Internet2 Advanced Layer 2 Service Network Operations Report
04/07/2014 - 04/13/2014

Internet2 Advanced Layer 2 Service Network Operations Center
at Indiana University

New Connections

None


Upgrades

AL2S Tucson (TUCS) node inserted, 04/12/2014 @ 11:45 UTC


New Services

None


Unscheduled Outages Summary

Ticket Number Customer Impact Network Impact Title Outage Type Start Time (UTC) End Time (UTC)

15482-High 2-High Brief Outage - I2 AL2S Backbone ATLA-CHIC Undetermined 04/07/2014 7:36 PM 04/07/2014 7:37 PM
15502-High 2-High Outage Resolved - I2 AL2S Backbone COLU4-KANS Hardware 04/08/2014 5:11 AM 04/08/2014 6:43 AM
15512-High 2-High Brief Outage - I2 AL2S Backbone LOSA-SUNN Undetermined 04/08/2014 8:20 AM 04/08/2014 8:21 AM
15542-High 2-High Brief Outage - I2 AL2S Backbone ATLA-CHIC Undetermined 04/09/2014 2:45 PM 04/09/2014 2:46 PM
15552-High 2-High Outage Resolved - I2 AL2S Backbone DALL-TULS Hardware 04/09/2014 3:59 PM 04/10/2014 5:37 AM
15593-Elevated 3-Elevated Degradation Resolved - I2 AL2S Core Node (CHIC) Hardware 04/10/2014 4:38 PM 04/10/2014 5:32 PM
15704-Normal 2-High Outage Resolved - I2 AL2S Backbone ELPA-PHOE Unannounced Maintenance 04/12/2014 5:38 AM 04/12/2014 6:19 AM
15712-High 2-High Brief Outage Resolved- I2 AL2S Backbone MINN-SEAT Circuit - Bumped Fiber 04/12/2014 8:08 AM 04/12/2014 8:09 AM
04/12/2014 8:21 AM 04/12/2014 8:22 AM
15742-High 2-High Brief Outage - I2 AL2S Backbone CHIC-COLU4 Undetermined 04/13/2014 6:26 PM 04/13/2014 6:27 PM

Unscheduled Outages Detail


Ticket No.:1548:135
Subject:Brief Outage - I2 AL2S Backbone ATLA-CHIC
Affected:Backbone ATLA-CHIC
Start Time:Monday, April 7, 2014, 7:36 PM (1936) UTC
End Time:Monday, April 7, 2014, 7:37 PM (1937) UTC
Description:Backbone ATLA-CHIC was briefly unavailable. Internet2 Engineers are investigating the cause; however, the reason for the outage is pending. Workgroup administrators receive notifications from OESS regarding circuits re-routed on the backbone.

Ticket No.:1550:135
Subject:Outage Resolved - I2 AL2S Backbone COLU4-KANS
Affected:Backbone COLU4-KANS
Start Time:Tuesday, April 8, 2014, 5:11 AM (0511) UTC
End Time:Tuesday, April 8, 2014, 6:43 AM (0643) UTC
Description:Backbone COLU4-KANS is now available. Internet2's circuit provider has been contacted and the reason for the outage was due to a suspected hardware issue. No further outages are to be expected. Workgroup administrators receive notifications from OESS regarding circuits re-routed on the backbone.

Ticket No.:1551:135
Subject:Brief Outage - I2 AL2S Backbone LOSA-SUNN
Affected:Backbone LOSA-SUNN
Start Time:Tuesday, April 8, 2014, 8:20 AM (0820) UTC
End Time:Tuesday, April 8, 2014, 8:21 AM (0821) UTC
Description:Backbone LOSA-SUNN was briefly unavailable. Internet2 Engineers are investigating the cause; however, the reason for the outage is pending. Workgroup administrators receive notifications from OESS regarding circuits re-routed on the backbone.

