Teaming servers to multiple switches

I am looking for a configuration guide / example that shows how to connect a Server with multiple NIC's to 2 different switches for failover. The servers could be Window's or Unix based. Thank you.

Actually, on the 3750s if stacked at least, I believe this is now possible to channel those ports.
I'm not sure if that carries over to the 2970s or not.
The "other company" called this "Split Multi Link Trunking". I'm not sure if Cisco calls it Split Etherchannel or not, but I'm 99% sure that that was one of the benefits of the stacked 3750s for uplinks, and there's no reason that it wouldn't apply to servers too, so long as they are capable of etherchannels.
...N

Similar Messages

NIC Teaming/Bonding with multiple switches.

Today I started setting up in my lab a network with redundant Cisco 2970 switches. The hosts are two HP DL145 servers with two broadcom GBe NICs. The systems are running Linux 2.6.15.1 and I have enabled bonding in the kernel as a module.
Each NIC is plugged into a different switch, and the switches are NOT connected together using ISL or any other method. For all intents they operate as single switches. Each switch is in turn connected to a switch on which my gateway is located.
I have the configuration working using mode 0 (balance-rr). Using tcpdump on the underlying slave interfaces, I can see that packets are in fact being sent out over both interfaces, and that odd sequence numbers are sent on if0 and even numbers are sent on if1. If I unplug one of the interfaces, the bonding driver marks it as down, and stops sending data on that interface. When plugged back in, data transmission is resumed. Furthermore, when using the bonding driver's arp monitoring of the default gateway, unplugging a switch from the upstream switch causes the interface connected to that switch to fail.
My question is if this is a "supported" configuration and/or if there is a better way to make this work.
Furthermore, my next test is to add a PIX 515UR to the mix, and figure out how to connect IT to both switches.
I cannot find any information about how to bond or team interfaces on the PIX, can it do something like this?

Today I started setting up in my lab a network with redundant Cisco 2970 switches. The hosts are two HP DL145 servers with two broadcom GBe NICs. The systems are running Linux 2.6.15.1 and I have enabled bonding in the kernel as a module.
Each NIC is plugged into a different switch, and the switches are NOT connected together using ISL or any other method. For all intents they operate as single switches. Each switch is in turn connected to a switch on which my gateway is located.
I have the configuration working using mode 0 (balance-rr). Using tcpdump on the underlying slave interfaces, I can see that packets are in fact being sent out over both interfaces, and that odd sequence numbers are sent on if0 and even numbers are sent on if1. If I unplug one of the interfaces, the bonding driver marks it as down, and stops sending data on that interface. When plugged back in, data transmission is resumed. Furthermore, when using the bonding driver's arp monitoring of the default gateway, unplugging a switch from the upstream switch causes the interface connected to that switch to fail.
My question is if this is a "supported" configuration and/or if there is a better way to make this work.
Furthermore, my next test is to add a PIX 515UR to the mix, and figure out how to connect IT to both switches.
I cannot find any information about how to bond or team interfaces on the PIX, can it do something like this?

Creating multiple vlans across multiple switches

Hi All,
How should I create multiple vlans across multiple switches?
For instance, I have two (primary/redudant) layer 3 (core) switches and four layer 2 access switches (Cisco 2960) for the hosts, and given these are the vlans/subnets to be created. Should I do it in the core switches only and it would just propagate through the access via VTP? Just trying to practice and learn.. Any help will be greatly appreciated:)
VLAN 100: [DHCP-workstations]
172.26.4.0/24
172.26.5.0/24
VLAN 200: [Servers]
172.16.1.0/24
172.16.2.0/24
VLAN 300: [Printers]
192.168.129.0/24
192.168.130.0/24
VLAN 800: [Management for switches/routers]
10.160.1.0/24

Hi
You will have the SVI on the core. Set a VTP domain, make one of the cores as VTP server and rest of the switches as VTP clients. Once you do this, you won't have to login into each switch and create a vlan locally. The vlans will be automatically advertised from the VTP server to all the VTP clients.
Thanks
Ankur
"Please rate the post if found useful"

