CSS11500 - balancing upon src IP

Hi all,
My question is: is it possible and how, to balance upon the src IP address of the client. I mean some of the src addresses (for example: 192.168.100.0/24) are always using service1 and service 2 on VIP, and some others (192.168.200.0/24) service3. As I know, balance and advanced balance cannot do it (this is not configurable algorithm).
Regards,
Krzysztof

Hi Krzysztof
Yes you can load balance on the source ip address of the client. Here is a link that explains all the possible load balancing alogorithms you can use.
http://www.cisco.com/en/US/products/hw/contnetw/ps792/products_configuration_guide_chapter09186a00801579f2.html#wp1038118
HTH

Similar Messages

HTTP Redirect based upon SRC IP Address

Is there a way to perform an http redirect based upon user's source IP address on the CSM/GSS environment?
Logic:
IF < src ip address is within exception list > THEN
http redirect to URL2
ELSE
http to URL1
END

Is there a version of this solution (redirect by client source IP) for the CSS?
I'm attempting to redirect clients from a few specific networks (source IP's) to the VIP of a second CSS using a service-type redirect and "prefer " ACL commands:
clause 10 permit any 1.1.1.0 255.255.252.0 destination content owner/content-rule prefer service-type-redirect
There is an "any any destination any" last clause in the ACL for the remaining source IPs. The ACL is applied to the incoming circuits leading to the webservers.
A show of the ACL's shows all responses - no matter the client source IP - being caught by the permit any clause at the end of the ACL.
Extra points: this is a one-arm design with source group destination applied (to return server traffic to the CSS) and traffic is https with SSL terminating at the servers (no SSL module). Content rules are set to be sticky for srcip. Both CSSs are answering content-based DNS queries for the same URL with their local VIP address (but controlling which DNS server clients query isn't readily possible, so static proximity using DNS didn't provide the answer).
Each CSS is in a different data center: the idea is to keep traffic local by redirecting non-local traffic to its "local" (the other) CSS if services are active (and to keep traffic on the first CSS if the services at the redirected-to CSS are down).
Don't want too much, do I? ;-)
Thanks for everyone's time -
-K.

Lightroom Changes RAW White Balance Upon Import?

Hi All,
I'm new to Lightroom so bear with me. My problem lies in the import process: each time I import, a yellow tint (tungsten WB) is added to each photo, as if the white balance is being changed. I know that thumbnails are created in camera, but the photos look fine when Lightroom is "loading" them on the library screen, it is only when the "loading" message goes away that they look too yellow. I don't want to apply an import preset because I fear that each photo's problem is unique. When I use quicklook in finder, the images look fine. When I export as a jpeg from LR, the problem persists. Here's what I'm using:
Camera: Canon T2i (Color Space: sRGB)
Lightroom: Version 4.0
Computer: Macbook Pro, Snow Leopard
I've read that this could be caused by a corrupt color profile, but I'm not sure how to change this on a Mac and if it's appropriate to apply sRGB as a monitor profile.
Any help is appreciated!!

The initial preview is the camera generated JPEG (should match the LCD). Then LR builds it’s own high quality previews based on it’s engine. Hence the difference. Ignore the original OR if you really like it, try making a preset for importing the images that honor that rendering. Bottom line, the initial previews are not any reality to what LR is going to initially produce based on all those sliders.

Off center default sound balance upon boot-up

Whenever I boot up my iMac the sound output balance goes all the way to the left speaker. I set it to center, but the next time I restart the computer it defaults back to the left. Any ideas? It has been that way since I got it.

I have the same problem with mi iMac 21.5 inch late 2009. I restarted it several times. Looks like we need to set its slightly to the right from the center to get the headphones and speaker to the center balance... I haven't found any solution yet...