Ticket No.:1554:135
Subject:Brief Outage - I2 AL2S Backbone ATLA-CHIC
Affected:Backbone ATLA-CHIC
Start Time:Wednesday, April 9, 2014, 2:45 PM (1445) UTC
End Time:Wednesday, April 9, 2014, 2:46 PM (1446) UTC
Description:Backbone ATLA-CHIC was breifly unavailable. Internet2 Engineers are investigating the cause; however, the reason for the outage is pending. Workgroup administrators receive notifications from OESS regarding circuits re-routed on the backbone.

Ticket No.:1555:135
Subject:Outage Resolved - I2 AL2S Backbone DALL-TULS
Affected:Backbone DALL-TULS
Start Time:Wednesday, April 9, 2014, 3:59 PM (1559) UTC
End Time:Thursday, April 10, 2014, 5:37 AM (0537) UTC
Description:Backbone DALL-TULS is now available. Level(3) Communications has determined the problem to be a bad OCLD in opt.tuls. During the maintenance, the part was replaced and services have been restored. Maintenance has been completed.

Ticket No.:1559:135
Subject:Degradation Resolved - I2 AL2S Core Node (CHIC)
Affected:Core Node (CHIC) and its Connector(s) and Participants
Start Time:Thursday, April 10, 2014, 4:38 PM (1638) UTC
End Time:Thursday, April 10, 2014, 5:32 PM (1732) UTC
Description:Core Node (CHIC) is now available after being in a degraded condition. Internet2 Engineers have advised that the Chicago node required a reboot to resolve the degraded condition.

Ticket No.:1570:135
Subject:Outage Resolved - I2 AL2S Backbone ELPA-PHOE
Affected:Backbone ELPA-PHOE
Start Time:Saturday, April 12, 2014, 5:38 AM (0538) UTC
End Time:Saturday, April 12, 2014, 6:19 AM (0619) UTC
Description:The above listed is now available. Level(3) Engineers were replacing a card in Phoenix, AZ that was not expected to be service impacting. Work has been completed and no further outages are expected.

Ticket No.:1571:135
Subject:Brief Outage Resolved- I2 AL2S Backbone MINN-SEAT
Affected:Backbone MINN-SEAT
Start Time:Saturday, April 12, 2014, 8:08 AM (0808) UTC
End Time:Saturday, April 12, 2014, 8:09 AM (0809) UTC
Start Time:Saturday, April 12, 2014, 8:21 AM (0821) UTC
End Time:Saturday, April 12, 2014, 8:22 AM (0822) UTC
Description:Backbone MINN-SEAT was briefly unavailable. Vendor technicians bumped a fiber while doing work to complete maintenance in Minneapolis. Maintenance has been completed and no further issues are expected.

Ticket No.:1574:135
Subject:Brief Outage - I2 AL2S Backbone CHIC-COLU4
Affected:Backbone CHIC-COLU4
Start Time:Sunday, April 13, 2014, 6:26 PM (1826) UTC
End Time:Sunday, April 13, 2014, 6:27 PM (1827) UTC
Description:Backbone CHIC-COLU4 was briefly unavailable. Internet2 Engineers are investigating the cause; however, the reason for the outage is pending. Workgroup administrators receive notifications from OESS regarding circuits re-routed on the backbone.

Scheduled Maintenances Summary

Ticket Number Customer Impact Network Impact Title Maintenance Type Start Time (UTC) End Time (UTC)

1546 3-Elevated 2-High Emergency Maintenance Completed 1 of 2 - I2 AL2S Backbone MINN-SEAT Hardware 04/09/2014 6:08 AM 04/09/2014 6:16 AM
1547 3-Elevated 2-High Emergency Maintenance Completed 2 of 2 - I2 AL2S Backbone MINN-SEAT Hardware 04/10/2014 6:08 AM 04/10/2014 6:16 AM
1560 1-Critical 1-Critical Emergency Maintenance Completed - I2 AL2S Core Node (CHIC) Hardware 04/10/2014 5:32 PM 04/10/2014 5:36 PM
1556 3-Elevated 2-High Emergency Maintenance Completed - I2 AL2S Backbone ATLA-CHIC Hardware 04/11/2014 5:05 AM 04/11/2014 5:25 AM
1475 3-Elevated 2-High Maintenance Completed - I2 AL2S Backbone ELPA-PHOE Hardware 04/11/2014 7:10 AM 04/11/2014 7:26 AM
1563 3-Elevated 2-High Emergency Maintenance Completed - I2 AL2S Backbone ELPA-PHOE Hardware 04/12/2014 11:02 AM 04/12/2014 11:55 AM

