How to route traffic across subnets when one NIC is a hyper-V virtual switch?

Having a bit of a problem with a hyper-V environment which does not seem to route network traffic on two different subnets between each other.
If it were a purely physical server with two NICs and a gateway set traffic would automatically be forwarded between the two different subnets.
However when one of those NICs is a hyper-V virtual switch this simple routing no-longer seems to work and no traffic gets forwarded between subnets?
Situation is:
Hyper-V server with two NICs
NIC 1 = 192.168.0/24 - main Internal company network.
NIC 2 (hyper-V virtual switch.) = 192.168.1/24 - connects to ADSL internet router
Virtualized Domain Controller.
One or two virtualiszed NICs as necessary
How then does traffic get routed between these two subnets? If RRAS has to be configured to do this where is the best place to do it, on the hyper-V host or on the virtualized domain controller?
Thanks,

Hi ,
You can create an internal virtual switch and configure an IP for it (I assume it is 192.168.1.2/24) .
After you enable RRAS in hyper-v host there will be two gateways for different subnets .
" NIC 2 (hyper-V virtual switch.) = 192.168.1/24 - connects to ADSL internet router "
The problem is here ,if these VMs need to access internet .
So , these VMs can not configure their gateway same as the IP of internal virtual switch , you may set VM's gateway as the ADSL internet router's IP meanwhile add a static route entry for every VM .
Please refer to the Syntax :
route add -p 192.168.0.0 mask 255.255.255.0 192.168.1.2
Hope this helps
Best Regards
Elton Ji
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.

Similar Messages

Routing of Network Traffic Between VLANs on a Hyper-V Virtual Switch

I am trying to discover how network traffic generated by reads and writes to RDVH User Profile Disks is routed through my network. I have a pool of Hyper-V
desktop vm’s in their own VLAN (vlan1) with their own NIC bound to a Hyper-V Virtual Switch. On the same server I have another management NIC for the OS on a different VLAN (vlan2) and finally on another server I have a virtual machine which hosts the User
Profile Disks. The VM that hosts the User Profile Disks is on the same VLAN as the management NIC for the OS (vlan2).
When tracing the flow of network traffic to and from the User Profile Disk VM it all comes through the vlan2 NIC on the server where the virtual
desktop VMs reside and nothing comes through the vlan1 NIC on this server. I would have expected the traffic to the virtual desktop VMs to come in through the desktop VMs VLAN NIC (vlan1).
This leads me to two possibilities as to how the desktop vm’s on vlan1 get their data to and from the User Pofile Disk vm on vlan2 without routing.
The desktop vm’s Hyper-V Virtual Switch automatically routes the User Profile Disk traffic from vlan1 to vlan2 internally using a virtual switch learning algorithm
Hyper-V itself handles all reads and writes to the User Profile Disks and since that is using the management NIC for the OS it is already on vlan2 and so the network traffic never leaves vlan2.
Any comments on the reason for traffic taking the path it does (as outlined above) as opposed to being layer-3 routed from VLAN1 to VLAN2?

Thanks for your reply Brian. I think your last paragraph above is what I have set up:
If you simply forward one VLAN to one physical NIC and the VMS on the corresponding External Virtual Switch simply end up on that VLAN without Hyper-V doing anything at all - but this dedicats one physical NIC per VLAN.
The Virtual Machines NIC that the vSwitch is patched to and the NIC for the OS are on different VLANS (both NICs are plugged into un-tagged ports on my switch).
The vNICs on the VM's are not tagged to a VLAN (The VLAN ID\ 'Enable virtual LAN identification' box is unticked)
My vSwitch is set up as connected to 'External Network' and isnt shared with the management network.
What I am trying to get at is how would network traffic on the VLAN my vm's are on get to the VLAN that the NIC for the OS is on without going through the router (even though a routable path is available) ?
Is it possible the 'learning algorithm' referneced in a Technet article below is involved here (sorry I cant post links)?
For the virtual machine to communicate with the management operating system, there are two options. One option is to route the network packet through the physical network adapter and out to the physical network, which then returns the packet back to
the server running Hyper-V using the second physical network adapter. Another option is to route the network packet through the virtual network, which is more efficient. The option selected is determined by the virtual network. The virtual network includes
a learning algorithm, which determines the most efficient port to direct traffic to and will send the network packet to that port. Until that determination is made by the virtual network, network packets are sent out to all virtual ports.
Thanks,
Andrew