App.server load balancing for SAP System with 1 PS

Hi,
In SAP CPS 7.0 (Build M26.12) I have a SAP system with Central Instance + 10 App.servers, but all instances are managed by 1 ProcessServer.
After activating the "App.server load balancing" setting in SAP system definition the application servers are becoming visible in CPS with their load factors (number of BGD wp's on app.servers) and load numbers (number of active jobs on app.servers).
This is so far fine, but the additional functionality is not working as I would expect, I have issues with 2 functionalities:
1. Based on documentation after activating also the XAL connection the CPS should submit the job on app.server with best performance based on XAL monitoring data filling the TARGET_SERVER parameter.
This functionality is not working for me at all
2. A useful functionality after activating the "App.server load balancing" setting is that the ProcessServer is going to "Overloaded" status when all BGD wp's of SAP system are occupied, thus restricting submitting new jobs during overload situation. But I had an issue also with this functionality, after SAP system recovery from overload situation, the CPS still remained in Overload status (so no new jobs were submitted).
As a workaround I had increased the treshold values for loads on all app.servers for this SAP system, what was fine for several days, but after a while I believe this was a reason of unexpected performance issues in CPS, therefore I have deactivated the 'App.server load balancing" setting at all for this ProcessServer.
I would appreciate your feedbacks with this functionality.
Thanks and Regards,
Ernest Liczki

Hi Preetish,
This connect string option is to loadbalance RFC connections. These are balanced upon login, once you are connected to a particular application server (AS) you stay on that server until you reconnect.
Since CPS uses multiple RFC connections, this will result in the connections being distributed over the available AS resources which is fine as long as they are generally evenly loaded. If you have certain AS hosts that are continuosly more loaded than the rest, then you probably don't want the CPS RFC connections to end up on these servers.
The original question is about loadbalancing of batch jobs over the available AS resources, and this is done independent of the RFC connection load balancing. Even if all CPS RFC connections are pinned to the DB/CI host, you can still loadbalance jobs over the available SAP AS hosts, either by using SAPs builtin balancing, or the CPS algorithm by activating the checkbox as indicated in the first entry in this thread.
Finally, to reply to Ernest's question: I believe there are some fixes on the app load balancing in the latest release, M26.17 should be available on the SWDC now.
Regards,
Anton.
Edited by: Anton Goselink on May 29, 2009 9:06 PM

LACP/Load Balancing Question

This past weekend we replaced our Catalyst 4506 switches with a combination of Catalyst 4500-X switches (provides fiber and 10 GB connections to our closet switches and our UCS) and 2960-X switches (all other servers and printers are connected here). Our backup server has two NICs teamed into a NIC Team (port 35 and 36 on the 2960-X switch). The NIC team was set to the following:
Team Type Selection: 802.3ad Dynamic with Fault Tolerance
Transmit Load Balancing: Dest IP Address
Since we switched to the new switches we are seeing a high number of discards from our backup server on one of the ports in the NIC team. I verified the port-channel configuration on the switches and set the "port-channel load-balance" to src-dst-ip. When running the test etherchannel command from one of my servers to the backup server it responds that it would choose port 36. When I run a backup from this same source server to my backup server it chooses port 35 for everything. I would expect this if the data is coming from the same source ip to the backup server. To confirm this I added another test job from a different source IP. It still only chooses port 35.
If I "show lacp 3 counters" here's what I see:
             LACPDUs         Marker      Marker Response    LACPDUs
Port       Sent   Recv     Sent   Recv     Sent   Recv      Pkts Err
Channel group: 3
Gi2/0/35    14616 12368    0      0        0      0         0
Gi2/0/36    14628 12368    0      0        0      0         0
From this it appears the switch is pretty evenly distributing data across both channels. Am I correct? If that is true then is it a fair assumption that something on the backup server is rejecting the data on port 36 and thus causing the discards?
Just need an opinion on what might be going on to help convince people as to where the problem lies.
Thanks.

