)
Frodo-150 (eng-ieb)
Frodo-151 (maths)
Frodo-152 (wolfson-building)
Frodo-154 (lady-margaret-hall)
Frodo-155 (mdx-eng)
102, 104, 113, 118, 120, 125, 150, 151, 182, 183, 187, 189, 190, 191, 199, 397, 598, 691, 720, 994 Affects ResNet
9 April Frodo-156 (materials-hume-rothery)
Frodo-157 (e-science)
Frodo-161 (eng-thom)
Frodo-162 (eng-jenkin)
Frodo-163 (eng-holder)
Frodo-164 (eng-etb)
Frodo-165 (14-15-parks-rd)
Frodo-167 (radcliffe-infirmary)
Frodo-168 (new-maths)
Frodo-169 (wolfson)
101, 102, 105, 106, 109, 111, 115, 121, 127, 151, 156, 163, 167, 186, 189, 193, 195, 196, 199, 288, 397, 398, 517, 694, 787, 788, 792, 904, 954, 967, 985 Affects Engineering WLC
10 April Frodo-202 (careers)
Frodo-204 (voltaire)
Frodo-208 (12-bevington)
Frodo-212 (belsyre-court)
Frodo-217 (nissan-institute)
Frodo-219 (wolsey-hall)
Frodo-249 (begbroke)
Frodo-250 (kellogg)
Frodo-251 (ewert-house)
Frodo-282 (williams)
Frodo-293 (summertown-house)
Frodo-296 (st-annes-robert-saunders)
Frodo-297 (merrifield)
202, 204, 208, 220, 222, 249, 252, 282, 283, 285, 286, 289, 290, 292, 296, 297, 298, 299, 397, 675, 678, 717, 720, 722, 794, 977, 989
15 April Frodo-253 (mdx-sthughs)
Frodo-255 (begbroke-iat)
Frodo-257 (st-hughs)
Frodo-258 (st-antonys)
Frodo-260 (univstavertonrd)
Frodo-262 (st-annes-frodo)
Frodo-263 (green-college)
Frodo-264 (wuhmo)
Frodo-203 (13-bradmore-road)
Frodo-281 (vc101br)
Frodo-283 (areastud)
Frodo-292 (trinity-staverton-rd)
Frodo-569 (saville-house)
Frodo-662 (new-college)
121, 187, 188, 196, 203, 205, 206, 209, 214, 257, 279, 280, 281, 284, 284, 293, 295, 295, 296, 297, 329, 608, 673, 677, 679, 680, 681, 681, 682, 720, 796, 856, 989
16 April Frodo-306 (safety)
Frodo-308 (rh)
Frodo-309 (linc-mus-rd)
Frodo-310 (security-services)
Frodo-313 (rai)
Frodo-316 (physics-aopp)
Frodo-324 (dlo)
Frodo-351 (rex-richards)
Frodo-352 (rodney-porter)
Frodo-353 (dyson-perrins)
Frodo-354 (stats)
Frodo-355 (ocgf)
112, 202, 305, 306, 308, 309, 310, 314, 319, 320, 351, 355, 372, 377, 388, 391, 397, 398, 399, 526, 595, 717
17 April Frodo-356 (mdx-mus)
Frodo-358 (chem-physical)
Frodo-359 (beach)
Frodo-360 (rsl)
Frodo-361 (mansfield)
Frodo-362 (bioch)
Frodo-363 (physiology)
Frodo-366 (inorganic-chemistry)
Frodo-367 (keble)
Frodo-368 (earth-sciences)
Frodo-369 (9-parks-rd)
Frodo-370 (museum)
Frodo-625 (exam-schools)
191, 301, 314, 315, 320, 323, 328, 329, 351, 361, 367, 368, 369, 370, 373, 375, 378, 379, 389, 391, 393, 394, 395, 396, 397, 398, 595, 625, 902, 906, 968, 970, 972, 997 Affects Museum Lodge WLC
22 April Frodo-513 (stx-bnc-annexe)
Frodo-515 (merton-annexe)
Frodo-517 (english)
Frodo-518 (law-library)
Frodo-523 (zoo)
Frodo-524 (mrc)
Frodo-527 (mstc)
Frodo-531 (club)
Frodo-549 (balliol-holywell)
Frodo-550 (mdx-zoo)
Frodo-552 (social-sciences)
Frodo-553 (stcatz)
397, 510, 514, 515, 516, 517, 518, 523, 524, 527, 531, 552, 589, 594, 596, 597, 598, 687, 797, 977, 997
23 April Frodo-554 (qeh)
Frodo-555 (plants)
Frodo-559 (chemistry-research-laboratory)
Frodo-561 (path)
Frodo-562 (tinsley)
Frodo-563 (islamic-studies)
Frodo-564 (mdx-ompi)
Frodo-566 (pharm)
Frodo-568 (psy)