Hyper-V virtual switch connecting to different wireless router than mine, and stops the Hyper-V session from working

hi,
I have hyper v running on windows 8.1 pro laptop and have 2 virtual switches configured. the ethernet connection works great all the time.
The wireless has problems with wireless networks. half pics up my home network as i want and the other half picks up a wireless network in range which is not mine.
How do i fix this, as when this happens i cannot use the virtual machine to connect to the network or the internet
My home wireless network is the KamelsHome which you see is connected thus the laptop works. But as you can see the VEthernet (Wireless) is picking up a NETGEAR88.
Screenshot attached
Anyone help please??

Hi Dominic,
Would you pleaes let me know if you have removed the wireless profile and then to see if the issue persists?
How to Delete or Forget Wireless Network Profiles in Windows 8.1
http://www.7tutorials.com/how-delete-forget-wireless-network-profiles-windows-81
Have a nice day!
Regards,
Steven Song
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.

How to get the maximum bandwidth/MaxSpeed/Capacity of a Hyper-V virtual-switch?

We are trying to monitor Hyper-V environment (Windows 2008 R2 and Windows 2012) using WMI, and have a very specific question Hyper-V virtual-switch.
We have referred the below mentioned classes and their properties.
1. Win32_NetworkAdapter (namespace:root\cimv2, property:Speed)
2. Msvm_InternalEthernetPort (namespace:Root\virtualization\v2, property: Speed and Maxspeed)
3. Msvm_EthernetSwitchBandwidthData (namespace:Root\virtualization\v2, property:Capacity and Reservation)
All of the above classes and their properties returns 10000000000 (10 GBps) as MaxSpeed, which is NOT correct (as we know that our network connection is of 1 GBps)
Here is our question: How to get the maximum bandwidth/MaxSpeed/Capacity of a Hyper-V virtual-switch?

Until MSFT makes a change to increase the max speed of the virtual switch (and the resulting virtual ports) it will be 10 Gbps.
It has been this way since the original introduction in 2008.
What you are looking for is the most limiting segment in the path. The virtual switch does not assume the properties of the most limiting segment. Since the physical side could be a team, it could be a single NIC.
Your management layer must interpret the most limiting segment.
If you have not already been here:
http://blogs.msdn.com/b/tvoellm/archive/2009/04/23/monitoring-hyper-v-performance.aspx Then take a look.
Brian Ehlert
http://ITProctology.blogspot.com
Learn. Apply. Repeat.

1 server, 2 networks how to route traffic to both

Hi i have NW65SP7
what i'm trying to do is
1. to have users come in thru the data network (192.168.0.0) and the traffic
go back out thru the default gateway (192.168.0.1) and
2. i want LDAP traffic to go in thru the other network (10.1.0.0) and
backout thru the same networks gateway (10.1.0.1).
1. works fine and all seems to go up and down the right network, however 2.
comes down 10.1.0.0 and backout thru the default gateway on 192.168.0.1. I
don't\can't have this as the firewall rejects the packet as the source and
destination networks are different ie. the fw sees the packet come in thru
10.1.0.0 but when the server sends it back out thru 192.168.0.0 the firewall
rightly drops it
How do i get 2. to work as i want, can this even be done on NW.
What i've done so far is
a. enabled Static Routing
b. created a default route (192.168.0.1) with a metric of 2
c. created a network route for 10.1.0.0 (10.1.0.1) with a metric of 1