Scheduled Maintenances Detail

Ticket No.:1546:135
Subject:Emergency Maintenance Completed 1 of 2 - I2 AL2S Backbone MINN-SEAT
Affected:Backbone MINN-SEAT
Start Time:Wednesday, April 9, 2014, 6:08 AM (0608) UTC
End Time:Wednesday, April 9, 2014, 6:16 AM (0616) UTC
Description: Backbone MINN-SEAT was briefly unavailable while Zayo Engineers performed maintenance. Maintenance has now completed. Backbone traffic was re-routed during this maintenance. Workgroup administrators will receive notifications from OESS regarding circuits re-routed on the backbone. This is maintenance window 1 of 2.

Ticket No.:1547:135
Subject:Emergency Maintenance Completed 2 of 2 - I2 AL2S Backbone MINN-SEAT
Affected:Backbone MINN-SEAT
Start Time:Thursday, April 10, 2014, 6:08 AM (0608) UTC
End Time:Thursday, April 10, 2014, 6:16 AM (0616) UTC
Description: Backbone MINN-SEAT was unavailable while Zayo Engineers performed maintenance. Backbone traffic was re-routed during this maintenance. This was maintenance window 2 of 2. Maintenance has been completed.

Ticket No.:1560:135
Subject:Emergency Maintenance Completed - I2 AL2S Core Node (CHIC)
Affected:Core Node (CHIC) and its Connector(s) and Participants
Start Time:Thursday, April 10, 2014, 5:32 PM (1732) UTC
End Time:Thursday, April 10, 2014, 5:36 PM (1736) UTC
Description: Core Node (CHIC) will be briefly unavailable while Internet2 Engineers performed hardware maintenance. No further outages are anticipated.

Ticket No.:1556:135
Subject:Emergency Maintenance Completed - I2 AL2S Backbone ATLA-CHIC
Affected:Backbone ATLA-CHIC
Start Time:Friday, April 11, 2014, 5:05 AM (0505) UTC
End Time:Friday, April 11, 2014, 5:25 AM (0525) UTC
Description: Backbone ATLA-CHIC was unavailable while Level 3 Engineers performed emergency maintenance. An outage of less than 30 minutes was observed. Maintenance has been completed. Backbone traffic was re-routed during this maintenance. Workgroup administrators will receive notifications from OESS regarding circuits re-routed on the backbone.

Ticket No.:1475:135
Subject:Maintenance Completed - I2 AL2S Backbone ELPA-PHOE
Affected:Backbone ELPA-PHOE
Start Time:Friday, April 11, 2014, 7:10 AM (0710) UTC
End Time:Friday, April 11, 2014, 7:26 AM (0726) UTC
Description: Backbone ELPA-PHOE was unavailable while Level3 Engineers performed maintenance to swap a card in an attempt to clear suspect pluggable alarms on opt.phoe. The maintenance was not successful in clearing these alarms. The maintenance has been completed. Traffic was re-routed during the maintenance.

Ticket No.:1563:135
Subject:Emergency Maintenance Completed - I2 AL2S Backbone ELPA-PHOE
Affected:Backbone ELPA-PHOE
Start Time:Saturday, April 12, 2014, 11:02 AM (1102) UTC
End Time:Saturday, April 12, 2014, 11:55 AM (1155) UTC
Description: Backbone ELPA-PHOE was unavailable while Internet2 Engineers performed maintenance to install a new core node in Tucson, AZ. Maintenance has been completed. Traffic re-routed during the maintenance.


