Optimize mtu and mss

Dear all,
It is about a IPSEC/GRE over WAN...
Would you please confirm or comment the following in terms of MTU:
1. On GRE tunnel interfaces "ip mtu" and "ip tcp adjust-mss" is mandatory. "tunnel path-mtu-discovery" is good to have and will allow DF bit to be set in the outer header. If "tunnel path-mtu-discovery" is to be applied, ICMP should not be blocked between routers.
2. On inside router interfaces "ip tcp adjust-mss" is mandatory and will be the same value as on the tunnel interfaces. This will make sure TCP traffic from inside hosts is OK.
3. It is mandatory that ICMP messages are not blocked between inside hosts and WAN routers in order for PMTUD for hosts to be working.
Thanks in advance,
Mladen

No you have not mis-read the document - maybe just been lead down a path a little, my answers are based on experiance.
I have found that tunnel path-mtu-discovery/PMTUD/BlackHole MTUD do not work in 99.999% of the cases where I have had mtu issues - Windows OS has been where the issues lie. I have never encounted a time where the Windows OS has actually taken any notice of the ICMP fragmentation needed message has been recevied.
Some Cisco platforms cannot use the tcp mss adjust command on transient packets, only packets sourced from the deivce are effected.
Cisco firewalls, have default configuration in regards to fragementation - the packets will be fragemented prior to encrypting the packet and they copy the DF bit = the packet will be dropped due to being oversized.
What I do when dealing with GRE/IPSEC tunnels is either:-
1) Change the MTU of the workstations/servers - works in small enviroments, does not scale.
2) You do not have to worry about MTU/MSS sizes on internet sites generally, as the remote servers wil 99% negotiate a small MSS.
3) Use where possible tcp mss adjust on routers and firewalls (this is a great place, especially when you are not using GRE tunnels)
4) Perform packet captures to determine if an application will send ALL packets with the DF bit set, or as normal just the TCP handshake.
Below is a good example:-
http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a008081e621.shtml
HTH>

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Advice required on optimal MTU and MSS settings for GRE and IPSEC connections

Hi,
We have 2 remote sites (Site A and Site B) which connect to our datacentres (DC) over IPSEC VPN and connect to each other over GRE tunnels.
We had some issues recently which we believe were MTU/MSS related (browsing web servers at one location not appearing correctly etc)
We got some advice from our Cisco partner and tweaked some settings but I'm still not convinced we have the optimal configuration - and we still have some problems I suspect may be MTU related. For example, from our DC (connected to Site A by IPSEC), we CANNOT browse to the webpage of the phone system hosted at Site A. Yet, we CAN browse to the webpage of the Site A phone system from Site B (connected over GRE)
Site A and Site B have two WAN internet circuits each - and each provider presents their circuit to us as ethernet.
Here are the relevant interface settings showing the currently configured MTU and MSS (both routers are configured the same way)
Can someone advise on what the optimal settings should be for our MTU and MSS values on the various interfaces or how we might best determine the values?
interface Tunnel1
description *** GRE Tunnel 1 to SiteB***
ip address [removed]
ip mtu 1400
ip tcp adjust-mss 1360
keepalive 30 3
tunnel source [removed]
tunnel destination [removed]
interface Tunnel2
description *** GRE Tunnel2 to SiteB***
ip address [removed]
ip mtu 1400
ip tcp adjust-mss 1360
keepalive 30 3
tunnel source [removed]
tunnel destination [removed]
interface GigabitEthernet0/0
description "WAN Connection to Provider1"
ip address [removed]
ip access-group firewall in
no ip redirects
no ip unreachables
no ip proxy-arp
ip mtu 1492
ip nat outside
ip inspect cbac out
ip virtual-reassembly in
crypto map cryptomap
interface GigabitEthernet0/1
description "Connection to LAN"
no ip address
ip flow ingress
ip flow egress
duplex auto
speed auto
interface GigabitEthernet0/1.1
description DATA VLAN
encapsulation dot1Q 20
ip address [removed]
ip access-group 100 in
ip nat inside
ip virtual-reassembly in
ip tcp adjust-mss 1320
interface GigabitEthernet0/1.2
description VOICE VLAN
encapsulation dot1Q 25
ip address [removed]
ip nat inside
ip virtual-reassembly in
ip tcp adjust-mss 1320
interface GigabitEthernet0/2
description "Connection to Provider2"
ip address [removed]
ip access-group firewall in
no ip redirects
no ip unreachables
no ip proxy-arp
ip mtu 1492
ip nat outside
ip inspect cbac out
ip virtual-reassembly in
duplex auto
speed auto
crypto map grecrypto
Thanks.