"Thorsten Kampe" <[email protected]> wrote in message
news:[email protected]...
>* Steven Lim (Mon, 08 Dec 2008 01:57:27 GMT)>
>> ok i'll try again but i thought that i did expalin it so i'm not sure how
>> my
>> second attempt will go ;)
>
> Is the NetWare server the router? Which addresses do the server's
> interfaces have? Which default gateway do the hosts in the network have?
> Any static routes?
No the netware server is not the router
The server has 1 interface but two vlans trunked to the one interface, each
vlan has a separate IP. I can ping each IP on each of the trunked vlans
fine. I'm using Broadcom Q57 NICS and the QASP\BASP advanced driver to
support the trunked vlans. Don't let that confuse the issue though..it's
basically the same as having two nic interfaces connected to two seperate
networks in this case lets say 192.168.0.10 and 10.0.0.10
Just so we're on the same page, we have a very large routed network with
over 250 subnetworks with 4 10G interconnected core routers each with a 10G
distribution routers, buildings\user\server networks hang of the
distribution routers . Client machines are distributed accross the network
and are not on the same vlan\subnet as the servers.
A server on 192.168.0.0 will have a default gateway of 192.168.0.1 and
servers on 10.0.0.0 will have a default gateway of 10.0.0.1 there are no
clients machines on these subnets....btw we don't really have a 192.168.0.0
network..i'm just using this as an example.
The NW server has 1 static route configured as the default gateway on
192.168.0.1...and i've been trying to work out how to configure another
static route to make sure that all incoming and outgoing traffic for
10.0.0.0 stays on 10.0.0.0 or whatever else i need to do to get it working
>> i have two networks 192.168.0.0 and 10.0.0.0
>>
>> 1. I want all traffic that originates from 192.168.0.0 to go back thru
>> the
>> 192.168.0.0 gateway on 192.168.0.1 (currently the default gateway
>> configured
>> in inetcfg static routing table).
>
> In case the NetWare server is the router you only have to enable routing
> - the server's default gateway is completely irrelevant for that. Of
> course the hosts in the networks have to have the router as the default
> gateway (or a static route).
Clients are fine, lets say that they are on 192.168.1.0 to 192.168.255.0 and
they have default gateways on their subnets the go thru x.x.x.1 (eg.a
192.168.1.0 machine will have a default gateway of 192.168.1.1 and a
192.168.2.0 machine will have a default gateway of 192.168.2.1 etc)
>> 2. I want all ldap traffic, in my case this will be ldap port 389 and
>> 636,
>> that originates from network 10.0.0.0 to go back thru the gateway
>> 10.0.0.1.
>
> Routing is not (application) protocol specific. You can either route all
> IP packets or none a certain route. Please have a look at the routing
> table of your computer to see what I mean.
Yes i understand that routing is not application\protocol specific
When you say "have a look at the routing table" i assume you mean the
netware server....i've done that using TCPCON..i can see the issue..just not
sure how to get it to do what i want
> Also what you might want is called source routing[1] and this is mostly
> blocked because it opens a huuuuge security hole.
>
>> This is required because the firewall requires that if a response is
> to go
>> out to a client then then it must go out over the same network that it
>> originated from. This is the part that's not currently working. At the
>> moment the query comes in from 10.0.0.0 and the response tries to goes
>> out
>> via the deafult gateway on 192.168.0.1 the firewall blocks the outgoing
>> traffic....basic stuff!!!
>
> I wonder where and how you put that firewall if you have only two
> subnets and one router. Is this Bordermanager on the NetWare server?
See above re. the network...the firewall\s are blades within the core
routers and support virtual firewalls that can be applied to any part of the
distribution\access layer of the network.
Does that make any more sense???
> Thorsten
> [1] http://en.wikipedia.org/wiki/Source_routing

How to create hierarchy across more than one dimesion

Hi experts,
How to create hierarchy on more than one dimension in SSAS.please guide me.
Thanks

Hi ,
This is not Possible without making changes in the cube design .i.e;
Using Join for have to create one dimension with all attributes that you require in dimension .
Lets say you have
Dim1
att1
att2
att3
Dim2
F1
F2
You need Hierarchy as below;
Hier
att1
att3
F2
1. Add one Table in DSV using Join between both the tables.
2.Create Dimension using this newly added table.
3. Create hierarchy
https://www.simple-talk.com/sql/reporting-services/implementing-user-defined-hierarchies-in-sql-server-analysis-services/
Thanks
Please Mark This As Answer or vote for Helpful Post if this helps you to solve your question/problem. http://techequation.com