Downtime and Availability



Internet2 Advanced Layer 2 Service Core NodesDown TimeReporting Period Availability52 Week Availability
sdn-sw.albu.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 100.00000% 100.00000%
sdn-sw.alba.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99696% 100.00000%
sdn-sw.ashb.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99677% 100.00000%
sdn-sw.atla.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99867% 100.00000%
sdn-sw.bost.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99564% 100.00000%
sdn-sw.char.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 100.00000% 100.00000%
sdn-sw.chic.net.internet2.edu 0 hr 58 min0 hr 54 min 99.42460%99.46429% 99.96376% 99.98975%
sdn-sw.clev.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99867% 100.00000%
sdn-sw.dall.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99924% 100.00000%
sdn-sw.denv.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.85770% 99.85902%
sdn-sw.elpa.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99943% 100.00000%
sdn-sw.houh.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.92752% 99.92885%
sdn-sw.jack.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99829% 100.00000%
sdn-sw.jcsn.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.98425% 99.98520%
sdn-sw.kans.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99867% 100.00000%
sdn-sw.losa.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99886% 100.00000%
sdn-sw.minn.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.98596% 100.00000%
sdn-sw.newy32aoa.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99905% 100.00000%
sdn-sw.phil.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99924% 100.00000%
sdn-sw.phoe.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99715% 100.00000%
sdn-sw.pitt.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99962% 100.00000%
sdn-sw.port.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99924% 100.00000%
sdn-sw.rale.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.72602% 99.73550%
sdn-sw.salt.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99829% 100.00000%
sdn-sw.seat.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99279% 100.00000%
sdn-sw.star.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99791% 100.00000%
sdn-sw.sunn.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99867% 100.00000%
sdn-sw.tuls.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99867% 100.00000%
sdn-sw.wash.net.internet2.edu 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99810% 100.00000%

Aggregate Internet2 Advanced Layer 2 Service Core Nodes0 hr 58 min0 hr 58 min99.98016%99.98153%99.97949%99.98270%

NOTE: Numbers in italics represent downtime with scheduled maintenance excluded. Internet2's definition of scheduled maintenance is any anticipated outage announced at least 72 hours in advance of the outage start time.