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.
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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
http://www.cisco.com/c/en/us/support/docs/ip/generic-routing-encapsulation-gre/25885-pmtud-ipfrag.html

Diff between ESS Team Calendar and MSS Team Calendar

Hi,
Can anyone please let me know is there any difference between ESS team calender that employees see in the Leave tab and the Mss team calender that the managers see for their team.
In our system, it so happens that a user who is a chief sees the org structure in which he is as an employee only ( not manager) in the ESS team calender. However users who have both the ESS and MSS roles see the org structure which is reporting to them in the ESS and as well as the MSS team Calender.
i already searched SDn and SAPnotes for this and was unable to find anything useful.
Can anyone please let me know from where does the team Calendar fetch the details from the back-end both in the case of ESS and MSS.
regards,
pinki

ESS Team calendar is meant for the employees to see the other colleagues in their Org unit
MSS Team calendar is used by the manager to see the
employees reporting to him directly or indirectly (configuration available)
All this comes from leave request application, Ie sent leave
approved status etc, and of course the infotypes 2001
and 2002.
Check for team calendar in help.sap.com you ll find very good documentation on this.
http://help.sap.com/erp2005_ehp_03/helpdata/EN/4d/c19ce6ef2842258283afc35a54172a/frameset.htm

Purchase/Material Reservation do we have standard in ESS and MSS.

Purchase/Material Reservation do we have standard in ESS and MSS. IF we have tell me the version of ESS/MSS .

Hello
Please tell me exactly what you want ?
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M B Raju

Configuration of ESS and MSS in Portal for HCM

Hello Friend's,
        This is suresh calling for clarifications and doubts in HCM...   see i'm new to portal, but my requirement is to configure ESS and MSS for HCM... i dont know actually wat needs to be done and the way of approach... these are the doubts,
1. Basic steps for Portal Configuration
2. I need some docs for configuring ESS and MSS...
3.   a) After configuring ESS and MSS, wat needs to be done.. suppose my client is asking for Leave Request in ESS, whether    i need to create that application in webdynpro java or webdynpro abap in backend and i've to call that application in portal throgh iview...
     b) or by doing the configuration of ESS, by default i will get all the aplications(e,g, Leave Request, Travel Managemetn ....) from that package and it will display in iview...
I dont know basic steps .... plz help me ... Thanks i advance...........!

Ok. Here are the answers:
1. Basic steps for Portal Configuration
   > Download ESS/MSS Business Package, it has two parts Business Package for ERP 2005 (Contains iviews, Roles etc) and XSS 5.0 or 6.0 depending upon the version of the ECC.
> Make sure that you have SAP_HR and EA_HR component installed on your ECC box.
> Also make sure that there is no compatibility mismatch between version of SAP_HR, EA_HR and XSS.
> Configure the JCo Destinations, create required system definition and establish SSO between ECC and Portal.
> Assign the role to the users
> After doing these steps you can see the SAP provided iviews etc working PROVIDED configuration on HR side are already done. (This is just to get initial configuration work)
2. I need some docs for configuring ESS and MSS...
> Provided by Bala above
3. a) After configuring ESS and MSS, wat needs to be done.. suppose my client is asking for Leave Request in ESS, whether i need to create that application in webdynpro java or webdynpro abap in backend and i've to call that application in portal throgh iview...
> Look for that application in WebDynpro (identify the component from iView properties) and show it to the client.
If they are Ok with the basic things then fine else they need to specify the kind of customisation they want in this component
Options available if we need to modify the components
>>Copy the component in your namespace and do the modification using NWDINWDS
>>If some field need to be disabled, you can do the same using Self service administration.
b) or by doing the configuration of ESS, by default i will get all the aplications(e,g, Leave Request, Travel Managemetn ....) from that package and it will display in iview...
Hope this helps. ...

