this is a windows PC running cygwin. but regardless of that, what you
mean by:
"DHCP will grab your IP address and register an record in DNS
for your hostname"?
what component will register a hostname in DNS? DHCP?/DNS?/NETBIOS?
not sure I'll get an answer from IT admin, but may try it later.
thanks!
regards
ping
On 7/5/2012 9:32 PM, Jeremiah Bess wrote:
I'm not sure why you are posting outputs of a Windows ipconfig.
Normally, DHCP will grab your IP address and register an record in DNS
for your hostname.
Some VPN tunnels are configured to not allow local network connections
simultaneously. This question is probably best answered by your network
admins.
Jeremiah Bess
Penguin Geek, Network Ninja, Father of Five
On Jul 5, 2012 3:09 PM, "ping" <[email protected]
<mailto:[email protected]>> wrote:
guys/experts:
this sometimes confuse me...
say I have a PC named "ping-new-laptop", I connected to my company
wireless ,through DHCP I got an IP address
Wireless LAN adapter Wireless Network Connection:
Connection-specific DNS Suffix . : abc.net <http://abc.net>
Description . . . . . . . . . . . : Broadcom 4313GN 802.11b/g/n
1x1 Wi-Fi Adapter
Physical Address. . . . . . . . . : 7C-E9-D3-08-DD-F0
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . :
fe80::7d29:2056:c479:6d36%11(__Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.10.144(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.252.0
Lease Obtained. . . . . . . . . . : Thursday, July 05, 2012
3:30:18 PM
Lease Expires . . . . . . . . . . : Friday, July 06, 2012 3:37:55 AM
Default Gateway . . . . . . . . . :
DHCP Server . . . . . . . . . . . : 192.168.8.5
DHCPv6 IAID . . . . . . . . . . . : 249877821
DHCPv6 Client DUID. . . . . . . . :
00-01-00-01-16-EA-C4-2D-B4-99-__BA-F6-22-C8
DNS Servers . . . . . . . . . . . : 8.8.8.8
8.8.4.4
NetBIOS over Tcpip. . . . . . . . : Enabled
on top of it I connect into VPN and got another IP:
Ethernet adapter Local Area Connection* 12:
Connection-specific DNS Suffix . : abc.net <http://abc.net>
Description . . . . . . . . . . . : abc Network Connect Virtual
Adapter
Physical Address. . . . . . . . . : 00-FF-B0-4B-B5-07
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . :
fe80::3daf:d50b:edcb:3903%20(__Preferred)
IPv4 Address. . . . . . . . . . . : 172.28.130.42(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Lease Obtained. . . . . . . . . . : Thursday, July 05, 2012
3:32:37 PM
Lease Expires . . . . . . . . . . : Thursday, July 12, 2012
3:32:40 PM
Default Gateway . . . . . . . . . : 0.0.0.0
DHCP Server . . . . . . . . . . . : 172.28.128.1
DHCPv6 IAID . . . . . . . . . . . : 503381872
DHCPv6 Client DUID. . . . . . . . :
00-01-00-01-16-EA-C4-2D-B4-99-__BA-F6-22-C8
DNS Servers . . . . . . . . . . . : 172.28.144.15
172.24.245.15
Primary WINS Server . . . . . . . : 172.28.144.10
NetBIOS over Tcpip. . . . . . . . : Enabled
that way I'm online ,working, without any issue.
//my hostname
[ping@ping-new-laptop ~]$ hostname
ping-new-laptop
//I can ping my name from local, resolved to my IP
[ping@ping-new-laptop ~]$ ping ping-new-laptop
PING ping-new-laptop (172.28.130.42): 56 data bytes
64 bytes from 172.28.130.42 <http://172.28.130.42>: icmp_seq=0
ttl=128 time=1 ms
//but this doesn't resolve
anotherPC$ ping ping-new-laptop
ping: unknown host ping-new-laptop
----ping-new-laptop PING Statistics----
1 packets transmitted, 1 packets received, 0.0% packet loss
round-trip (ms) min/avg/max/med = 1/1/1/1
now the annoying part is, since both IP addresses are assigned
dynamically and varies everytime, if I want to connect into from
another PC, I have to know what's the IP addresses I need to connect
to. if for some reason there is short transient issue that make it
disconnected and got a new IP, I have no idea what it is and in the
worst case if I have to connect in, I need to drive miles and go to
the office... and for SSH, this will add a new entry to my
known_hosts file everytime the IP changes. which is not a big deal
though.
if there anyway that I can just announce my hostname into the
network, so I can simply use my hostname or any other fix name to
represent my laptop in the network, so I don't need to worry about
the IP?
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