Team servers connected to a css11501S

I have 2 CSS11501S connected to an stateful active/standby pair on port e8. And servers with one nic in each CSS. So CSS01 e1 has NIC1 of serverA and CSS02 e1 has NIC2 of serverA. I had some issues where the VIPs would not work because VRRP wouldnt work (each CSS couldnt see eachother) I resolved that by making e7 a trunk and got the VRRP working in a active standby(stateful) setup between the CSS. PRoblem is now that the Teamed servers crap out when more than one nic is turned on. If i put on both nics then they dont work they just die. If i turn off a nic then it works. I'm a bit confused since the trunk should be able to allow the nics to communicate with eachother.
Any insight would be helpful

ahh found the answer.. seems that the content switch behaves a bit erratically with an active/active teaming. When they are on active/standby there are no issues.

NIC teaming and Hyper-V switch recommendations in a cluster

HI,
We’ve recently purchased four HP Gen 8 servers with a total of ten NICS to be used in a Hyper-V 2012 R2 Cluster
These will be connecting to ISCSI storage so I’ll use two of the NICs for the ISCSI storage connection.
I’m then deciding between to options.
1. Create one NIC team, one Extensible switch and create VNics for Management, Live Migration and CSV\Cluster - QOS to manage all this traffic. Then connect my VMs to the same switch.
2. Create two NIC teams, four adapters in each. Use one team just for Management, Live Migration and CSV\Cluster VNics - QOS to manage all this traffic.
Then the other team will be dedicated just for my VMs.
Is there any benefit to isolating the VMs on their own switch?
Would having two teams allow more flexibility with the teaming
configurations I could use, such as using Switch Independent\Hyper-V Port mode for the VM team? (I do need to read up on the teaming modes a little more)
Thanks,

I’m not teaming the ISCSI adapters. These would be configured with MPIO.
What I want to know,
Create one NIC team, one Extensible switch and create VNics for Management, Live Migration and CSV\Cluster - QOS to manage all this traffic. Then connect
my VMs to the same switch.
http://blogs.technet.com/b/cedward/archive/2014/02/22/hyper-v-2012-r2-network-architectures-series-part-3-of-7-converged-networks-managed-by-scvmm-and-powershell.aspx
What are the disadvantages to having this configuration?
Should RSS be disabled on the NICs in this configuration with DVMQ left enabled?
After reading through this post, I think I’ll need to do this.
However, I’d like to understand this a little more.
I have the option of adding an additional two 10GB NICS.
This would mean I could create another team and Hyper-V switch on top and then dedicate this to my VMs leaving the other team for CSV\Management and Live Migration.
How does this option affect the use of RSS and DVMQ?

Using NIC Teaming and a virtual switch for Windows Server 2012 host networking and Hyper-V.

Using NIC Teaming and a virtual switch for Windows Server 2012 host networking!
http://www.youtube.com/watch?v=8mOuoIWzmdE
Hi thanks for reading. Now I may well have my terminology incorrect here so I will try to explain as best I can and apologies from the start.
It’s a bit of both Hyper-v and Server 2012R2.
I am setting up a lab with Server 2012 R2. I have several physical network cards that I have teamed called “HostSwitchTeam” from those I have made several Virtual Network Adaptors such as below
examples.
New-VMSwitch "MgmtSwitch" -MinimumBandwidthMode weight -NetAdaptername "HostSwitchTeam" -AllowManagement $false
Add-VMNetworkAdapter -ManagementOS -Name "Vswitch" -SwitchName "MgmtSwitch"
Add-VMNetworkAdapter -ManagementOS -Name "Cluster" -SwitchName "MgmtSwitch"
When I install Hyper-V and it comes to adding a virtual switch during installation it only shows the individual physical network cards and the
HostSwitchTeam for selection. When installed it shows the Microsoft Network Multiplexor Driver as the only option.
Is this correct or how does one use the Vswitch made above and incorporate into the Hyper-V so a weight can be put against it.
Still trying to get my head around Vswitches,VMNetworkadapters etc so somewhat confused as to the way forward at this time so I may have missed the plot altogether!
Any help would be much appreciated.
Paul
Paul Edwards