Disclaimer
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Posting
4500-X says:
Port Buffers
32-MB Shared Memory
2960X says:
Feature
2960-XR
2960-X
2960-S
2960
Egress buffers
4 MB
4 MB
2 MB
2 MB

Unequal Load Balance on Etherchannel (L2/SW3400ME)

Hi, i have a problem with my L2 port-channel between 2 SW ME-3400-24TS-D (12.2(44)SE5), there is a unequal load balance and i don't know how to fixed. Should I change the load balance method?.
All four ports have the same config, except one (int fa0/1 on SW_2) that have this commands:
MAMANIVLN1P1IRA1#SH RUN INT FA0/1 | INC hold
hold-queue 4096 in
hold-queue 4096 out
Should i change this hold-queue config?
Here more outputs where you can see the diference, one link has 2mb and the other link has 60mb,, that's a big diference, i would like to know how to solve this:
SW_1#sh int fa0/9 | inc (Desc|rate)
Description: !!!!!! HACIA SW_2 !!!!!
Queueing strategy: fifo
5 minute input rate 2088000 bits/sec, 2065 packets/sec
5 minute output rate 25000 bits/sec, 46 packets/sec
SW_1#sh int fa0/10 | inc (Desc|rate)
Description: PORTCHANNEL10 HACIA SW_2
Queueing strategy: fifo
5 minute input rate 1905000 bits/sec, 1948 packets/sec
5 minute output rate 63348000 bits/sec, 6095 packets/sec
SW_2#sh int fa0/1 | inc (Desc|rate)
Description: Hacia SW_1_Fa0/9
Queueing strategy: fifo
30 second input rate 27000 bits/sec, 48 packets/sec
30 second output rate 2385000 bits/sec, 1996 packets/sec
SW_2#sh int fa0/2 | inc (Desc|rate)
Description: PORTCHANNEL10 HACIA SW_1
Queueing strategy: fifo
5 minute input rate 63567000 bits/sec, 6114 packets/sec
5 minute output rate 1935000 bits/sec, 1976 packets/sec
more outputs...
SW_1#sh etherchannel load-balance
EtherChannel Load-Balancing Configuration:
src-mac
EtherChannel Load-Balancing Addresses Used Per-Protocol:
Non-IP: Source MAC address
IPv4: Source MAC address
SW_2#sh etherchannel load-balance
EtherChannel Load-Balancing Configuration:
src-mac
EtherChannel Load-Balancing Addresses Used Per-Protocol:
Non-IP: Source MAC address
IPv4: Source MAC address
SW_1#SH MAC ADDress-table INTerface po10 | inc Total
Total Mac Addresses for this criterion: 297
SW_2#SH MAC ADDress-table INTerface po10 | inc Total
Total Mac Addresses for this criterion: 66
In advance thanks for the help.

Normally it will fairly well balance the traffic . There is no way to make sure each channel is exactly the same utilization wise . You can look at how it is load balanced and make a change from say mac to ip address if it looks like you aren't getting the balance you want . It would be very rare that you are going to fill one port on the channel without filling the rest almost the same .Exceptions would be if you most of your traffic is headed to one place like a certain server , even then if you used ip addresses in both directions as the load balance I think it would balance out pretty good. If it got to that point where one link was almost filled you would have to think about adding another port to the channel . This is a real good page http://www.cisco.com/en/US/tech/tk389/tk213/technologies_tech_note09186a0080094714.shtml

Etherchannel load balancing options

Reading up on my Etherchannel load balancing options (src or dst, mac or IP) it seems to me that I don't have a good way of using Etherchannel to increase bandwidth in my situation. In my scenario, I have a Windows terminal server servicing a couple hundred users which are using a SQL database on a 2nd server. Both servers are on the same switch. Basically I only have one MAC and one IP. Is there a way to utilize multiple links in this scenario? It seems like I would need a packet based technique to take advantage of multiple channels and unfortunately that isn't an option with etherchannel. Thoughts?
Thanks,
Diego

Hi Diego,
If I understand you correctly, your scenario is similar to this
200users--Switch===channel===Switch--Server1+2
If that's how it is set up, then you have multiple source addresses with the same destination address. So if you select either 'source' or 'source and destination' as your frame distribution method, then you should have a pretty even distribution of traffic.
HTH,
Bobby
*Please rate helpful posts.

