Due to the increase in traffic and to provide you with optimal performance, we will install an additional linecard on our core-router and then reboot the router. The network will be unreachable for a few minutes, but it should be the last upgrade required for the next couple of months.
A causa del volume di traffico aumentato e per garantirVi ottime prestazioni, questa notte a partire da mezzanotte provvederemo ad installare una linecard aggiuntiva sul core-router e poi a riavviare questo. Durante il riavvio la rete sara’ irraggiungibile per un paio di minuti, ma e’ l’ultimo aggiornamento pianificato per il sistema di routing nei prossimi mesi.
Wegen des gestiegenen Traffic-Aufkommens und um optimale Leistung sicherzustellen, werden wir diese Nacht eine zusätzliche Linecard in unseren Routing-Systemen einbauen; anschließend muss der Core-Router neu gestartet werden, was zu einem Downtime von einigen Minuten führen wird. Anschließend sind aber für einige Monate keine weiteren Upgrades geplant oder notwendig.
UPDATE: The upgrade was performed without problems, but the router crashed at 12:03 CET today due to Cisco bug CSCsc53393. We have to switch to another IOS-Version this night with another downtime of about 170 seconds. This is an emergency measure and cannot be delayed.
UPDATE2: Another IOS-Version has been installed and the router rebooted two times after 1:00 o’clock during the night.
UPDATE3: The router crashed again today, the 25th of November 2006 at 13:49 CET and the total outage was an one hour and ten minutes, but we were finally able to find the root-cause of the problem: a memory-stick in the Cisco Catalyst 12016 GSR was defect. We have removed the defect module and will receive a replacement within a few days (no common RAM modules can be mounted in the router). In the meantime the router is working with half the memory as normal, but seems to be stable. Again, we apologize for the inconveniences.
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