Difference between vpc peer-switch and vpc+

Hi, I would like to understand the difference between vpc peer-switch when used in vpc and vpc+ when used in fabricapath when both are delivered to achieve the same thing i.e making the 2 nexus switches look like a 1 logical switch to an other device connected to it.

Hi,
vPC+ overcomes a problem we would have when connecting non FabricPath devices to the FabricPath cloud in a resilient way using port-channels.
If you look at the first diagram below, when Host A sends traffic to Host B, it can be sent over either link of the port-channel and so can take the path via either S100 or S200. The problem with this is that from the perspective of the MAC address table on S300, the MAC address of Host A would be constantly flap between being sourced from S100 and S200.
What happens with vPC+ is that S100 and S200 create an emulated switch that effectively becomes the point of connection of the port-channel interface. This is seen in the second diagram as S1000. Now when traffic is sent from Host A it is always seen as originating from S1000 so there's no longer any MAC flapping.
Hope that helps.
Regards

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Duplicate posts. :P
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Hello,
I've deployed an OpenVpn infrastructure (configured in bridging mode) within a VMmare ESX4 environment.
The scenario is this:
A remote client connects to the OpenVpn server (VM1), VM1 also owns an interface where traffic passes in tagged mode complaint to vlan 8021q, VM2 owns a interface on the vlan10. VM1 can ping VM2 without any problem (supposing vlan 10 traffic), but the remote
client cannot ping VM2.
The scenario works perfectly in a physical environment (without any virtual machine).
The scenario is like this:
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is passed). Within the VMware infrastructure this is solvable only by using of the Promiscuos mode feature of the virtual switch port.
I would like to ask if HyperV virtual switches work like VMware ESX virtual switches. So in Hyper-V virtual switches do learn mac addresses actually like a physical switch?

This last packet doesn't pass the vSwitch, so it isn't received by the remote client and the ping fails. This occurs because the VMware ESX vSwitch only knows all the MACs of virtual machines within the ESX environment, it doesn't learn MAC addresses
like a physical real switch and it discards packets sent to unknown unicast MAC addresses (broadcast traffic instead is passed). Within the VMware infrastructure this is solvable only by using of the Promiscuos mode feature of the virtual switch port.
Thank you; I did the same in Wireshark and noticed the ARP reply was not being received by my VMware guest Hyper-V host, so I did an Internet search and found this document at the top of the list. For other people that came here because their VMware guest
Hyper-V lab server's SCVMM 2012 SP1 logical switch virtual network adapter combination could not ping other VMware guests; In addition to "Accept" for your VMware vSwitch (described above), you will need to change your VM Network VLAN ID to "All".

Peer-Switch with vPC and non-vPC Vlan Port-Channels

Hi,
in a design guide i have noticed that it is best practice to split vPC and non-vPC vlans on different inter-switch port-channels. Now, if i want to use the Peer-Switch function, but the port-channel interface of the non-vPC-vlan channel moves into blocking state. The option spanning-tree pseudo-information has no influence. Is peer-switch possible in my kind of topology?
Greeting,
Stephan

I believe absolutly possible. specifically coz peer-switch and spt pseudo-info are specific and local to cisco fabric services running as part of vpc technology. Personally me has lab with vpc-domain compounded of 2 N5Ks. They are peer-switches with spt-pseudoinfo and they have MST running on non VPC links independantly from vpc.

