Maria Kihl och Jens A Andersson Kapitel 12: Nätdrift
Figur 12.1: Ett exempel på hur ping fungerar D:\WINNT> ping ping.lu.se Pinging lundns.lu.se [ ] with 32 bytes of data: Reply from : bytes=32 time=20ms TTL=240 Ping statistics for : Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximative round trip times in milliseconds: Minimum = 20ms, Maximum = 20ms, Average = 20ms D:\WINNT>
Figur 12.2: Ett exempel på hur traceroute fungerar D:\WINNT> tracert ping.lu.se Tracing route to lunds.lu.se [ ] over a maximum of 30 hops: 1<10ms 10ms <10ms barbafarfar.barbanet.local [ ] 2<10ms 10ms <10ms gw-n1fls302o1100.telia.com [ ] 3 10ms 10ms 10ms ms 10ms 10ms ms 10ms 10ms m-b-c1-link.se.telia.net [ ] 6 10ms 10ms 50ms m-b-d1-link.se.telia.net [ ] 7 10ms 10ms 10ms malmo4-ge2.sunet.se [ ] 8 20ms 60ms * lu2-SRP1.sunet.se [ ] 9 20ms 30ms 20ms fys-gw.xbb.ldc.lu.se [ ] 10 20ms 20ms 30ms hermes.net.lu.se [ ] Trace complete. D:\WINNT>
Figur 12.3: Ett exempel på hur Nslookup fungerar D:\WINNT>nslookup ping.lu.se Server: barbafarfar.barbanet.local Address: Non-authoritative answer: Name: lundns.lu.se Address: Aliases: ping.lu.se D:\WINNT>nslookup Server: barbafarfar.barbanet.local Address: Name: hermes.net.lu.se Address: D:\WINNT>
Figur 12.4: En switch med VLAN-programvara Switch med VLAN-programvara VLAN 1 VLAN 2 VLAN 3