《大中华区产品经理》PPT课件.ppt

1、Solaris 8 IPv6,鄧偉文 大中華區產品經理 昇陽電腦,IPv6 Overview Transitioning to IPv6 Philosophy and requirements Transition tools Scenarios API transition - porting socket applications Solaris 8 Configuration and Use,Outline,Enough address space for new Internet devices! Plug Handles site local addresses IPv4 code

2、IPv6/ IPv4 code int int myconnect( char *host, int port) myconnect( char *host, char *service) struct sockaddr_ in dest; struct addrinfo *res, *aip; int sock, ret; struct addrinfo hints; struct hostent *hp; int error; int s = -1; hp = gethostbyname( host); bzero( ,Minimal Porting of Socket Client,NO

3、T recommended - does not handle site local addr IPv4 code IPv6/ IPv4 code int int myconnect( char *host, int port) myconnect( char *host,int port) struct sockaddr_ in dest; struct sockaddr_in6 dest; int sock, ret; int sock, ret; struct hostent *hp; struct hostent *hp; int errnum; hp = gethostbyname(

4、 host); hp= getipnodebyname( host, AF_ INET6, AI_ DEFAULT, ,Solaris 8 IPv6 Status,Protocol stack plus core applications TCP/ UDP/ IP, NFS, RPC telnet, ftp, r*, sendmail, etc NIS and NIS+ stores IPv6 addresses. Runs over IPv6. DNS stores IPv6 addresses. Does not run over IPv6. Basic transition tools

5、(RFC 1933) Dual-stack with configured and automatic tunnels Future protocol pieces IPsec for IPv6, Mobile IPv6 Future applications JDK, snmpd, apache, iPlanet, etc,Solaris IPv6 API Tools,Code scrubber (string search in source code) See Porting guide See http:/arachnid.eng/inet/ipv6/ migration/index.

6、html Sun internal website (Future) “Library” to allow shrink- wrapped application binaries to use new APIs on old OS releases (Future) shared object to allow “lucky” applications to use IPv6 without a port Intended for “emergencies” - not to discourage porting,Enabling Solaris IPv6,touch /etc/ hostn

7、ame6. le0 (for each interface) Install tool will ask “enable IPv6” question reboot (or re-init networking) ifconfig -a shows IPv6 address Manually put IPv6 addresses in DNS/ NIS/. Some day - secure dynamic DNS update Need public key infrastructure for this BINDv9 has much of what is needed,Enabling

8、Solaris IPv6 Router,Cisco router is very similar In addition to the host/server steps Create /etc/inet/ndpd. conf containing subnet prefixes prior to rebooting Neighbor Discovery (in. ndpd) will tell the hosts their subnet address prefixes RIPng routing protocol (in.ripngd) is run automatically,Samp

9、le router ndpd. conf,# Send router advertisements out all NICs ifdefault AdvSendAdvertisements on # Advertise a global prefix and a # site local prefix on three interfaces. # 0 x9255 = 192.146.85 prefix 2: 0: 0: 9255: 0/64 hme0 prefix fec0: 0: 0: 9255: 0/64 hme0 # 0 x9256 = 192.146.86 prefix 2: 0: 0

10、: 9256: 0/64 hme1 prefix fec0: 0: 0: 9256: 0/64 hme1 # 0 x9259 = 192.146.89 prefix 2: 0: 0: 9259: 0/64 hme2 prefix fec0: 0: 0: 9259: 0/64 hme2,Configuring a Tunnel,Tunnel IPv6 in IPv4 for transition purposes between two (Solaris) routers In /etc/ hostname6. ip. tun0 on 0: tsrc 129.145.45

11、.30 tdst 5 up addif 3ff2:8191:2d1e 3ff2:8192: 1e2d up Plus inverse configured on 5,Diagnostics,ifconfig -a shows all interfaces ifconfig -a4/ ifconfig -a6 shows subset netstat shows all netstat -f inet/ netstat -f inet6 to see one of them netstat -sa shows per interface IPv6/

12、 ICMPv6 counters /etc/ default/ inet_ type can force ifconfig and netstat to only display IPv4 compatible output snoop ip6 shows all IPv6 packets ping -a will try all addresses (IPv6 and IPv4) traceroute -a will try all addresses,Daemons,/usr/ lib/ inet/ in. ndpd performs part of the Neighbor Discov

13、ery protocol On router used to send Router Advertisements as specified in /etc/ inet/ ndpd. conf On host receives Router Advertisements and configures IPv6 addresses, subnet prefixes, etc (no ndpd. conf is needed on a host) “ARP” and redirect functionality is in the kernel /usr/ lib/ inet/ in. ripng

14、d runs the IPv6 version of RIP (IPv4 run by in. routed) Automatically enabled on a Solaris router (if /etc/ inet/ndpd. conf exists),Bonus IPv4 Improvements,Ability to configure multiple IPv4 addresses per interface using a single /etc/hostname. file using the new “addif” ifconfig option. For example

15、 in /etc/hostname. le0: set netmask + broadcast + up addif netmask + broadcast + up addif netmask + broadcast + up . addif 54 netmask + broadcast + up Creates le0, le0: 1,. le0: N logical interfaces,For More Information,IPv6 industry page The 6bone - a global IPv6 test

16、 network /6bone Standardization work IPv6 Forum Grassroots efforts ,Conclusions,Solaris 8 is the platform to use for porting applications to IPv6 and testing them Time to encourage the ISVs to port Solaris 8 contains enough IPv6 functionality to b