Differences Between Optimizer Solution and Planner Solution in Project Server Events

Dear All,
Does anyone know the differences between Optimizer Solution and Planner Solution in Project Server?
In http://msdn.microsoft.com/en-us/library/office/gg204879(v=office.15).aspx and http://msdn.microsoft.com/en-us/library/office/gg200978(v=office.15).aspx, they stated same definitions for both Optimizer Solution and Planner Solution.
Thank you.

Not entirely sure, but I'd guess they are the same. This is probably a relic of the old Portfolio Server which had Planner and Optimizer as separate modules. My guess is that some of that got grandfathered in to Project Server, but due
to functionality creep, ended up meaning pretty much the same thing.
Andrew Lavinsky [MVP] Blog: http://azlav.umtblog.com Twitter: @alavinsky

ESS and MSS configuration in sap ECC 6.0

Hello friends,
In our ECC6.0 system we want to configure ESS and MSS... well is this ECC6.0 system have contains this settings in predefine or i have to apply for some patches and addons???? what will be the further steps for basis peoples in this ESS and MSS configuration??? please help me...
Regards
Farkath
Edited by: farkath ulla on Nov 29, 2011 4:34 PM

Hello Farkath,
Please go through the below wiki to get more details of components required in ECC to configure ESS/MSS in portal.
http://wiki.sdn.sap.com/wiki/display/EP/DownloadinganddeployESSand+MSS
Good Luck.
Thanks,
Siva Kumar

Changing ESS and MSS Pictogram

I am trying to changing the standard icons that came with ESS and MSS business package with custom icons.
I have places my custom icons - using SE80 and going to MIME repository and saved it there.
But when I go to SPRO and go for the Homepage Framework - they do not show up in the list?
Please advice.

You need to assign this your resource
SPRO   > Cross Application Component   > Homepage Framework   > Define
Resources   > New Entries
SPRO   > Cross Application Component   > Homepage Framework   > Areas
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refer the steps here
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/b0e3a488-cdc2-2b10-209b-e01a0ed934b4?quicklink=index&overridelayout=true

BP ESS and MSS

Hello,
I have SAP ERP 6.0 and portal 7.0 with ESS and MSS versión 1.0. We need to update to the versión 1.41 but in this link says that is required the EHP4 in the ERP. Is that true do we have to upgrade the ERP first?
http://help.sap.com/erp2005_ehp_04/helpdata/EN/76/77594d165144a1a9bff9aae1e26b26/frameset.htm
Please help me with this.
Regards

Just to note ---> In WD ABAP there is still dependanices between software components for example BP HRA 1.11 is WD ABAP - there is still key dependancies between BP HRA, SAP_HR, EA_HR and SAP_BASIS
Also moving to 1.4 is considered a move to EHP4 - which means moving ECC to EHP4 as well - however this applies evern for current WD ABAP products - for example if you want BP HRA 1.41 (WD ABAP) you will also need EHP4 in the back-end (as per note 1375308) so the architecture is very similiar
Whether EHP5 changes all this is not yet clear
Best wishes
Stuart

Hi Friends: Do we have ESS and MSS in ABAP web dynpros

Hi Forum,
Do we have SAP std. web dynpros on ESS and MSS , do you list out this ABAP web dyn on this..
Thanks in Advance,
Srinivas M.

Hi , Vivek has right, SAP is slowly migrating WDJ/BSP applications to WDA technology.
In fact, referring to Employee Self-Service, since 1.5, all aplications come in WebDynpro ABAP technology (Note [1450179|https://service.sap.com/sap/support/notes/1450179])
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Most applications for HR Administrator was converted to WDA since 1.2 version (EHP2).
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Best regards!
Sergio Sarasti

Enhancing standard ESS and MSS Adobe Interactive Forms

Hi,
I need to enhance the existing ESS and MSS Adobe Interactive Forms ie I need to add and delete some fields on the form (text fields, drop-downs, radio buttons)
Could you please tell me the steps to go about it in ECC 6.0
Where do I add my code and how.
Thanks
Neha

Hi,
You can check the below links which can help you.
http://it.toolbox.com/wiki/index.php/SAP_Interactive_Forms_by_Adobe_and_SAP_Smart_Forms_for_Human_Capital_Management_%28HCM%29
http://www.adobe.com/manufacturing/pdfs/MSS_ESS_sap_interactiveforms_sb.pdf
Thanks & Regards,
Sandip Biswas.

