HH3 Gateway Address Problem

Hi,
I have just had Infinity installed and have an issue with the BT homehub3.
The hub has an IP 192.168.1.254 however when it assigns an IP address to either my desktop or laptop using DHCP it assigns the gateway address as 192.168.1.1 and consequently I can’t get an internet connection. If I set the IP and gateway manually it works fine.
Any ideas as to why it isn’t setting the correct gateway?

Does it work if you set the IP address manually e.g
IP Address          192.168.1.50
Subnet Mask       255.255.255.0
Default Gateway 192.168.1.254
DNS                   192.168.1.254
There is no advantage in using DHCP, unless your computer is used on other networks. Static addressing is quicker and more reliable.
If you need to use DHCP, then make sure the subnet mask is set to 255.255.255.0
There are a couple of DHCP pools within the home hub, one is reserved for the BT Openzone/FON VLAN connection.
There are some useful help pages here, for BT Broadband customers only, on my personal website.
BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

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RSV4000 DHCP Gateway address problem

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Get default gateway address

Dear all
i saw a function in TCP library that can get the host address. but do somebody now how to get the default gateway address ?
e.g
IP 192.168.0.4 ( this ip can obtain by get host address function )
subnet 255.255.255.0
deault gateway 192.168.0.1
B.R
Gerry
Solved!
Go to Solution.

Hey Gerry -
To get the default gateway, you'll want to use the Win32 IP Helper API. Unfortunately, this portion of the Win32 API is only available to users of the Full LabWindows/CVI package.
To retrive IPV4 information about your network adapters, you can use the function GetAdaptersInfo. If you need IPV6 information, you'll need to use GetAdaptersAddresses. I wrote a quick example of using GetAdaptersInfo and attached it, you can see the output below:
Let me know if you have any questions -
NickB
National Instruments
Attachments:
DisplayIPInfo.c ‏3 KB

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The problem I have is, is that although client connections to Ethernet 2 set up pefectly, the connected machines have no connection to the internet: unable to see fqdns or ping IPs directly.
I must be doing something wrong... but can't see it. Hopefully someone else can...
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Here are the outputs: hope they are informative
Server - ifconfig
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
          options=3<RXCSUM,TXCSUM>
          inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
          inet 127.0.0.1 netmask 0xff000000
          inet6 ::1 prefixlen 128
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0<> mtu 1280
en0: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
          options=2b<RXCSUM,TXCSUM,VLAN_HWTAGGING,TSO4>
          ether 00:17:f2:00:8e:06
          inet6 fe80::217:f2ff:fe00:8e06%en0 prefixlen 64 scopeid 0x4
          inet 46.33.146.45 netmask 0xfffffff8 broadcast 46.33.146.47
          inet 46.33.146.46 netmask 0xfffffff8 broadcast 46.33.146.47
          media: autoselect (1000baseT <full-duplex,flow-control>)
          status: active
en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
          options=2b<RXCSUM,TXCSUM,VLAN_HWTAGGING,TSO4>
          ether 00:17:f2:00:8e:07
          inet6 fe80::217:f2ff:fe00:8e07%en1 prefixlen 64 scopeid 0x5
          inet 192.168.2.1 netmask 0xffffff00 broadcast 192.168.2.255
          media: autoselect (100baseTX <full-duplex,flow-control>)
          status: active
en2: flags=8823<UP,BROADCAST,SMART,SIMPLEX,MULTICAST> mtu 1500
          ether 00:19:e3:0a:41:ae
          media: autoselect (<unknown type>)
          status: inactive
fw0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 2030
          lladdr 00:16:cb:ff:fe:6c:6f:f6
          media: autoselect <full-duplex>
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vnic0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
          options=3<RXCSUM,TXCSUM>
          ether 00:1c:42:00:00:08
          inet 10.211.55.2 netmask 0xffffff00 broadcast 10.211.55.255
          media: autoselect
          status: active
vnic1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
          options=3<RXCSUM,TXCSUM>
          ether 00:1c:42:00:00:09
          inet 10.37.129.2 netmask 0xffffff00 broadcast 10.37.129.255
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Server - nslookup
Server:
208.67.220.220
Address:
208.67.220.220#53
Non-authoritative answer:
45.146.33.46.in-addr.arpa
name = www.2gc.org.
Laptop / LAN - ifconfig
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
          options=3<RXCSUM,TXCSUM>
          inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
          inet 127.0.0.1 netmask 0xff000000
          inet6 ::1 prefixlen 128
          inet6 fd77:51b9:835:a2f3:62c5:47ff:fe08:7d12 prefixlen 128
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0<> mtu 1280
en0: flags=8823<UP,BROADCAST,SMART,SIMPLEX,MULTICAST> mtu 1500
          ether 60:c5:47:08:7d:12
          media: autoselect (<unknown type>)
          status: inactive
p2p0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 2304
          ether 02:c5:47:08:7d:12
          media: autoselect
          status: inactive
en2: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
          options=4<VLAN_MTU>
          ether 58:55:ca:22:9a:af
          inet6 fe80::5a55:caff:fe22:9aaf%en2 prefixlen 64 scopeid 0x7
          inet 192.168.2.2 netmask 0xffffff00 broadcast 192.168.2.255
          media: autoselect (100baseTX <full-duplex,flow-control>)
          status: active
Laptop - nslookup
Server:
192.168.2.1
Address:
192.168.2.1#53
45.146.33.46.in-addr.arpa
name = www.2gc.org.