WISM 7.0.235.0 post-upgrade problem?

I upgraded one of our WISM-1 modules from 7.0.98.0 to 7.0.235.0 last night. For some reason, APs don't join with it unless I tell them specifically to do so. We haven't specified primary & secondary controllers on purpose, allowing the APs to determine from DHCP & the controllers' responses and decide on one based on load. This has always worked great for us.
After upgrading, I couldn't get an AP to join the upgraded wism even after I specified the controller in the AP config. So then I changed my 6506 load balancing to src-dst-mac since that is a known (although seldom seen) issue with APs joining a controller for the first time. We usually keep it set at
src-dst-mixed-ip-port. That worked & the AP joined the upgraded wism. Then I reset the load-balancing algorithm on the 6506, removed the specific controller from the AP's config, rebooted the AP, and all is fine. I thought that solved it. Not.
Any other AP that I reboot tries to join the upgraded wism since it has only 1 AP connected, but it fails and the AP joins the other wism running 7.0.98.0. Even if I change the load balancing algorithm to src-dst-mac, src-dst-ip, or src-mac, it won't join unless I specify the upgraded controller, which I don't want to do. I can see the wism responding to the join requests, but the APs still end up on the other controller. It soulds like the years-old load balancing algorithm issue, but that doesn't seem to be the whole answer this time.
I hope this information makes sense to those that are aware of the issues I bring up. Any ideas why the 7.0.235.0 wism isn't getting APs to join it successfully without my specifying that controller? The config hasn't changed, except for what new or changed defaults exist. I suspect it might have to do with one of those.... Or could it be the two different controller versions returning confusing and different responses to the initial query?
Thanks.
Bill

We're not using the built-in DHCP service on the WISMs.
A wise decision.
I've upgrade our WiSM-1's to this version and we don't have any issues.
However, in the past, we use to host our DHCP server for the WAPs and the clients on a plain Linux box and we noticed that the Linux box took a painfully long, long time to dish out IP addresses to around 1k WAPs. We later moved our DHCP server to InfoBlox and the problems go away.
Any other AP that I reboot tries to join the upgraded wism since it has only 1 AP connected, but it fails and the AP joins the other wism running 7.0.98.0. Even if I change the load balancing algorithm to src-dst-mac, src-dst-ip, or src-mac, it won't join unless I specify the upgraded controller, which I don't want to do. I can see the wism responding to the join requests, but the APs still end up on the other controller. It soulds like the years-old load balancing algorithm issue, but that doesn't seem to be the whole answer this time.
Never saw this problem at all.

WLC LAG Mode and Port Channel

So I was reading the controller best practices and got this:
When you use LAG, the controller relies on the switch for the load balancing decisions on traffic that come from the network. It expects that traffic that belongs to an AP always enters on the same port. Use only ip-src or ip-src ip-dst load balancing options in the switch EtherChannel configuration. Some switch models might use unsupported load balancing mechanisms by default, so it is important to verify.
This is how to verify the EtherChannel load balancing mechanism:
switch#show etherchannel load-balance
EtherChannel Load-Balancing Configuration:
src-dst-ip
EtherChannel Load-Balancing Addresses Used Per-Protocol:
Non-IP: Source XOR Destination MAC address
IPv4: Source XOR Destination IP address
IPv6: Source XOR Destination IP address
This is how to change the switch configuration (IOS):
switch(config)#port-channel load-balance src-dst-ip
Now Cisco switches by default will do src-mac. If I make this change obviously this would be a global change. I don't believe it should cause any performance issues but wanted to get some expert opinions on this. Switches my controller will be connected to will also have two routers connected as well via Port Channel.
I'm trying to understand the reasoning behind this.