2 Gateways Sharing One Subnet - How to route traffic in and see each other?

Hello,
First, thanks for your feedback in advance.
I am rolling over from CheckPoint Security Gateways to Fortinet Gateways so I have set up one of each within my datacenter subnet as I wanted to keep the same subnet 192.168.10.0/24 and just roll over from CheckPoint to Fortinet.
My current production datacenter gateway (checkpoint) resides on 192.168.10.1/24 with it's own External IP. 100+ ip-sec vpn tunnels communicate through this gateway and happily talk to several servers on the datacenter side (ex. 192.168.10.20, 192.168.10.22,
etc)
Since I am preparing to roll over from CheckPoint to Fortinet, I've placed the new gateway in the same datacenter at 192.168.10.2/24, with its own external IP. I've also dropped in a test server at 192.168.10.121 with the gateway pointing to the new Checkpoint.
It happily gets out to the internet via the new gateway, 192.168.10.2.
I can get out to the world via each gateway when I am behind my datacenter and I configure the gateways on each server. And, they can all see each other and communicate within the 192.168.10.X network.
However, I cannot go from the a Checkpoint tunnel network (ex: 192.168.50.X) go through the CheckPoint datacenter gateway, 192.168.10.1 (via its tunnel) and hit my Fortinet Test server at 192.168.10.121 (fortinet test server gateway set to 192.168.10.2).
I have the IP statically set in the CheckPoint's DNS server at 192.168.10.20 to 192.168.10.121, but from the 192.168.50.X or any CheckPoint subnet, I can't ping or connect to it.
Vice-versa, I can go from a fortinet subnet (192.168.195.X) and hit my test server 192.168.10.121. However, I cannot go from a Fortinet tunnel network 192.168.195.X, go through my new Fortinet datacenter gateway, 192.168.10.2 (via its tunnel), and
hit any of my CheckPoint-side servers, 192.168.10.20, 192.168.10.22, etc.
Specifically, all of my scanners at the 100+ sites scan and send via an smtp server within my datacenter (192.168.10.56). When I deploy the new gateway, the scanner at the office cannot access this IP address to send the email.
Is there a way to sync two AD/DNS servers within my Datacenter but with different gateways? In theory, I'd like the request to come in from the outside (whether a checkpoint network or the new fortinet) it will look into its respective AD/DNS and
point it to the 192.168.10.56 smtp server.
It does not have to be AD/DNS, but that was the first idea that popped in my head. I am definitely open to the most efficient and stable method as I have to roll over 100 sites.
Thank you again!

Hi Strike First,
One issue is that we have over 100 remote sites that we are converting from CheckPoint to Fortinet. And, we do not have the man power to do a single night cutover as these are offices in remote locations.
I am a little confused on the layout you are proposing:
Set up fortinet as the backend firewall, point all internal gateways to this backend firewall, then have this firewall NAT through the current CheckPoint firewall?
Thank you very much for your guidance.

VRF-Lite on one 6509; How to route traffic from global to VRF.

To anyone that can lead me in the right direction:
I have a 6509 switch with IOS " s3223-adventerprise_wan-mz.122-33.SXJ2.bin" on it. I am running VRF-lite on it and would like to route some subnets from the global route table to the VRF route table. How can I do this and stay on the same physical switch. I am using EIGRP for the global network and route table and static routing within the the VRF. Any suggestions or recommendations? Thanks in advance for your help in this matter...

Hello,
You need to use (Static route) in both directions, One Static in the VRF table points to the Global interface, and another one in the Global point to the VRF interface for the recieved traffic. After that, you Can Redistribute the Global Static route into Eigrp for end-to-end connectivity!
Example:
Consider you have 2 interfaces in your Core SW-6509: One is G0/1 and the other is G0/2
G0/1 is placed into the Global table , and G0/2 is part of VRF (X)
interface G0/1
IP address 1.1.1.1 255.255.255.0
inteface G0/2
ip vrf forwarding X
ip address 2.2.2.2 255.255.255.0
Consider Subnet Y.Y.Y.Y in the Global and you want to have it accessible from the VRF!
configure this: (ip route vrf X y.y.y.y y.y.y.y.y G0/1 Global)
Configure also this for the return traffic from the Global table: (ip route 2.2.2.2 z.z.z.z G0/2)
You Can then redistribute the Global static into the Eigrp as below:
router Eigrp 1
no auto summary
redistribute static metric 1.1.1.1.1
HTH
Mohamed

