[LLVMdev] llvm.org outage
Criswell, John T
criswell at ad.uiuc.edu
Mon Dec 21 15:54:10 PST 2009
Dear LLVMers,
There is some scheduled network outages detailed below that affect the llvm.org servers and LLVM Mailing lists. The LLVM server is housed on the fourth floor. I am not sure which rooms house the mailing list servers. All times are Central Standard Time.
If someone from Illinois can distill the relevant parts of this message for LLVM users, I would be most appreciative. I am out of the country with limited time.
Thanks.
-- John T.
________________________________________
From: tsg-announce-bounces at cs.uiuc.edu [tsg-announce-bounces at cs.uiuc.edu] On Behalf Of Mussulman, David E [mussulma at illinois.edu]
Sent: Monday, December 21, 2009 11:31 AM
To: tsg-announce at cs.uiuc.edu
Subject: [TSG-Announce] reminder: network maint. 2west, 1east tomorrow 6-8am
Hello,
A quick reminder that we're doing network maintenance tomorrow morning.
There'll be a short building-wide hiccup at 6am as we transition
routers.
Then we'll be doing maintenance in the the first floor east and second
floor west areas. We expect to have that equipment replaced and
everything back online by 8am.
The earlier announcement is quoted below, or you can read it online at
https://agora.cs.illinois.edu/x/AxywAQ
Cheers,
Dave
On Tue, Dec 15, 2009 at 01:53:10PM -0600, Dave Mussulman wrote:
> Hello,
>
> This important message is to notify you of upcoming network
> maintenance/outages in Siebel Center over the December/January semester
> break. As TSG and CITES implements the next generation Siebel Center
> network, different areas of the building will be without networking
> while we replace equipment and reconnect cables. See below for the
> details and schedules.
>
> Date Time Area
> Tues Dec 22nd 6am-6:30am whole building brief network outage
> Tues Dec 22nd 6am-8am 1st floor east, 2nd floor west outage
> Wed Dec 30th 8am-noon 1st floor west, 2nd floor east outage
> Wed Jan 6th 6am-8am 3rd floor outage (east and west)
> Thurs Jan 7th 6am-8am 4th floor outage (east and west)
>
> We tried to schedule these outages to minimize interruption (scheduling
> around deadlines reported to us, picking Reduced Service Days and
> between-semester-break early mornings, etc.). If you have questions or
> concerns about this maintenance, please let us know.
>
> * Whole building brief network outage - Tuesday December 22nd, 6:00-6:30am
>
> On Tuesday December 22nd at 6am, TSG and CITES will replace/upgrade the
> core networking router. There will be Internet and intra-building
> connectivity loss during this maintenance, but we expect it to be brief
> and up and running again by 6:30am. (This is similar to the maintenance
> during Thanksgiving-week last month.)
>
> * General information about the outages/networking replacement
>
> Each networking closet equipment replacement will follow the same
> procedure: disconnect the existing cables (200-300 per closet), remove
> the old networking switches, install the new switches, and re-cable the
> connections.
>
> Computer Rooms and Lab Rooms will be reconnected first, minimizing the
> downtime to servers in those spaces. The outage should be less than 10
> minutes for systems in those spaces. The wireless access points will be
> reconnected next, bringing our wireless networks back online for the
> affected areas. The office and cubicle jacks will be connected next.
>
> The maintenance/outages will only affect the specific area of the
> building being reconfigured, based on the following schedule:
>
> * 2nd floor west outage - Tuesday December 22nd, 6:00-8am
>
> After the routing replacement on Tuesday, December 22nd, TSG and CITES
> will replace the networking equipment servicing the 2nd floor west side
> of the building. During this time, systems will be disconnected from the
> network in the following areas:
>
> * All 21xx rooms
> * 2227,2229,2231,2233,2235,2237
> * Business office (2210), 2224 and all the 22xx's west of 2224
> * Any networking jack that begins H2W
>
> We anticipate getting everything reconnected by 8am on the 22nd.