74, 182, 183, 214, 288, 301, 351, 360, 378, 388, 389, 391, 397, 398, 501, 507, 522, 553, 559, 561, 562, 580, 588, 590, 591, 592, 593, 595, 596, 597, 599, 678, 683, 694, 719, 727, 810, 860, 893, 893, 902, 948, 955, 956, 968, 976, 977
24 April Frodo-602 (bod-old)
Frodo-604 (music)
Frodo-606 (sheldonian)
Frodo-607 (bod-camera)
Frodo-609 (ruskin-sch)
Frodo-615 (bod-clarendon)
Frodo-619 (all-souls)
Frodo-627 (mhs)
Frodo-628 (jesus)
360, 397, 602, 604, 607, 609, 611, 615, 617, 619, 672, 682, 683, 683, 686, 697, 782, 997
29 April Frodo-629 (exeter)
Frodo-630 (queens)
Frodo-631 (st-edmund-hall)
Frodo-632 (10-merton-street)
Frodo-634 (pembroke-college)
Frodo-635 (chch)
Frodo-639 (albion)
Frodo-640 (hmc)
Frodo-641 (old-indian-institute)
Frodo-645 (campion)
553, 610, 612, 620, 621, 631, 634, 640, 645, 662, 680, 684, 686, 688, 695, 919, 962
30 April Frodo-649 (oii)
Frodo-650 (trinity)
Frodo-651 (sers)
Frodo-652 (magd)
Frodo-653 (littlegate)
Frodo-654 (oriel)
Frodo-655 (balliol)
Frodo-656 (blue-boar-st)
Frodo-657 (mdx-ind)
Frodo-660 (mdx-chch)
Frodo-689 (botanic-garden)
Frodo-692 (stanford-house)
Frodo-698 (chaplaincy)
Frodo-699 (shop)
15, 197, 378, 389, 397, 398, 601, 603, 614, 626, 627, 638, 639, 650, 654, 656, 676, 677, 678, 689, 690, 692, 694, 696, 698, 699, 722, 749, 787, 902, 905, 967, 981, 989, 997 Affects Indian Institute WLC
1 May Frodo-661 (mdx-daubeny)
Frodo-663 (axis-point)
Frodo-664 (corpus-christi)
Frodo-665 (pembroke)
Frodo-666 (merton)
Frodo-667 (univcoll)
Frodo-669 (hertford)
Frodo-671 (wadham)
Frodo-76 (harkness)
Frodo-77 (gibson)
199, 214, 285, 297, 397, 398, 515, 605, 613, 634, 662, 663, 664, 669, 671, 673, 691, 792, 794
6 May Frodo-702 (taylorian)
Frodo-703 (old-boys-high-school)
Frodo-707 (9-stjohnsst)
Frodo-708 (bnc-frewin)
Frodo-711 (arch)
Frodo-713 (classics)
Frodo-716 (clarendon-press)
Frodo-717 (survey)
Frodo-721 (barnett-house)
Frodo-725 (some)
397, 687, 702, 703, 707, 711, 713, 717, 721, 725, 749, 781, 787, 788, 796, 799, 954, 959, 977, 985, 997
7 May Frodo-726 (25-wellington-square)
Frodo-728 (sbs)
Frodo-729 (sackler)
Frodo-730 (lincoln-clarendon-st)
Frodo-732 (oxford-union)
Frodo-734 (castle-mill)
Frodo-749 (orient)
Frodo-750 (worcester-st)
Frodo-751 (dartington)
Frodo-754 (mdx-ash)
284, 309, 397, 398, 675, 716, 720, 728, 729, 732, 749, 761, 783, 789, 790, 797, 906, 959, 975, 977, 997 Affects Ashmolean WLC and ResNet
8 May Frodo-755 (mdx-socstud)
Frodo-756 (ashmolean)
Frodo-757 (stx)
Frodo-759 (regents-park)
Frodo-761 (rewley-house)
Frodo-762 (sjc)
Frodo-764 (st-peters-frodo)
Frodo-765 (castle-mill-2)
Frodo-766 (worcester)
Frodo-767 (nuffield)
Frodo-792 (worcester-street)
Frodo-794 (hayes-house)
320, 330, 370, 374, 375, 397, 398, 611, 675, 680, 691, 697, 701, 705, 709, 710, 715, 718, 720, 722, 733, 734, 756, 757, 781, 782, 784, 786, 793, 794, 795, 797, 977, 989
13 May Frodo-809 (ocdem)
Frodo-821 (fmrib)
Frodo-851 (sports-distributor)
Frodo-855 (well)
Frodo-862 (mdx-ihs)
Frodo-863 (iffley-rd)
Frodo-864 (st-hildas)
Frodo-865 (ndm)
Frodo-867 (kennedy)
Frodo-869 (ccmp)
Frodo-890 (ssho)
Frodo-899 (imm)
Frodo-881 (alan-bullock)
15, 214, 395, 397, 398, 398, 515, 682, 684, 691, 695, 698, 720, 805, 806, 807, 808, 809, 812, 851, 852, 854, 855, 856, 864, 880, 881, 882, 883, 887, 890, 892, 893, 894, 902, 962, 968, 975 Affects IHS WLC