Hi P.J.E,
>>I have teams so a bit confused as to the adapter bindings and if the teams need to be added or just the vEthernet Nics?.
Nic 1,2
HostVMSwitchTeam
Nic 3,4,5
HostMgmtSwitchTeam
>>The adapter Binding settings are:
HostMgmtSwitchTeam
V-Curric
Nic 3
Nic 4
Nic 5
V-Livemigration
HostVMSwitch
Nic 1
Nic 2
V-iSCSI
V-HeartBeat
Based on my understanding of the description , "HostMgmtSwitchTeam and
HostVMSwitch " are teamed NIC .
You can think of them as two physical NICs (do not use NIC 1,2,3,4,5 any more , there are just two NICs "HostMgmtSwitchTeam and
HostVMSwitch").
V-Curric,
V-Livemigration , V-iSCSI ,
V-HeartBeat are just VNICs of host (you can change their name then check if the virtual switch name will be changed )
Best Regards
Elton Ji
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Handshaking DMM with multiple Switch devices - DAQmx error

Hi.
I'm trying to create a handshaking loop with DMM (PXI-4071), SWITCH (PXI-2569) and MUX (PXI-2575). All three instruments are in segment 2 of PXI-1045 chassis (slots 8, 9 and 10) and I am using PXI trigger lanes to route triggers.
I followed the NI article 'Multi-module Scanning with National Instruments Switches' - I modified the NI SWITCH example 'niSwitchDMMSwitchHandshaking' to configure the other SWITCH but when I tried to run the example, I got an error:
0xbffa6b9a - No registered lines could be found between the device in the route. (pop-up screenshot is in the attachment). It is the niSwitch_InitiateScan function for the second Switch that returned the error.
Changing PIX trigger lanes has no effect.
I tried both CVI and LabVIEW examples with the same result.
I even tried to use two 2575 MUXes - same result.
Can anybody tell me what am I doing wrong?
Solved!
Go to Solution.
Attachments:
errror1.JPG ‏26 KB

