Survivability can be addressed in many layers in a network and protection can be performed at the physical layer (SONET/SDH, Optical Transport Network), Layer 2 (Ethernet, MPLS) and Layer 3 (IP).
United States Environmental Protection Agency | Patient Protection and Affordable Care Act | Link Wray | Protection from Harassment Act 1997 | U.S. Customs and Border Protection | Australian Customs and Border Protection Service | Special Protection Area | Hopf link | Firearm Owners Protection Act | World Society for the Protection of Animals | Royal Society for the Protection of Birds | Pension Protection Act of 2006 | Link Byfield | Weakest Link | Protection racket | New Jersey Department of Environmental Protection | Link Wray (album) | link | Kelly Link | Goethe Link Observatory | Dynamic-link library | Driver's Privacy Protection Act | D-Link | Digital Transmission Content Protection | Data Protection Act 1998 | Court of Protection | California Department of Forestry and Fire Protection | Witless Protection | United Nations Protection Force | Train Protection & Warning System |