MST / vPC / peer-switch

Hello,
There are two N7Ks connected with peer-link (Po1). There will be some other L2 switches connected to those N7Ks with vPC. Also, there is a separate, dedicated L2 link (Po9) between N7Ks to carry VLANs for orphan ports connected on both N7Ks. Here is configuration:
N7K-1:
spanning-tree mst configuration
name test
revision 3
instance 1 vlan 1-9,12-14,16-1005
instance 2 vlan 10,11,15
spanning-tree mode mst
spanning-tree mst 0-2 priority 4096
spanning-tree pseudo-information
mst 0-2 designated priority 4096
mst 0-2 root priority 4096
vpc domain 1
peer-keepalive destination 1.1.1.2 source 1.1.1.1 vrf peer-keepalive
system-priority 1000
role priority 1
auto-recovery reload-delay 240
peer-gateway
peer-switch
graceful consistency-check
ip arp synchronize
delay restore 30
delay restore interface-vlan 40
interface port-channel 1
vpc peer-link
switchport trunk allowed vlan remove 10,11,15
interface port-channel 9
switchport trunk allowed vlan 10,11,15
spanning-tree mst 2 cost 100
N7K-2:
spanning-tree mst configuration
name test
revision 3
instance 1 vlan 1-9,12-14,16-1005
instance 2 vlan 10,11,15
spanning-tree mode mst
spanning-tree mst 0-2 priority 4096
spanning-tree pseudo-information
mst 0-2 designated priority 8192
mst 0-2 root priority 8192
vpc domain 1
peer-keepalive destination 1.1.1.1 source 1.1.1.2 vrf peer-keepalive
system-priority 1000
role priority 1
auto-recovery reload-delay 240
peer-gateway
peer-switch
graceful consistency-check
ip arp synchronize
delay restore 30
delay restore interface-vlan 40
interface port-channel 1
vpc peer-link
switchport trunk allowed vlan remove 10,11,15
interface port-channel 9
switchport trunk allowed vlan 10,11,15
spanning-tree mst 2 cost 100
In theory, for vPC VLANs, that is those carried over peer-link, global STP configuration should be used. And, because peer-switch is used, both N7Ks will generate the same BPDU (the same Bridge ID with priority 4096), both becomming root. And, for other VLANs, carried over dedicated L2 link, the pseudo-information should be used. That is, N7K-1 should become root, and Po9 should be Designated. The N7K-2 should be backup root and Po9 should be Root port.
Unfortunately, it's not how it works. Maybe I am missing something, but BPDUs sent over dedicated L2 Po9 are exactly the same as for VPC VLANs. N7K-1 becomes root and its Po9 becomes Designated. But, N7K-2 is also a root, and since it sees the same BPDU as it generates by itself, it treats Po9 as an alternate way to itself and places that port in Alternate/Blocking state.
So, am I doing something wrong, or dedicated L2 link cannot co-exist with peer-link? I had no chance to test it, but it may work if I remove peer-switch feature (although it is recommended to have it)
Best regards,
Krzysztof

We have filed
CSCuc41076
vPC Peer Switch Hybrid Topology MST blocking in non vPC Peer Link

VPC, VPC Peer-links and VDC

I have 2 7Ks and will run VPC and multiple VDCs.
Should it be a separete VPC Peer-link and keep-alive link per VDC?
I am not sure but I guess yes since a physical interface should be allocated to a VDC.
I just need confirmation.
thanks

Yes, if you are having 4 VDCs with vPC, you will need 4 separate vPC peer-links. VDC is a physical separation (even though it is the same box) and it cannot communicate across VDC.
HTH,
jerry

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We are on a 620 system and use bsp system login.
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Thanks in advance.
Rob

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[user types|http://help.sap.com/saphelp_nw70/helpdata/EN/3d/3272396ace5534e10000000a11405a/content.htm]

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What is difference between oracle join syntaxes and ANSI join syntaxes ?
why oracle is having different syntaxes for joins than ANSI syntaxes ?
Also Join syntaxes are different in some oracle vesrions ?

BluShadow wrote:
3360 wrote:
Yes it is. The Oracle database wasn't initially designed to be ANSI compliant. As you correctly state the ANSI standards weren't around when it was initially designed, so the statement is perfectly correct. ;)Ok, in one sense it may be correct but it is a completely misleading statement. Not sure why you think it's misleading.Because there was no ANSI standard, so making it sound like a design choice The Oracle database wasn't initially designed to be ANSI compliant. would suggest to most readers that there was a standard to be compliant to.
Like saying Ford originally did not design their cars to incorporate safety features such as ABS, seat belts and air bags.
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{message:id=1785128}

Re: DIfference between Schemas, PCRS' FUnctions and Operations

Dear SAPExperts,
Can anybody pls tell me what is difference between Schemas, PCRS' Functions and Operations.
Thanx in advance
Regards
Aniruddha

