Cisco Catalyst 6500 Image captured on Cisco.com |
從型號來看, 就可以猜到交換能力可達到 2 Tera bits per second 的水準(事實上是 2040 Gbps, 也就是 2.04 Tbps). 如過再用 VSS (Virtual Switching System) 將兩部 Catalyst 6500 合併成一套來用, 整體交換能力可以達到 4 Tbps 的水準.
Cisco Catalyst 6500 Image captured on Cisco.com |
Nagoya TV Tower |
Egyptian Internet providers returned to the Internet at 09:29:31 UTC (11:29am Cairo time). Websites such as the Egyptian Stock Exchange, Commercial International Bank of Egypt, MCDR, and the US Embassy in Cairo, are once again reachable.
Update (13:36 UTC): We confirm that Facebook and Twitter are up and available inside Egypt, at least from the places we can monitor. No traffic blocks are in place, DNS answers are clean, IP addresses match, no funny business. For now.
... Therefore, I have a list of a few things that should not appear in a clean network:
1. Configuration not saved
2. Router interface down
3. Switch Trunk interface down
4. HSRP/VRRP/GLBP group with only one router