Hi Pavel,
For the purposes of this post, I'll define
the measurement complete signal (sent by the DMM to the switch modules
after each measurement) as 'MC' and place it on TTL0.
For the
purposes of this post, I'll define the scan advanced signal (sent by the
switch module(s) to the DMM once the relays have settled) as 'SA' and place
it on TTL1.
You mentioned you're using NI-Switch, which is NI's IVI
compliant switch API. Since the IVI Foundation regulates the behavior
of IVI compliant software, we must adhere to their rules when
implementing our API. Unfortunately, the IVI switch standard doesn't
provide a method to control arbiting of triggers between multiple switch modules
simultaneously.
Let's
look at what happens when we setup a system with multiple switch
modules handshaking with a single DMM. The DMM is going to take a
measurement and then send MC on TTL0. Meanwhile, each switch is listening to TTL0,
waiting for the MC pulse. When the MC pulse is received, each switch sets
the relays according to its next scan list entry, waits for debounce,
and then sends SA on TTL1. The problem we run into here is that depending on the switch module, number of relays connected simultaneously, jitter, etc, it's possible that one module will send the SA trigger on TTL1 before the other. Since the IVI spec doesn't provide any way to implement a 'master' switch or an arbitor, it's impossible to implement a system such that only the last switch that settles sends a trigger. Therefore, what happens is we get a whole bunch of switch modules sending triggers at slightly different times onto TTL1. If one switch is driving TTL1 high while the others are driving TTL1 lo, it's remotely possible that we could damage the TTL circuitry on the PXI backplane.
To date, NI hasn't seen any failures due to simultaneously driving the TTL lines high and low at the same time with NI switch hardware, but it is theoretically possible that damage could occur. For this reason, NI implemented a change in DAQmx
9.0.0, 9.0.1, and
9.0.2 that prevents a user from setting up handshaking with multiple switch modules while using NI-Switch. What does DAQmx have to do with this, you might ask? A component installed with DAQmx is responsible for verifying the triggers are valid.
Customers with existing NI-Switch multi-module handshaking applications will find that upon upgrading to any of the above three versions of DAQmx, the error you observed will occur. We've evaluated this customer feedback and have decided to revert to the previous functionality in a yet-to-be released version of DAQmx. Please note that NI does not advise driving the same TTL line with multiple sources due to the chance that we'll double-drive the line. Therefore, it goes with out saying that NI does not advise using NI-Switch in multi-module handshaking applications. We do, however, still recommend NI-Switch for Syncrhonous triggering because the switches never send triggers (in synchronous mode, the DMM just waits a predefined amount of time before switching).
Note that if you use the DAQmx Switch API, we're no longer bound to the IVI spec, which means we have an arbitor that ensures only one switch module drives the SA trigger on TTL1. NI highly recommends that customers evaluate using the DAQmx switching API for multi-switch handshaking applications. An example DAQmx handshaking application for the DAQmx Switch API is located in Example Finder»Hardware Input and Output»DAQmx»Switches»Switch Scanning with DMM - Handshaking.vi.
Note that in DAQmx, we'll only have one scan list, regardless of the number of switches we have. Note that the syntax in DAQmx scanning is different than NI-Switch. I'll defer a detailed explanation of the differences to the DAQmx and NI-Switch Help (search for 'scan list'), but in short, we'll need to include the DAQmx Device name prior to each connection. For example, in NI-Switch, if we want to connect CH1 to Com1:
CH1->Com1;
In DAQmx, we'll need to include the Device name:
Dev1\CH1->Com1;
Note that to add additional switch modules in the DAQmx API, we simply
call the Set Topology and Reset VI multiple times:
DAQmx keeps the
session loaded in memory and as I noted above; we define which switch
does the action as part of the scan list entry.
If you'd still like to use NI-Switch, you could roll back to DAQmx 8.9.5 or previous, or if you want to stick with 9.0.x, I highly recommend that we daisy chain the triggers as follows:
DMM Measurement Complete to Advance Trigger on Switch1 via TTL0
Scan Advance from Switch1 to Advance Trigger on Switch2 via TTL1
Scan Advance from Switch2 to Trigger Source on DMM via TTL2
Note that we'll need an additional TTL line for each switch module. Also note that some switch modules allow front panel triggers, which reduces the number of TTL lines we'll need on the backplane, but which requires external wiring between switch modules.
Message Edited by Knights Who Say NI on 06-11-2010 05:25 PM
Message Edited by Knights Who Say NI on 06-11-2010 05:30 PM
Message Edited by Knights Who Say NI on 06-11-2010 05:30 PM
Message Edited by Knights Who Say NI on 06-11-2010 05:31 PM
-John Sullivan
Analog Engineer

Is it possible to deploy SharePoint or its Service Applications on: multiple DB-Servers and multiple SQL Instances?

Hello Forum,
We have a SharePoint 2013 farm (Enterprise edition) that uses one single SQL Server 2012 (Standard edition). That statement means: All my SharePoint DBs e.g. (Config, Admin, Content, and Service Apps) DBs are hosted and running onto one single instance e.g.
Server1\SQLInstance1.
We have some new requirements to install and configure BI tools such as: PerformancePoint services and PowerPivot. BI tools require either SQL Server 2012 Enterprise or BI editions, and we do NOT want to upgrade our current SQL Server1\SQLInstance1
Instead, We have other separate SQL Server instance which is enterprise edition let's name it (ServerX\InstanceX) that is running standalone, and we are thinking or using it, and my 2 questions are:
1) Can we use this other separate
SQL Server instance which is enterprise edition to host the create and hosts the DBs of PerformancePoint services and PowerPivot ?
2) My second question is the same: Can I create PerformancePoint services application in my SharePoint farm, But in the Database Server field, I fill up
the details of the other DB server ServerX\InstanceX which is the one that is SQL
enterprise edition ? Will this work ?
Any official Microsoft resources/links tell that it is possible to deploy SharePoint or its service applications on multiple DB-Servers and multiple SQL Instances?

Thank you Alex and Anil,
What are the ramifications of that?
I mean, Assuming that I have created such a farm where most of SarePoint DBs in Standard SQL instance while the PerformancePoint service application and others e.g. PowerPivot and reporting service are deployed and configured onto other Enterprise SQL instance.
Are there any recommendations or concerns that you would like to draw my attention to ?