How to map two different subnets to one SSID

Hi Experts ,
we have two offices in same city at different location however we are planning to bring both the office at same location.
Now lets say site A has controller 5508 configured with 24 AP's with 10.10.10.x subnet for internal SSID and Site B which is shifting to Site A campus has different subnet ( 10.10.20.x ) for same SSID.
Site B has no controller since they had connection with H-reap and they were using different subnet for internal SSID ( 10.10.20.x ) .....
Now i need to add their AP's in Site A controller which will be extended wireless LAN however we would like to keep same subnet ( 10.10.20.x ) what Site B has for wireless clients which is really confusing me ....
I have already client subnet for site A with 10.10.10.x /24 subnet and nearly 200 users are already using this wireless client subnet....
How do i add their ( Site B ) subnet / 10.10.20.x with same SSID configured which is globally only one SSID ?
limitations :
I can not create new SSID for site B since same will be broadcasting even in Site A AP's
Is this possible to map one more subnet of site B to existing SSID with already different subnet ( 10.10.10.x ) ?
Your suggestions will be really helpful for me to go ahead and understand in better manner ...

Well first off, you need to bring that subnet over to site a without breaking any routing. Once you do that then sites B subnet will have a different vlan than site A of course. Now with both subnets working in site A, you create a dynamic interface on the WLC for that new subnet. Create an AP group for both sites, you can name it by vlan or by any name you want. Now in the ap group for site A, you define what SSID's you want and map the vlan to that ap groups. Then add sites A AP's to that group. You do this also for site B's AP's and map the SSID to the new subnet you brought over and move the AP's to that group. The APs from site B would have to be setup in local mode not hreap.
Makes sense
Sent from Cisco Technical Support iPhone App

How to update other field values when one field value is updating

I am creating one ADF page.
In one form suppose there are two fields ->
Bank A/C [a combo box or "select one choice"]
Balance [one Input Field]
Now, when I am selecting one value in "select one choice" it will automatically make a query in database and fetch and show the balance in the "Balance" input field.
How can I do that?
Please note that I have done my development by creating entity object>view object.
I have not used any EJB.

Hi,
is it ADF Business Components that your use then or POJOs? In either way, you set the select component's autosubmit property to true.
If using ADF BC you can then create a method entry in the set<attributeName> VORowImpl file of the ViewObject that - whenever a new value is set - looksup the dependent value and sets it - call its set<attribute> method within this method.
Define an ID property on the selectOneChoice component and set the same value to the PartialTrigger property of the textfield that you want to update
Frank

How to route traffic to a static public IP address on my private network

Here is my topology:
ISP Modem ---------------- (gig0/0) Cisco Router (gig0/1) -----------------Cisco Switch--------------------Server
60.70.80.90 172.16.0.1 172.16.0.2 60.70.80.91
Gateway: 60.70.80.89
Netmask: 255.255.255.240
Scenario:
My ISP has given me 5 static IP addresses in which I want to assign one of them to one of my servers that lies within my private network. I am wondering what kind of configurations I would need to be able to access my server from outside my private network using one of the static IP addresses that was given from my ISP. Does this need some sort of static NAT on top of the inside/outside NAT I have done on my router? Thanks
Best Regards,
Sean

Duplicate post.
Go HERE.

How to route traffic between two different interfaces

Hi,
I need to setup a routing between two different interfaces on a host.
Inferface ce1 : 192.168.120.12
Inteface ce2 : 192.168.110.50
Is it possible to add a route which enables the ce2 interface to catch packets from the ce1 interface ?
Regards,
Armin

The problem is a application which is only able to listen on one interface.
To fix this, I have to make all packages visible on one interface.

New Lion......how to open other Safari windows when one is open without closing Safari and starting again?

New Lion. How to open other Safari screens without closing Safari and starting again?