NVGRE Gateway Cluster Problem

Hello
We have following setup:
Management Hyper-V hosts running WAP, SPF and SCVMM 2012 R2 components
Gateway Hyper-V host: single node gateway hyper-v host, configured as a single node cluster to be able to join extra hardware in the future
this Hyper-V host runs 2 Windows Server Gateway VMs,configured as a failover cluster.
The following script is used to deploy these windows server gateway VMs as a high available NVGRE gateway service:
http://www.hyper-v.nu/archives/mscholman/2015/01/hyper-v-nvgre-gateway-toolkit/
two tenant Hyper-V hosts running VMs which are using network virtualization
The setup is completed successfully and when creating a tenant in WAP and creating VM network for this tenant using NAT, the VMs of this tenant are accessible and can access Internet using the HA Gateway cluster.
The Gateway Hyper-V host and NVGRE Gateway VMs are running in a DMZ zone, in a DMZ Active Directory Domain.
Management and Tenant Hyper-V hosts, incl all Management VMs, are running in a dedicated internal Active Directory domain.
Problems start when we failover the Windows Server Gateway service to the other VM node of the NVGRE Gateway cluster. We see in the lookup records on the Gateway Hyper-V host that the MAC address of the gateway record for tenants is updated with the new
MAC address of the VM node running the gateway service.
But in SCVMM, apparently, this record is not updated. The tenant hosts still use the old MAC address of the other Gateway VM node.
When looking in the SCVMM database, we can also see that in the VMNetworkGateway table that the record representing the gateway of the tenant, still points to the MAC address of the PA network adapter of the other node of the NVGRE Gateway cluster, not to the
new node on which the gateway service is running after initiating a failover.
On the tenant hyper-v hosts, the lookup record for the gateway also points to the old node as well.
When manually changing the record in the VMNetworkGateway table to the new MAC address, and refreshing the tenant hosts in SCVMM, all starts working again and the tenant VMs can access the gateway again.
Anybody else facing this issue? Or is running a NVGRE Gateway cluster on a single Hyper-V node not supported?
To be complete, the deployed VMs running the gateway service are not configured as HA VMs.
Regards
Stijn

If i understand your post correctly you have a single Hyper-V Host running 2 GW VM's. I think the problem is that when you deploy a HA VM Gateway Cluster it wants to create a Cluster Resource (PA IP Address) on the Hyper-V host as well. So when you run 2
hyper-v hosts and 2 gw vm's and you move the active role to another host it will move the Provider Address to the other Hyper-V host as well. I believe this is by design. You should ask yourself also the question why running 2 vm's in a cluster on the same
node ;-)
I would recommend to use 2 node Hyper-V Host Cluster (This is needed for the HA PA Address, And not necessary for your GW VM's )
Then run the deployment toolkit again. Now when that's done again, take a close look on how the Active node on the Hyper-V host has the corresponding PA assiogned on that Hyper-V host. Then do a failover, refresh the cluster manager and take notice
of the PA address that has moved along to the other Hyper-V host that is the active one. It is diffuclt to explain, in a couple of sentences but i hope you have the opportunity to build the 2nd Hyper-V host aswell and create a cluste.
Side note: if you want to keep the excising VM Gateway cluster. remove all gateways from VM Networks and remove the Gateway service from VMM. Then provision the second Hyper-V Host, Configure Cluster, Live migrate 1 GW VM node to it. Reconfigure
Shared VHDX for quorum and csv and then add back the network service again. Don't try to leave it as a network service in VMM and move the VM to another node. It will not work when failover.
Best regards, Mark Scholman. Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

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