Information required regarding ESS AND MSS

Hi All,
I am new to ESS and MSS BUSINESS packages
We are currently using SAP NETWEAVER ENTERPRISE PORTAL 6.0
We are planing to implement ESS AND MSS business packages
Can anyone tell me wht version of ESS AND MSS business packages
I need to download from service market place
Please tell me the path in service market place from where I can
download the business packages
Also tell me the procedure or navigation steps how to deploy the ESS AND MSS business packages using SDM.
Inorder to implement these packages do we need to have access to R/3
from portal ( Do we need to configure SAP R/3 System in the system landscape directory of Portal)
Thanks in advance

Hi Rev,
Follow this link for document about configuring ESS... this document has every thing that can clear your doubts...
[Configuring ESS Business Package for Enterprise Portal|https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/21eb036a-0a01-0010-25a3-b2224432640a]
Regards,
Nrisimhanadh

Ess and Mss Business Packages

Hi Gurus,
I am new to Ess and Mss,
can anybody explain me about the
benefits of Ess & Mss Business packages and moreover i want to how many predefined workflows are their in it.
Regards
Subash

its better you refer the help documents on this.
http://help.sap.com/erp2005_ehp_03/helpdata/EN/2e/5a5d45d9f24fbdb06be2ff53651c3e/frameset.htm
For leave request, Working Time etc you can choose the Workflow option.

ESS 50.4 and MSS 60.1.20 for R/3 4.7 using EP7.0 and external ITS 6.20

SAP@WEB studio
Hi All,
we are implementing ESS 50.4 and MSS 60.1.20 for R/3 4.7 using EP7.0 and external ITS 6.20.
1).
first of all is this landscape possible ?
2).
If it is possible then do i need SAP@WEB studio along with the external ITS ?
3).
once i install external ITS what are the stpes to be followed next ? i mean how can i connect to r/3 from the portal using the ITS ?
thanks and regards,
PK

PK,
Please see the ITS Administration guide and the ITS Installation guide.
You will see that when you install the External ITS you will be asked for R/3 connection information, such as logon group, hostname, system name, system number, message server, depending on what connection method you choose.
As for connecting the External ITS to Portal, as I stated, you will create iViews in the Portal and you will be asked for a URL. The URL is the External ITS URL, which should be something like http://hostname:port/scripts/wgate/service/!
Please read the guides and FAQ. Thank you.
Edgar

Installing XSS (ESS and MSS) on EP 7 and ECC 5.0 (and ECC 6.0)

Hello,
I need to install XSS (ESS and MSS) on EP 7.0 SP9 and ECC 5.0 and also on ECC 6.0.
I do NOT know what steps I need to perform (installations & configurations).
Could anyone please help me ?
Is the procedure different between ECC 5.0 and ECC 6.0 ?
Please, help.
Kind regards,
Gil

Hello Gil,
1) As I wrote in my second posting, I think I installed the EP 7.0 correctly for XSS and the BP ERP for ERP2005.
Where can I find what configurations I need to undertake and what patches I should install so the XSS and the BP will work correctly ? (that is besides getting error messages when using an XSS iView)
<b>You need to install the foloowing Web Dynpro Components in ur J2EE server.
PCI_GP
MSS</b>
2) If the projects decides NOT to upgrade to ERP 2005 BUT to stay with ERP 2004, do I need to install the EP 7.0 ALL over AGAIN ?
If so, how do I install both the BP ERP 2004 and XSS on it in ONE installation (as I performed in for the BP ERP 2005) ?
If NOT, how do I uninstall the BP ERP and XSS of the ERP 2005 and install those for ERP 2004 ? OR does the BP ERP 2005 support ERP 2004 as well ?
<b>The pre-requiste for BP ERP2005 is a backend ERP2005. So it will not function with backend ERP 2004.
You don't need to uninstall anything. Just download the Mysap ERP 2004 BP and do the necessary configuration to connect it to the BACKEND ERP 2004.This will solve the problem.
You can find the configuration guides and other information abt the BP here.
https://websmp205.sap-ag.de/~form/sapnet?_SHORTKEY=01100035870000687949& --> Click on Documents -> Manager Self service.
Hope this solves ur problem.</b>
Regards
Deb
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Optimize mtu and mss

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