Using Ciscoworks to update netmask on mgmt interface for multiple switches

Is it possible to user Ciscoworks LMS 3.2 to update the netmask for a management interface on multiple switches? For example, say I have a 3750 access switch management network, 172.28.185.0/27 (default gateway 172.28.185.1) that we're resizing to a /26. Is there a simple way to update just the netmask for the management interface on those devices using Netconfig?
-David

Unfortunately not. You could use Netconfig or even baseline compliance for this, but since you need to know each interface's IP, that means you'd have to create parameterized templates. Therefore, you would have to create a template "answer" file for each device in this subnet which had their IP address for the interface in question.
Baseline compliance might be a little easier with a template like:
Commandlet : CheckIP
IsPrereq : Yes
Submode : interface [#.*Ethernet.*#]
+ ip address [#172.58.185.\d+#] 255.255.255.224
Commandlet : ReplaceIP
Parent : CheckIP
+ ip address [IP] 255.255.255.192
You would still need to provide a value for [IP] for each device when performing a deployment.

Nic teaming and hyper-v switches

I come from the ESX world but I am slowly falling in love with the simplicity of Hyper-v. I have a stack of dell c2100's I have been experimenting with. each have 2 1gb connections teamed to a cisco switch. when testing bandwidth with a file copy I
get around 240MBps. however if I add a hyper-v switch I max out at 90Mbps. worse than no teaming at all (112Mbps).
team is with integrated broadcom nics, LACP and I can confirm I get full bandwidth between 2 2012 r2 machines until adding a hyper-v switch. removing the switch lets me transfer at full bandwidth but then I cant use Hyper-v guests.
my goal will eventually be to add dual port 10gb cards to 5 of the C2100's and run them in a cluster to host all my VM's in HA. I don't want to waist my money on the switch and nics until I can get what i have working correctly.
HDD speed is also not the issue as each has 12 3tb WD re4 drives with 2 Intel 250GB ssd as cache. they easily hold 3000MBps sustained.

http://itproctology.blogspot.com/2008/05/hyper-v-tcpoffloading-poor-network.html
http://itproctology.blogspot.com/2011/03/tcp-checksum-offload-is-not-equal-to.html
Brian Ehlert
http://ITProctology.blogspot.com
Learn. Apply. Repeat.
Disclaimer: Attempting change is of your own free will.

My SCCM 2007 Secondary Site Servers have multiple "SMS_SiteSystemToSiteServerConnection_ SiteCode " and "SMS_SiteToSiteConnection_ SiteCode " local groups

My organization is going through a SCCM 2012 migration and I was asked about our current SCCM 2007 Secondary Sites and when I remoted into my secondary site servers I saw that two of the three servers have multiple "SMS_SiteSystemToSiteServerConnection_<SiteCode>"
and "SMS_SiteToSiteConnection_<SiteCode>" local groups.
This just seemed quite odd and I wanted to know if anyone has dealt with this before.
Thank you

Thanks for your reply Eswar.
One of the SMS_SiteToSiteConnection_<SiteCode>
groups on two of my Secondary Site servers I believe are configured correctly and they both have my Primary Site Server as a member, but the
SMS_SiteSystemToSiteServerConnection_<SiteCode> group is empty. Is the
SMS_SiteSystemToSiteServerConnection_<SiteCode> group supposed to contain my Primary Site server as well? Both the SMS_SiteSystemToSiteServerConnection_<SiteCode>
and the
SMS_SiteToSiteConnection_<SiteCode> groups on my Primary Site Server have my Secondary Site Servers as members.
Is this correct?
I'm wondering now if the strange groups with the odd site codes that don't even exist were created when the secondary sites were initially being created a while back. From the documentation, it looks like the former admin initially configured the secondary
sites using a PowerShell script created by Kaido Jarvemets. According to some of the notes I have read, the admin kept uninstalling and re-installing the sites when they were not showing up in the SCCM 2007 Admin console, but apparently they simply forgot
to configure a Sender and an Address, if that makes any sense to you.
So, perhaps these groups ending with an odd Secondary Site code may have been a typo during one of the installation attempts? If this is the case, can these groups be deleted?
One thing I forgot to mention was that the Secondary Site servers belong to a Global Security AD group and that group is used to add them to both the SMS_SiteSystemToSiteServerConnection_<SiteCode
and the SMS_SiteToSiteConnection_<SiteCode>
groups on the Primary Site server.
Is this allowed?
Thanks

SG500 LAG over multiple switches

Hello, does SG500 support LAG with ports on multiple switches? I would like to stack a pair of SG500 and connect each client to both using LACP in order to achieve switch redundancy.