Internet2 Advanced Layer 2 Service Backbone CircuitsDown Time Reporting Period Availability52 Week Availability
I2-ALBA-BOST-100GE-09210 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99393%99.99924%
I2-ALBA-CLEV-100GE-07735 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99279%99.99981%
I2-ASHB-CHIC-100GE-11803 0 hr 58 min0 hr 54 min 99.42460%99.46429% 99.98900%99.98975%
I2-ASHB-WASH-100GE-11823 0 hr 0 min0 hr 0 min 100.00000%100.00000% 100.00000%100.00000%
I2-ATLA-CHAR-100GE-07738 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.97970%99.97970%
I2-ATLA-CHIC-100GE-07740 1 hr 20 min0 hr 56 min 99.20635%99.44444% 99.68788%99.78806%
I2-ATLA-HOUH-10GE-07742 0 hr 0 min0 hr 0 min 100.00000%100.00000% 100.00000%100.00000%
I2-ATLA-JACK-100GE-07739 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99412%100.00000%
I2-ATLA-JCSN-100GE-10734 0 hr 0 min0 hr 0 min 100.00000%100.00000% 100.00000%100.00000%
I2-ATLA-JCSN-100GE-10784 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.77174%99.77269%
I2-ATLA-WASH-100GE-07738 0 hr 0 min0 hr 0 min 100.00000%100.00000% 100.00000%100.00000%
I2-BATO-HOUH-100GE-08860 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.92771%99.92847%
I2-BATO-JACK-100GE-11005 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.98824%99.99962%
I2-CHAR-RALE-100GE-10633 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.97894%99.97970%
I2-CHIC-COLU4-100GE-11554 0 hr 59 min0 hr 55 min 99.41468%99.45437% 99.98881%99.98956%
I2-CHIC-KANS-100GE-07745 0 hr 58 min0 hr 54 min 99.42460%99.46429% 99.96793%99.96907%
I2-CHIC-STAR-100GE-07743 0 hr 58 min0 hr 54 min 99.42460%99.46429% 99.84859%99.86358%
I2-CLEV-NEWY32AOA-100GE-07735 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.98577%99.99886%
I2-CLEV-PITT-100GE-10334 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99336%100.00000%
I2-CLEV-STAR-100GE-07736 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.94991%99.98368%
I2-COLU4-KANS-100GE-11548 1 hr 32 min1 hr 32 min 99.08730%99.08730% 99.98254%99.98254%
I2-DALL-HOUH-100GE-07751 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.92809%99.92885%
I2-DALL-TULS-100GE-11300 13 hr 38 min13 hr 38 min 91.88492%91.88492% 99.84403%99.84479%
I2-DENV-KANS-100GE-07746 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.83075%99.88141%
I2-DENV-SALT-100GE-07747 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.92676%99.96983%
I2-ELPA-HOUH-100GE-07749 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.37253%99.48144%
I2-ELPA-PHOE-100GE-07750 1 hr 50 min0 hr 41 min 98.90873%99.59325% 99.89716%99.91595%
I2-HOUH-JCSN-100GE-10783 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.91310%99.91405%
I2-HOUH-TULS-100GE-07751 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.68636%99.75068%
I2-KANS-TULS-100GE-07753 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.91443%99.91500%
I2-LOSA-PHOE-100GE-09190 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.80779%99.80912%
I2-LOSA-SALT-100GE-07757 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.91481%99.93226%
I2-LOSA-SUNN-100GE-07755 0 hr 1 min0 hr 1 min 99.99008%99.99008% 99.89697%99.89811%
I2-MINN-SEAT-100GE-09130 0 hr 18 min0 hr 2 min 99.82143%99.98016% 99.55525%99.70230%
I2-MINN-STAR-100GE-09299 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.88654%99.90475%
I2-NEWY23AOA-PHIL-100GE-07759 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99924%100.00000%
I2-PHIL-WASH-100GE-10867 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.89375%100.00000%
I2-PORT-SEAT-100GE-08997 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99829%100.00000%
I2-PORT-SUNN-100GE-10343 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.99829%99.99962%
I2-RALE-WASH-100GE-08888 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.79926%99.82829%
I2-SALT-SUNN-100GE-07766 0 hr 0 min0 hr 0 min 100.00000%100.00000% 99.97533%99.99658%

Aggregate All Internet2 Advanced Layer 2 Service Backbone Circuits 22 hr 32 min2 hr 5 min 99.67286%99.70311% 99.90389%99.92433%


NOTE: Numbers in italics represent downtime with scheduled maintenance excluded. Internet2's definition of scheduled maintenance is any anticipated outage announced at least 72 hours in advance of the outage start time.



Upcoming Scheduled Maintenances

Ticket No.:1543:135
Subject:Maintenance Completed 1 of 2 - I2 AL2S Backbone DALL-HOUH
Affected:Backbone DALL-HOUH
Start Time:Tuesday, April 15, 2014, 5:00 AM (0500) UTC
End Time:Tuesday, April 15, 2014, 11:00 AM (1100) UTC
Description: Backbone DALL-HOUH was unavailable while Level(3) Communications relocate cable in Dallas, TX. Backbone traffic re-routed during this maintenance. Workgroup administrators received notifications from OESS regarding circuits re-routed on the backbone. Maintenance has been completed and will not require the alternate window.

Ticket No.:1521:135
Subject:Maintenance - I2 AL2S Backbone BATO-JACK
Affected:Backbone BATO-JACK
Start Time:Wednesday, April 16, 2014, 4:00 AM (0400) UTC
End Time:Wednesday, April 16, 2014, 6:00 AM (0600) UTC
Description: Backbone BATO-JACK will be unavailable while I2 Engineers perform maintenance. An outage is expected; however, the entire window is reserved. Backbone traffic will re-route during this maintenance. Workgroup administrators will receive notifications from OESS regarding circuits re-routed on the backbone.