Safari
Apple Support Safari
Lion Mac OS X Communities
Apple Support Lion

How to configure multiple IP-Adresses on one NIC in OVM

Hi guys,
we have some OVM Servers 2.2.1 installed. They all have three NICs in them (eth0-2). For eth0 and eth2 we need multiple IP-Adresses configured to work with our storage solution. The configuration should look like this:
eth0:0 - 192.168.31.x
eth0:1 - 192.168.33.x
eth1 - 192.168.0.x
eth2:0 - 192.168.32.x
eth2:1 - 192.168.34.x
I tried creating gonfig files ifcfg-eth0:0 in /etc/sysconfig/network-scripts with the following content
DEVICE=eth0:0
BOOTPROTO=static
ONBOOT=yes
NETMASK=255.255.255.0
IPADDR=192.168.31.3
TYPE=Ethernet
HWADDR=00:1b:21:06:f0:fa
But it does not work. Neither eth0:0 nore an additional xenbr is configured when i restart.
I can configure multiple ip addresses for xenbr0 by calling something like "ifconfig xenbr0 192.168.31.x". But these settings get lost as sonn as i reboot the server.
I have already searched google, forums and blogs for a solution but could not find one. I thought that this should be a pretty common task. In "normal" linux it is not an issue at all.
Has somebody any experience with a setup like this? I would really apreciate your help.
Thanks
Marek

Hi,
configuring IP aliasses seems to work the same way like configuring VLANs. You will have to configure the appropriate bridges at system startup manually.
E.g. this little script is what I use to configure VLANs and briges on my OVM:
#!/bin/bash
echo "Configuring VLANs and bridges\n"
echo "Configuring VLAN 24 on eth2"
vconfig add eth2 24
brctl addbr br2.24
brctl addif br2.24 eth2.24
ifconfig eth2.24 up
ifconfig br2.24 up
echo "Configuring VLAN 31 on eth2"
vconfig add eth2 31
brctl addbr br2.31
brctl addif br2.31 eth2.31
ifconfig eth2.31 up
ifconfig br2.31 up
This script is run at startup by init using this startup skript in /etc/init.d, which is what I think you're missing as you can already seem to bring up the needed IPs manually - you'd have to change the chkconfig accordingly, that is make sure that the config script gets startet after the network has been brought up, like this: # chkconfig: 2345 11 91
[root@oraclevm01 ~]# cat /etc/init.d/vlan-config
#! /bin/bash
# vlan-config configure VLANs
# chkconfig: 2345 11 89
# description: Configures VLANs at boot time before the \
# network is started.
### BEGIN INIT INFO
# Provides: $vlan
### END INIT INFO
# Source function library.
. /etc/init.d/functions
if [ ! -f /etc/vlan-config ]; then
exit 0
fi
# See how we were called.
case $1 in
     start)
               # configure vlans
               /etc/vlan-config
          echo $"Usage: $0 {start}"
          exit 1
esac
exit 0
Hth,
budy
Edited by: budachst on Jun 29, 2011 8:11 AM

How to configure multiple IP addresses on one NIC?

Hi,
I just installed a OVM Server in version 3.2.1 and the according VMManager. Now i wanted to try to configure the Server/Server Pool. Now i come across a problem, which was already a big problem in OVM 2 while configuring the Networks.
All our OVM Servers have three NICs in them. One is for VMs and Management, the others are for connection to our SAN (Dell PowerVault MD 3220i). My problem is, that due to the network setup, the two NICs for storage need two IP addresses in two different networks each. This shouldn't be a problem, because usually in linux all you have to do is configure something like eth1:1. I remember having huge trouble configuring it in our OVM 2 cluster up to the point where I had to write a shell script to configure the second IP.
Anyways, I have configured two of the storage networks on eth1 and eth2 of the VM Server. Now i cannot configure any more IP addresses, because eth1 and eth2 are not available anymore for configuration in a third network. I really hoped that it would be possible in OVM 3 to configure multiple IP addresses. And probably it is only my lack of knowledge of how to configure it.
So any advice is well appreciated.
Thanks!
Regards,
Marek Hubatka

You should be able to do this by using "VLAN Groups".
http://docs.oracle.com/cd/E35328_01/E35332/E35332.pdf
Check out the VLAN groups section. You must great the VLAN groups before you can assign them to interfaces.

How to route traffic across subnets when one NIC is a hyper-V virtual switch?

Similar Messages

Maybe you are looking for