Port aggregation on different switches?

Hello all :)
I got a server PC with two fast ethernet NICs (NICS do support port aggregation)
I know you can connect two 100 Mbps ports of server to two fast ethernet ports of a switch, this way you get one 200 Mbps link. If one of the ports or one of the links fail, other link keeps working.
this is a vey nice redundancy.
My question is;
is it possible to bundle two fast ethernet ports of server to two different switches? (first ethernet port of PC to switch 1 and second ethernet port of PC to switch 2. switch 1 and switch 2 are connected each other with an uplink)
if possible, what is the CLI command for that?
thank you very much for helping.

Hello,
AFAIK, and unless something has changed very recently, the only way to link two (or more) switches together in a single Etherchannel is in a stack configuration.
Nortel appears to have a feature called Split MultiLink Trunking, which does multichassis trunking, you might want to have a look at the document below:
Layer 2 Trunking Availability Strategies using SMLT and DMLT
http://www.informit.com/articles/article.asp?p=169544&seqNum=3&rl=1
Regards,
GP

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Hi:
You may also want to post your question on the HP Business Support Forum -- Web and Unmanaged Switching section.
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Hi William,
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No matter LACP or PAgP is used, is it possible to do port aggregation on a Server with NIC 1 & NIC2 respectively connecting to different Switches which are then having the same uplink to higher level?
as follows : -
Server NIC # 1 ------ Switch #A ----\
---- LAN
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THanks, that's what i'd been understanding, yet, someone else post me this answer, Quote,
For your case, the LAN switches won't care how you send out the packet, it just treat the two NICs as two NICs, your server need to deal with the packet/session aggregation. It works because we suppose your server don't have any STP issues.
Kind Regards,
Bong So
Professional Services, Equant HK
UNQuote
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Hi all,
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JM

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Differenet VLAN's on different switches

In short, I have two SRW 2024 switches connected together. The first one goes to the router, ASA 5510 (supports inter-vlan routing), on the native VLAN and the second one is trunked on port 12 to the first one. I have been doing lots of research and have found ambiguous answers to my question. My question is can I have different VLAN's on different switches? Meaning can I have VLAN 10 on the first switch and VLAN 20 on the second but not have VLAN 20 on the first and VLAN 10 on the second? So far, I have heard that I HAVE to have identical VLAN's on both switches in order for them to be able to talk to each other and I have also heard that that is not true because I can setup routes on my router to make them talk to eachother and get on the internet... Does anyone have a definitive answer to my question? I am totally pulling my hair out on this one...

Well, reading this post now makes me wonder if we have the same understanding.
What do you mean with "have VLAN 10 on the first switch" etc.? What do you mean with "have"?
If you connect the ASA to switch 1, and switch 1 to switch 2. If you use VLAN 20 on the second switch and you want to give VLAN 20 access to the internet through the ASA switch 1 must know about the existence of VLAN 20. The switch will only forward frames for VLANs it knows of. If VLAN 20 does not exist on switch 1 VLAN 20 cannot pass through switch 1.
If you use VLAN 10 only on switch 1 and not on switch 2, you could omit VLAN 10 on the second switch as no VLAN 10 traffic has to go to switch 2. However, generally it is better to have all VLANs on both switches because it makes management easier.
This has nothing to do with routing, though, as the SRWs are only layer 2 switches. Routing allows you to connect a VLAN to another VLAN or LAN or internet.
Think of a single VLAN like a normal switched LAN. Different VLANs are just like different, physically separated LANs.
If you want to allow traffic between these separated LANs you'll need a router which routes traffic between them.
A managed switch with VLANs allows you to run these different LANs on the same hardware, making the individual VLAN assignments configurable.
A port on a managed switch usually is in on of two modes:
* access mode: an access mode port connects to a normal device like a desktop, printer, or similar. An access mode port can be member of a single VLAN only, i.e. you have to decide to which VLAN it is supposed to belong to. In your case, you configure an access mode port for either VLAN 10 or VLAN 20.
With a single switch things are clear now: some ports are VLAN 10 and some ports are VLAN 20. VLAN 10 can talk to each other. VLAN 20 can talk to each other. No traffic passes between VLAN 10 and VLAN 20.
Of course, now you want to connect this switch to some other network devices, in particular the second SRW because you need additional ports or you have an additional location. And there is the ASA which provides internet access for these VLANs.
* trunk mode: This is where trunk mode comes in. A trunk mode port can carry multiple VLANs on a single port. This is done using 802.1q tags. 802.1q tagged ethernet frames have an additional field for the VLAN to which the frame belongs to. With this, a switch can send frames for VLAN 10 and VLAN 20 through a single port to another switch or router. Each frame sent is tagged with 10 or 20 depending on which VLAN the frame belongs to. The receiver will accept each frame and assign it to the corresponding VLAN on the receiving side. This way the receiving switch or router is able to keep those VLANs strictly separated.
So let's say you want two VLANs 10 & 20 in your network. You would create VLANs 10 & 20 on your ASA and both SRWs. (Create only means that the device knows this VLAN exists and is able to handle traffic for this VLAN). You would configure LAN port 1 of your ASA as trunk with members VLAN 10 & 20. You configure port 1 & 24 of your first SRW in trunk mode with members VLAN 10 & 20. You configure port 1 of your second SRW in trunk mode with members VLAN 10 & 20. Now you wire port 1 of your ASA to port 1 of your first SRW. Then you wire port 24 of your first SRW to port 1 of your second SRW.
This creates the VLAN trunk through your network. Traffic in both VLANs can travel through this trunk between the switches and to the ASA and from there, if properly routed, into the internet.
In a very simple scenario you configure all remaining port in access mode. For each access mode port you define whether this port belongs to VLAN 10 or 20. If port 2 is in access mode and member of VLAN 10 then the device connected to port 2 is in VLAN 10.
You are completely free how to assign the VLANs. If you assign ports 2-24 on switch2 to VLAN 20 and ports 2-23 on switch 1 to VLAN 10 this is fine. In this case, you could reduce the VLAN configuration a little by not creating VLAN 10 on the switch 2 and not adding VLAN 10 on the trunk ports connecting switch1 and 2. However, as mentioned before, I would recommend not to do so. If at some point you decide to have a port in VLAN 10 on the second switch everything would already be set up if you created the VLAN 10 on the second switch and added it to the trunk.
You must create all VLANs on your ASA and the first switch in your case. VLAN 20 traffic has to travel through switch 1 (even if there is no end device connected to VLAN 20 on switch 1). Thus, VLAN 20 must exist on switch 1 and the trunk between the ASA, switch 1 and switch2 must carry VLAN 20 for traffic to pass through. If VLAN 20 did not exist on switch 1 no VLAN 20 traffic could travel trough switch 1.
As you only have two switches you will only have a few VLANs which you should be able to create in the beginning. If you really have to add a new VLAN you have to touch both switches and the ASA. But with some planning, it should not be necessary to add VLANs later. With two 24 port switches you won't have more then 48 VLANs anyway.
Your VLANs "terminate" on the ASA. The ASA is a 802.1q capable router. You can trunk your VLANs to the ASA. The ASA allows you to define gateway interfaces in each VLAN which will operate as gateways for each VLAN. Through that VLANs can talk to the internet. You can also configure the ASA to allow inter-vlan-routing, i.e. let specific traffic be routed from one VLAN to the other. For instance, if you have a printer in one VLAN you could allow traffic to this printer from the other VLAN while still blocking any attempt to access other devices on the other VLAN.