Ticket No.:1545:135
Subject:Maintenance 2 of 2 - I2 AL2S Backbone DALL-HOUH
Affected:Backbone DALL-HOUH
Start Time:Wednesday, April 16, 2014, 5:00 AM (0500) UTC
End Time:Wednesday, April 16, 2014, 11:00 AM (1100) UTC
Description: Backbone DALL-HOUH will be unavailable while Level(3) Communications relocate cable in Dallas, TX. An outage of 1 hour is expected; however the entire window is reserved. Backbone traffic will re-route during this maintenance. This is Maintenance window 2 of 2. Workgroup administrators will receive notifications from OESS regarding circuits re- routed on the backbone. An alternate window has been reserved for 4/16 at 0500 UTC, should it be required.

Ticket No.:1575:135
Subject:Maintenance 1 of 2 - I2 AL2S Backbone ATLA-CHIC
Affected:Backbone ATLA-CHIC
Start Time:Thursday, April 24, 2014, 4:00 AM (0400) UTC
End Time:Thursday, April 24, 2014, 10:00 AM (1000) UTC
Description: Backbone ATLA-CHIC will be unavailable while Level(3) Communications relocate cable due to mandated bridge installation project between Greensburg, IN and Indianapolis, IN. An outage of 30 minutes is expected; however the entire window is reserved. *This is the first of two maintenance windows*

Ticket No.:1565:135
Subject:Maintenance - I2 AL2S Backbone CHIC-KANS
Affected:Backbone CHIC-KANS
Start Time:Thursday, April 24, 2014, 7:00 AM (0700) UTC
End Time:Thursday, April 24, 2014, 11:00 AM (1100) UTC
Description: Backbone CHIC-KANS will be unavailable while Level(3) Engineers perform maintenance. An outage of 30 minutes is expected; however, the entire window is reserved. Backbone traffic will re-route during this maintenance. Workgroup administrators will receive notifications from OESS regarding circuits re-routed on the backbone.

Ticket No.:1583:135
Subject:Maintenance 2 of 2 - I2 AL2S Backbone ATLA-CHIC
Affected:Backbone ATLA-CHIC
Start Time:Friday, April 25, 2014, 4:00 AM (0400) UTC
End Time:Friday, April 25, 2014, 10:00 AM (1000) UTC
Description: Backbone ATLA-CHIC will be unavailable while Level(3) Communications relocate cable due to mandated bridge installation project between Greensburg, IN and Indianapolis, IN. An outage of 30 minutes is expected; however the entire window is reserved. *This is the second of two maintenance windows*

Ticket No.:1535:135
Subject:Maintenance 1 of 2 - I2 AL2S Backbone MINN-SEAT
Affected:Backbone MINN-SEAT
Start Time:Saturday, April 26, 2014, 7:01 AM (0701) UTC
End Time:Saturday, April 26, 2014, 12:00 PM (1200) UTC
Description: Backbone MINN-SEAT will unavailable while Vendor Zayo Engineers perform a hardware upgrade in Sprague, WA. An outage of 1 hour is expected; however, the entire maintenance window has been reserved. Backbone traffic should re-route during this maintenance. Workgroup administrators will receive notifications from OESS regarding circuits re- routed on the backbone.

Ticket No.:1536:135
Subject:Maintenance 2 of 2 - I2 AL2S Backbone MINN-SEAT
Affected:Backbone MINN-SEAT
Start Time:Sunday, April 27, 2014, 7:01 AM (0701) UTC
End Time:Sunday, April 27, 2014, 12:00 PM (1200) UTC
Description: Backbone MINN-SEAT will unavailable while Vendor Zayo Engineers perform a hardware upgrade in Sprague, WA. An outage of 1 hour is expected; however, the entire maintenance window has been reserved. Backbone traffic should re-route during this maintenance. Workgroup administrators will receive notifications from OESS regarding circuits re- routed on the backbone.