Hi Christopher,
Thank for your reply, could you help me out at the same time while testing the performance of a LACP over two switches of one stack?
Could you connect a SGE2000 switch with four CAT6 UTP cables to the SG500 stack (two cables to each switch of the stack) and test why the SGE2000 switche dont work correctly as simple access switches for end systems like desktops (the ports take very long to go into forwarding and it seems the LACP port on the SG500 stack turns off and on). When the ports start forwarding the connection is stable but i never had this with sg300-52 or srw2048 switches in the same setup. I added my configs and question here: https://supportforums.cisco.com/message/4155309#4155309
Thanks in advance,
Jelle

Multisim: supporting multiple switches

Why can't I support multiple switches off of one power supply?
Randy
Attachments:
Full Adder.ms13 ‏127 KB

Hello,
The digital components you are using have hidden connections to power and ground, however you need to add VCC and GND to the schematic in order to power the digital ICs.
More information about this can be found at:
How Do I Connect Power and Ground to a Digital Component in Multisim?
I made the change to your circuit and it seems to be working now.
Best,
Fernando D.
National Instruments
Attachments:
Full Adder_v2.ms13 ‏118 KB

Can we connect single server to the multiple switches?

Hello Team,
I want to redesign the Client network in order to provide network availability and fail over. I have designed attached diagram. I have doubt if we can connect a server having multiple NICs to different uplink switches.
let say NIC1-2 is connected to Uplink Switch1 and NIC3-4 is connected to uplink Switch2. I want to do this so that if uplink switch1 dies then still server would be accessible via switch2.
is there would be any problem like mac address flapping? also, I know we can configure NIC teaming but i am not too sure how that would be helpful with my attached setup.
can you guys please look at the attached diagram and provide me your inputs?
Thanks for response.

Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
It depends on what the server's multiple interfaces support.

Cisco SG300 - IGMP and multiple switches

Hi all,
I have read through various Cisco documents and tried various configurations and i have been unsuccessful
Here is the network layout
Cisco SG300-10 in Layer 3 mode, managing all VLANS created and inter-vlan traffic is working fine
Ports 1-4 are in LAG 1 with LACP enabled, Ports 5-8 are in LAG 2 again with LACP enabled, port 9 is connected to the ASA 5505 (Trunk port, all VLANS) and port 10, again a trunk port I use for management
LAG 1 and 2 are connected to Cisco SG300-52 switches
again traffic between the switches is working ok, what we would like to do is the following
on VLAN 7, we have multiple devices streaming using UDP multicast, what we would like to do is allow PC's on VLAN 5 to be able to pick up these streams as and when they need to, the devices broadcast on their own unique UDP ranges
Could someone please explain to me what I need to configure on the Layer 3 switch and the other two Layer 2 switches in order for this to work?
If i put a port into VLAN 7 and can view the stream without a problem, also if there is any fine tuning to be done once this is working
Thanks
Andy

Jason,
The only advantage you would get from using SFPs (fiber tranceivers) in the GBIC slots would be if you needed to make a run of over 100m between the switches. Unless you have a very large property with switches at either end you are just as well to use the copper ports in the setup you described. There is also nothing wrong with chaining the SG100s together if necessary to free up a port on the RV320. The only other thing to consider is if you are using VLANs. Each unmanaged SG100 will only pass a single VLAN so if you need segregated distribution coming from the RV320 you would need to put each SG100 on its own port. Or, you could run a trunk from a port on the RV320 to your SG200 and then split off your untagged VLANs from there. Hope this answers your question and have a nice day.
Regards,
Mike.V

Teaming servers to multiple switches

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