Can I create a port channel to two switches that are not stacked?

Two switches, not stacked, but connected together via 802.1q trunk.
Server with four NICs, capable of trunking and LACP.
Can the switches be setup to have an etherchannel between the two switches and the server?

Hi,
In short NO
You would need to connect your server to only ONE switch if you want all 4 nics in the same TEAM.
You could use 2 TEAMS and put 2 nics in each forming a 2 port etherchannel to each switch
Regards,
Alex.
Please rate useful posts.

Different aggregation for different Dimensions

Hello,
is it possible to have different aggregations on different dimensions.
I have following situation:
I have a measure per client and day.
I'm interested in the maximum per month from the daily sums over clients.
In the measure properties I can only choose between Maximum and Sum in general but not per Dimensions.
To clearify what i mean here is some sample data.
* * Client A * Client B *
* 2014-11-28 * 7 * 8 * SUM() = 15
* 2014-11-29 * 6 * 8 * SUM() = 14
* 2014-11-30 * 6 * 10 * SUM() = 16 <-- monthly max
* 2014-12-01 * 7 * 8 * SUM() = 15
* 2014-12-02 * 5 * 12 * SUM() = 17 <-- monthly max
* 2014-12-03 * 6 * 9 * SUM() = 15
This data is stored in my fact table with reference to date and client dimensions.
This example data would have to be reported as:
/* Report on measure
* * Measure *
* 2014-11 * 16 *
* 2014-12 * 16 *
* Report on measure per client
(max per client and month)
* * Client A * Client B *
* 2014-11 * 7 * 8 *
* 2014-12 * 7 * 12 *
Can this be achieved with SSAS? Didn't find any property for that on the measure.
Best Regards,
Thomas

Hi Thomas,
According to your description, you want to calculate different aggregation for different dimensions, right?
Based on your scenario, I tested it on AdventureWorks cube, the query below is for you reference.
with member [Customer].[Country].[USA & Canada] as
Aggregate( { [Customer].[Country].&[United States],
[Customer].[Country].&[Canada]
member [Measures].[MaxAmount]
as
max([Date].[Calendar].currentmember.children,[Measures].[Internet Sales Amount])
select {[Customer].[Country].&[United States],[Customer].[Country].&[Canada],[Customer].[Country].[USA & Canada]} on 0,
[Date].[Calendar].[Month].members on 1
from
[Adventure Works]
where [Measures].[MaxAmount]
Here is similar thread with yours, please see:
https://social.technet.microsoft.com/Forums/en-US/1bd493ef-f957-4fd5-916b-ee60639106c3/calculated-member-different-aggregations-on-different-dimensions?forum=sqlanalysisservices
Regards,
Charlie Liao
If you have any feedback on our support, please click
here.
Charlie Liao
TechNet Community Support

What can be the max difference in cable lengths that we can have between the ISLs in a port-channel between MDS switches?

Hello All
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ref;
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Hello,
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http://www.cisco.com/univercd/cc/td/doc/product/l3sw/4840g/ios_12/config/4840ec.pdf
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Port aggregation on different switches?

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