I've never seen that command cause any issues in any deployment I've worked on.
HTH,
Steve

WiSM PortChannel Issue?

I'm running a WiSM on a 6504E using supervisor code s72033-ipservices_wan-mz.122-33.SXI2.bin. When I add a statement configuring the allowed VLANs on the WiSMs, I get the following errors:
*Aug 5 16:56:35.202: %EC-SP-5-CANNOT_BUNDLE2: Gi2/6 is not compatible with Po404 and will be suspended (trunk mode of Gi2/6 is dynamic, Po404 is trunk)
*Aug 5 16:56:35.826: %EC-SP-5-CANNOT_BUNDLE2: Gi2/5 is not compatible with Gi2/7 and will be suspended (trunk mode of Gi2/5 is trunk, Gi2/7 is dynamic)
*Aug 5 16:56:36.138: %EC-SP-5-CANNOT_BUNDLE2: Gi2/6 is not compatible with Gi2/8 and will be suspended (trunk mode of Gi2/6 is trunk, Gi2/8 is dynamic)
Keep in mind that I don't have the option to configure these gigabit interfaces as they are auto-provisioned by the version of code being run on the switch.
Here are some show commands that may be of interest:
###-###-mdf#sh etherchannel summary
Flags: D - down P - bundled in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use N - not in use, no aggregation
f - failed to allocate aggregator
M - not in use, no aggregation due to minimum links not met
m - not in use, port not aggregated due to minimum links not met
u - unsuitable for bundling
d - default port
w - waiting to be aggregated
Number of channel-groups in use: 2
Number of aggregators: 2
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
403 Po403(SU) - Gi2/1(P) Gi2/2(P) Gi2/3(P)
Gi2/4(P)
404 Po404(SU) - Gi2/5(P) Gi2/6(P) Gi2/7(P)
Gi2/8(P)
###-###-mdf#show wism status
Service Vlan : 3015, Service IP Subnet : 10.139.255.1/255.255.255.0
WLAN
Slot Controller Service IP Management IP SW Version Status
----+-----------+----------------+----------------+-----------+---------------
2 1 0.0.0.0 10.137.139.2 5.2.178.0 Service Port Up
2 2 0.0.0.0 10.137.139.4 5.2.178.0 Service Port Up
###-###-mdf#show etherchannel load-balance
EtherChannel Load-Balancing Configuration:
src-dst-ip
mpls label-ip
EtherChannel Load-Balancing Addresses Used Per-Protocol:
Non-IP: Source XOR Destination MAC address
IPv4: Source XOR Destination IP address
IPv6: Source XOR Destination IP address
MPLS: Label or IP

Do you have qos enabled globally? This was an issue with IOS a while back, but should be fine in SXI
how6506A#sh ver
Cisco IOS Software, s72033_rp Software (s72033_rp-IPSERVICESK9-M), Version 12.2(33)SXI1, RELEASE SOFTWARE (fc3)
maybe they broke it again in SXI2
show6506A#sh mls qos
QoS is enabled globally
Policy marking depends on port_trust
QoS ip packet dscp rewrite enabled globally
Input mode for GRE Tunnel is Pipe mode
Input mode for MPLS is Pipe mode
QoS Trust state is CoS on the following interface:
Gi4/1 Gi4/2 Gi4/3 Gi4/4 Gi4/5 Gi4/6 Gi4/7 Gi4/8 Po407 Po408
Vlan or Portchannel(Multi-Earl) policies supported: Yes
Egress policies supported: Yes
ports listed in above command are my wism ports

How does VFP CDX works internally ?

Hello all,
Are there any information how MS VFP CDX file works internally, what type of trees it use. how
does it function on multi-user environment, memory caching etc...
I have lots Dbf which I use for my clients, I can managed the operation of Dbf file in .Net; but not the CDX file.
I'm starting to convert all my projects to .Net but I still want to work with DBF structure the reason
I'm retaining all my tables. any comments or suggestion about this
Project is greatly appreciated.
Cheers.