Hi Aniruddha
When the payroll driver is executed (for ex: PC00_M40_CALC for INDIA is executed) the schema IN00 (standard schema) is executed and it calls certain functions (functions may use Rules. Rules contain Operation) and also subschemas.
Functions could be of four types
1. Performing some payroll computations (E.g. INEPF function calculates the PF amount of an employee during payroll run)
2. Calling rules (E.g. P0045 function calls a rule INLN to compute the loan details of a personnel number).
3. Getting data from Infotypes (E.g. P0581 will get the data from Infotype-581 for payroll processing).
4. For some decisions. (E.g. IF & ENDIF function is used to execute as per the true and false decisions) etc.
When the PY is executed SAP uses lot of Internal Tables to store data and also provides data to other internal tables.
The read and change access to Internal Tables is enabled using functions that are executed in a personnel calculation schema and using operations that are executed in personnel calculation rules.
The following is just an attempt to provide some info on how Functions are processed during the PY Run. For ex: (functionality of subschema XIN0 and INBD)
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I.     Specify program type (payroll or evaluation)
II.     Set switch for database updates (YES/NO) all database updates are controlled via this switch (otherwise simulation)
III.     Only infotypes from the HR master record which apply to the selected personnel number are read.
IV.     All Time Management infotypes are imported.
V.     Specify check against control record PA03 (test or live).
2. READ BASIC DATA: Once the Initialization of Payroll is successful, the subschema INBD is called. This subschema reads the Basic data of an employee who is there in the Payroll execution. Basic Data includes, determining Employee Name, Reading Work Center/Basic Pay Data, Setting Financial Year Dates and Allowance Grouping Tables, Reading Previous Employment Tax Details, Reading Housing (HRA/CLA/COA), Reading Exemptions, Reading Income from Other Sources, Reading Section 80 Deductions, Reading Investment Details (Sec 88), Reading Provident Fund Contributions, Reading Other Statutory Deductions, Reading Car and Conveyance, Reading Long Term Reimbursements, Read ID Details. Function GON checks whether all the master data has been imported, no further processing of schema will occur unless certain data is present.
The Subschema INBD calls the following functions in order to read the Basic Data:
ENAME :
Function ENAME reads the last valid name of the employee in the payroll period. The formatting used for the country in question is used when displaying this name.
WPBP
If an employee receives a pay increase within a payroll period, the Basic Pay infotype (0008) is changed and delimited as of a specific date. Two data records exist for one payroll period.
During payroll, the system writes the Basic Pay wage type to the results table with two different indicators. These split indicators are a link to the WPBP table that contains the relevant values. The system takes into consideration both data records for the corresponding partial periods when calculating remuneration.
ININI
P0580
P0581
P0582
P0584
P0585
P0586
P0587
P0588
P0583
P0590
P185I
GON :
                Function GON checks whether all the master data has been imported. No further processing of the schema will occur unless certain data is present. Checking procedures vary from country to country. There must always, however, be a work center (P007).
[Def. of Functions, Rules and Operations (copied from Raju's answer)
Schema is a collection of functions
A Rule is a collection of operations.
An operation is a very basic piece of logic that is used, mostly, to manipulate wage types
Best Regards
Reddy

What's the difference between the triangle icon and the square icon on the

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Both mean that the bookmark is a group or folder of multiple addresses.
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Hi Mallardnathan,
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Cindy
Small Business Community Manager
twitter: https://twitter.com/CiscoSBsupport
Instagram: http://instagram.com/ciscosmallbiz/

Difference between cost component structure and cost component split

can anyone explain me the difference between cost component structure and cost component split with simple example
thanks
santosh

Hi ,
cost component structure
Definition
Number that identifies the structure.
Use
In Product Cost Controlling, the cost component structure determines how the results of material costing are updated. The cost component structure groups the costs for each material according to cost component (such as material costs, internal activities, external activities, and overhead). If the material is used in the production of another material, the cost component split (which breaks down the costs according to material costs, internal activities, external activities, overhead, and so forth) remains in the system when the costs are rolled up.
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Which part of the costs are fixed costs
Which costs are
cost of goods manufactured and what are sales and administration costs
Which costs are relevant for stock valuation, commercial inventory valuation and tax inventory valuation
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Auxiliary cost component split
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Please rewad points
Sunil

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##### CISCO####
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####JUNIPER####
protocols{bgp{
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Difference between vpc peer-switch and vpc+

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