To find out the number of your backbone VLAN and annexe connections, use Looking Glass.

If your FroDo isn’t listed above, it most likely has been upgraded already. The following switches run current IOS as a result of other maintenance work:
Frodo-101 (physics-theory); Frodo-102 (materials-21-banbury); Frodo-104 (materials-12-13-parks-rd); Frodo-159 (mdx-edstud); Frodo-207 (43-banbury-rd); Frodo-213 (anthropology-58a-br); Frodo-215 (anthropology-64-br); Frodo-218 (anthropology-51-br); Frodo-220 (anthropology-61-br); Frodo-301 (physics-clarendon); Frodo-323 (robert-hooke); Frodo-349 (prm); Frodo-357 (mdx-plants); Frodo-551 (life-sciences); Frodo-557 (medawar); Frodo-560 (pathology); Frodo-567 (linacre); Frodo-623 (linc); Frodo-633 (sbs-phase-2); Frodo-648 (mdx-ind2); Frodo-658 (mdx-all-souls); Frodo-659 (mdx-merton); Frodo-670 (brasenose); Frodo-712 (eng-osney); Frodo-752 (beaver-house); Frodo-801 (botnar); Frodo-802 (psych); Frodo-849 (jr2); Frodo-853 (rob); Frodo-856 (richard-doll); Frodo-857 (psych-meg); Frodo-858 (rosemary-rue); Frodo-859 (orcrb); Frodo-905 (16-wellington-square); Frodo-908 (phonetics); Frodo-909 (theology-34a-st-giles); Frodo-910 (counselling); Frodo-914 (new-barnet-house); Frodo-916 (37a-st-giles); Frodo-962 (egrove); Frodo-963 (offices); Frodo-964 (ertegun); Frodo-969 (mdx-oucs); Frodo-972 (oucs)

Impact

Depending on hardware platform, the expected downtime is about 8 to 30 minutes. Catalyst 3750 – the dominant platform – takes only a few minutes to reload to new IOS, but others may include a microcode upgrade, which takes up to half hour. We intend to upgrade and reload the switches on early mornings (7:30-9am) to minimise impact on backbone connections. In the event of a hardware failure, a replacement FroDo will be installed. In reading the above table and assessing disruption to your connectivity, keep in mind annexe connections.

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