Good day sir Olaf,
   Thank's for the quick reply and some good insight ^_^y
"Do you really want to reinvent the low level file access to DBF and CDX?"
I don't think that Fox Software want to reinvent dBase when they release
the first version of FoxBase which is very much a like of dBbase II.
Not to reinvent actually, but to create my own file storage compatible
to all of my existing DBF tables; I can now store up to "16 Gigabytes" of data
on a single table on which a maximum file size of "2 Gigabytes" on most DBF
file engine out in the wild.
"If you want to use DBF data (including indexes) make use of the VFPOLEDB Provider,
that's the easiest way to work with VFP SQL and other commands"
As much as possible I want my probject free from other 3rd party software, as I'm
planning to port this project on MONO upon completion.
I'm comportable using the .NET Language-Integrated Query, making an IEnumerable
(Cacheable) file base records list will suffice for now.
MY main idea are : NoSQL, with a built in LINQ-like features that will
suffice most of the querying using Where/For and While condition with ease
and without doing a database field mapping when accessing a DBF file.
   NoODBC, No need for OLEDB, ADO.Net, VFPOLEDB, SQL SERVER or any other Database
   Connector to access the DBF file.
"The only official file structure description of the vfp help file doesn't go deep:"
Thanks for this link appreciated; most likely CDX is a file base B+Tree; now I'm
just wondering how VFP balance the tree; or it will be super balanced upon the
issuance on REINDEX something like compacting the database on MS SQL.
Thanks ^_^y

InputErrors on Etherchannel despite low Utilization ???

Hi -
we are observing 0.01% and 0.12% InputErrors on an Etherchannel between a 6500 and a 4500 consisting of 4 (resp. 3) GigaBit Links. We discovered that the Packets were simply droped due to "Rx-No-Pkt-Buff" - We have a PRTG Graph showing a rather low utilization of 3% or less (5 min average) over the whole day or week. Customer experiences disconnect session in his SAP and Mainframe Aplications ...
Anybody any Idea how these errors could come into existance? The counters were cleared a few days ago to confirm this observation ...
The EtherChannel Load-Balancing is src-dst-ip (the default) - an the errors are distributed 15 - 30 % among the 4 ports.
Nothing Suspicious in the Logs - a few OutDiscards on some Ports/Channels to a range of servers.
Regards
Robert

Below the show int:
(only 2/1 and 2/2 2/3-4 almost the same)
GigabitEthernet2/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet Port, address is 000f.f742.e9f0 (bia 000f.f742.e9f0)
Description: Trunk zu hbmens03
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000-TX
input flow-control is on, output flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:05, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 6324000 bits/sec, 1168 packets/sec
5 minute output rate 541000 bits/sec, 159 packets/sec
8686920824 packets input, 10581825403873 bytes, 0 no buffer
Received 125157985 broadcasts (111201279 multicast)
5 runts, 0 giants, 0 throttles
9321859 input errors, 1 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
2346102954 packets output, 1775034484330 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
GigabitEthernet2/2 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet Port, address is 000f.f742.e9f1 (bia 000f.f742.e9f1)
Description: Trunk
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000-TX
input flow-control is on, output flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:05, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1620000 bits/sec, 403 packets/sec
5 minute output rate 3448000 bits/sec, 821 packets/sec
12372257480 packets input, 17700592747377 bytes, 0 no buffer
Received 65152265 broadcasts (35997526 multicast)
1 runts, 0 giants, 0 throttles
14274963 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
3467908099 packets output, 1722413143410 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out

GRPO SHOWING OPEN INSPITE OF AP INVOICE BEING RAISED

We have several GRPOs showing open, inspite of raising AP Invoices against the GRPO. These seem to be open as a result of very small differences in the amounts or freight amount. GRPO are linked to the incoming excise invoice & AP Invoice. When we try to raise a AP invoice, by selecting the GRPO which is partially open, it will not show any amount in the item rows, & shows a small amount in the freight. we tried to save this AP Invoice, but get an error mentioning 'due to the distribution method you selected freight charges cannot be distributed among some or all of the rows (Message 439-117)
How can we close the remaining open amount for the GRPO, so that the GRPOs can be closed?