>
> * 1st floor east outage - Tuesday December 22nd, 6:00-8am
>
> After the routing replacement on Tuesday, December 22nd, TSG and CITES
> will replace the networking equipment servicing the 2nd floor west area
> of the building. During this time, systems will be disconnected from the
> network in the following areas:
>
> * All 14xx rooms
> * All 13xx rooms
> * 1236
> * Any networking jack that begins with H1E
>
> We anticipate getting everything reconnected by 8am on the 22nd.
>
> * 1st floor west outage - Wednesday, December 30th, 8am-noon
>
> During the Reduced Service Day on December 30th, TSG and CITES will
> replace the networking equipment servicing the 1st floor west area of
> Siebel Center. Starting at 8am, systems will be disconnected in the
> following areas:
>
> * All 11xx rooms
> * All 12xx rooms (except 1236)
> * Any networking jack that begins with H1W
>
> Because of cabling reconfigurations, and the quantity of jacks to
> reconnect in this area, the outage may take a few hours. Wireless
> networking support in this area will be offline while the networking
> racks are being reconfigured. We anticipate getting everything
> reconnected by noon on the 30th.
>
> * 2nd floor east outage - Wednesday, December 30th, 8am-noon
>
> During the Reduced Service Day on December 30th, TSG and CITES will
> replace the networking equipment servicing the 2nd floor east area of
> Siebel Center. Starting at 8am, systems will be disconnected in the
> following areas:
>
> * All 24xx rooms
> * All 23xx rooms
> * All admin office rooms
> * 2226, 2228, 2230
> * Any networking jack that begins with H2E
>
> (The main departmental computer room will stay online and unaffected by
> the 2E maintenance.)
>
> Because of cabling reconfigurations, and the quantity of jacks to
> reconnect in this area, this outage may take a few hours. Wireless
> networking support in this area will be offline while the networking
> racks are being reconfigured. We anticipate getting everything
> reconnected by noon on the 30th.
>
> * 3rd floor outage (east and west) - Wednesday, January 6th, 6am-8am
>
> The networking equipment supporting the east and west sides of the 3rd
> floor will be replaced Wednesday, January 6th. Starting at 6am, systems
> on the third floor will be disconnected. We expect everything to be
> reconnected by 8am.
>
> * All 3xxx rooms
> * Any networking jack that begins with H3W or H3E
>
>
> * 4th floor outage (east and west) - Thursday, January 7th, 6am-8am
>
> The networking equipment supporting the east and west sides of the 4th
> floor will be replaced Thursday, January 7th. Starting at 6am, systems
> on the forth floor will be disconnected. We expect everything to be
> reconnected by 8am.
>
> * All 4xxx rooms
> * Any networking jack that begins with H4W or H4E
>
>
> * Background info
>
> This 2009 network upgrade completes the replacement of the 2003-era
> networking equipment installed with Siebel Center's construction. This
> upgrade adds new functionality and maintainability to our networking
> infrastructure at lower cost. Specifically, this upgrade has the
> following advantages:
>
> * Gigabit Ethernet (10/100/1000M) to each jack
> * Extended Power over Ethernet (802.3af) support
> * Improved computer room networking
> * A tripling of wireless access points in Siebel Center (3rd largest
> install on campus)
> * Dual 10 Gigabit Ethernet connections back to the campus network
> * 10 Gigabit Ethernet-ready support for future research needs
>
> Siebel Center has a very large networking infrastructure. By the
> numbers:
>
> * over 40 IP networks and virtual LANs supporting different firewall
> and routing configurations
> * over 2000 networking jacks, including offices, hallways,
> classrooms/conference rooms, and even outside balconies
> * over 90% of jacks connected (almost a 1:1 jack-to-switch
> utilization)
> * 88 wireless network access points supporting 802.11a, 802.11b/g,
> and 802.11n
> * More than 20 varied networking devices deployed in a dozen
> networking and computer rooms, labs
> * An extended optical fiber network supporting these devices
>
> -- end of forwarded message --
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