1. 21-10-0197-001 IEEE 802.21 MEDIA INDEPENDENT HANDOVER Title: An existing use of DNS Date Submitted: Authors or Sources: H Anthony Chan Abstract: Current use of DNS to redirect to a local server is shown. It is open to discussion of whether DNS can be used to resolve the local SFF

2. 21-10-0197-002 DNS “ Black Magic ” Web Client Akamai High-Level DNS Server Akamai Low-Level DNS Server Local DNS Server PCWorld Authoritative DNS Server PCWorld Web Server Akamai Edge Server Root DNS Server Top-Level Domain DNS Server www.pcworld.com http request/response images.pcworld.com CNAME: a1694.g.akamai.net images.pcworld.com a1694.g.akmai.net 2 ip addresses of Akamai Edge Servers 2 ip addresses of Akamai Edge Servers fetch image files Source: http://www.cs.northwestern.edu/~akuzma/

3. 21-10-0197-003 Local name server Root server 21.org? 123.123.123.21 21.org name server xx.21.org low.high.xxx.net xxx.net? 111.111.111.111 high.xxx.net? 222.222.222.23 High level DNS server 111.111.1 11.111 Low level DNS server 222.222.222.23 low.high.xxx.net? 102.102.102.13 Select cluster Select servers within cluster

4. 21-10-0197-004 Thank you