Hi Rahul,
you can right-click on the document header of the GRPO & select 'Close'. You will receive a system message that this process is irreversible. Clicking on 'OK' will permanently close the GRPO.
You need to be certain, however, that the allocation & expense clearing accounts were balanced upon creation of the AP invoice, otherwise you will encounter inconsistencies.
All the best,
Kerstin

IOS to NXOS VPC PORT CHANNEL

Hello
I have a pair of Nexus 5K's in a VPC domain and some 2960's as VPC members, with a port channel to the domain.
Topology is as follows:
5K1 and 5K2 in VPC domain
VPC from 5K1 and 5K2 to 2960
2960 has gi0/1 and gi0/2 in 1 port channel
gi0/1 to 5k1, gi0/2 to 5k2
I know that what I am going to ask may be totally against the purpose of VPC, but, I am looking for a way to favour gi0/1 for traffic, rather than load balancing over gi0/1 and gi0/2. The reaon for this is that I would like to benefit from the lack of loop that VPC provides, but would also like to have a primary and secondary link as the majority of traffic should actually go via 5K1, rather than 5K2.
Any suggestions welcome.
Many thanks in advance
Anthony

Hi Anthony,
The Cisco NX-OS software load balances traffic across all operational interfaces in a portchannel by hashing the addresses in the frame to a numerical value that selects one of the links in the channel. Port channels provide load balancing by default. Port-channel load-balancing uses MAC addresses, IP addresses, or Layer 4 port numbers to select the link. Port-channel load balancing uses either source or destination addresses or ports, or both source and destination addresses or ports.
You can configure the load-balancing mode to apply to all port channels that are configured on the entire device or on specified modules. The per-module configuration takes precedence over the load-balancing configuration for the entire device. You can configure one load-balancing mode for the entire device, a different mode for specified
modules, and another mode for the other specified modules. You cannot configure the load-balancing method per port channel.
You can configure the type of load-balancing algorithm used. You can choose the load-balancing algorithm that determines which member port to select for egress traffic by looking at the fields in the frame.
Note: The default load-balancing mode for Layer 3 interfaces is the source and destination IP address, and the default load-balancing mode for non-IP interfaces is the source and destination MAC address.
From the config mode you can try different load-balacing method ,
port-channel load-balance {dest-ip-port | dest-ip-port-vlan |
destination-ip-vlan | destination-mac | destination-port | source-dest-ip-port | source-dest-ip-port-vlan | source-dest-ip-vlan | source-dest-mac | source-dest-port | source-ip-port | source-ip-port-vlan | source-ip-vlan | source-mac | source-port} [module-number]
To Summarize: I cannot say which port would be selected, it purely depends on type of frame you are sending with the combination of the load-balance method.
After tweaking you can also know from the command which link the traffic is taking,
NEXUS2-SPAN# show port-channel load-balance forwarding-path interface port-channel 71 src-ip 1.1.1.1 dst-ip 2.2.2.2 vlan 51 module 2
Module 2: Missing params will be substituted by 0's.
Load-balance Algorithm: src-dst ip-l4port
RBH: 0xb0 Outgoing port id: Ethernet8/8
we can also try tweaking the same load-balancing on the 2960 also. It purely depends on the load-balancing algorithm. Below is for 2960 Load-balancing tweaking,
http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_53_se/configuration/guide/swethchl.html
Even after doing this i wouldnt say 100% it would select one link.
Hope this helps!
Thanks,
Richard.
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CSS11500 - balancing upon src IP

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