Network equal load balance

Hello all
I need some help, with using quagga and multipath.
I have Solaris 9 server with stable quagga 0.98.6 and 2 equal routes to one
network. I have both of these routes in routing table, but the Solaris use
only first one for traffic. I would like to share traffic. If I have them in
routing table I suppose the quagga work is done, and now I need tune the
Solaris OS/kernel?
Does anybody have any idea, how to reach it?
Best regards, Agp

My questions is how to I setup the 2 network interface cards to act as one and load balance the traffic accross both interfaces?
This is simple link aggregation in System Preferences -> Network
Click the + button at the bottom and choose new Link Aggregate. Choose the existing interfaces (presumably en0 and en1) and you're set.
Note that this requires support in the switch the server is connected to (it needs to support LACP), and that you will bounce your network connection when you set this up (so don't do it when the server is actively servicing clients)
also I was wondering if it was possible to fail over AFP services, so if one server went down the other would pickup file services where it left off?
It's possible, but you need to be very careful with regards to data integrity. For example, typically each server is going to have a local directory (or directories) that are shared. If Server A fails and Server B takes over, how do you intend to ensure that Server B's data is up-to-date, especially with regard to files that might have been in use at the time?
It's a tricky problem to solve without putting the data on a shared storage device using something like XSAN to manage arbitration, and now you could be talking serious $$$s.
I'd recommend looking closely at your file serving needs and work out if it's necessary, or whether you could get by with dividing the load across servers (e.g. some sharepoints are on one server, other sharepoints on the other) so that only a subset of your users are impacted should one server fail.
File synchronization/replication is a major issue (read $$$$$) for a lot of companies.

Similar Messages

WAN load balancing question

Hello All,
I need some help on below.
- ISP-1 provided two routers (R1 and R2), each router connect to a different internet circuit (ISP-1 and ISP-2 circuits)
- Locally have a customer router (R3)
- Locally have a public DMZ (203.xxx.xxx.xxx/24)
Requirement:-
1. Incoming/Outgoing traffics to/from DMZ should via both circuits equally (Load Balance)
2. R3 need to know where to route to internet
3. When there is outage on either internet circuit, no outage should occur. All traffics will route on the working circuit
Attach diagram what i think it will work base on the requirement. But i am not sure how the actual router configuraiton should look likes.
If it will not work base on the diagram, please help advice how can it be done.
Appreciate your time.
Regards,
Christopher

Hello All,
I need some help on below.
- ISP-1 provided two routers (R1 and R2), each router connect to a different internet circuit (ISP-1 and ISP-2 circuits)
- Locally have a customer router (R3)
- Locally have a public DMZ (203.xxx.xxx.xxx/24)
Requirement:-
1. Incoming/Outgoing traffics to/from DMZ should via both circuits equally (Load Balance)
2. R3 need to know where to route to internet
3. When there is outage on either internet circuit, no outage should occur. All traffics will route on the working circuit
Attach diagram what i think it will work base on the requirement. But i am not sure how the actual router configuraiton should look likes.
If it will not work base on the diagram, please help advice how can it be done.
Appreciate your time.
Regards,
Christopher

How to divide equal load in Oracle Weblogic Cluster Node

Hello Friends..
I install Oracle weblogic 10.3.3.0 and oracle Forms [32 Bit] Version 11.1.1.3.0 (Production) on Two PC, PC-1 and PC-2.
I Create a cluster for load balancing and shifting the load from PC-1 to PC-2. Now I want to know which algorithm is best for equal load balance means i want to transfer equal load on both machine.
If PC-1 have 10 http request then next 10 request transfer to PC-2.
Please guide me.
Thanks,
Sachin

Hi Sachin
You need to have a load balancer or web server in front of your weblogic server cluster.
This is really a tunning excersise, so you need to try several options depending on the load of the enironment, however robin robin (default) should work for you.
You can see more details here:
Load Balancing in a Cluster
Best Regards
Luz

SMLG load balance

Dear Experts,
We are using logon groups for load balance. Logon quality is used to determine the next logon server.
We want to change this algorith with something like round robin. Each dialog instance should accept one user so user count will be identical on all dialog instances.
Any way to perform this?
best Regards

Dear Sez .
I am not sure about changing the algorithm to round robin as desired but we can improve poor distibution of user.
++++++++++++
RSRZLLG0 is the report that updates the data used by SMLG. RSRZLLG0
itself is called by SAPMSSY6 which is an automatically started report (aso-called 'autoabap', which will be started all five minutes. Or, to be
more exactly, will be started at the interval that is given in the
parameter rdisp/autoabaptime (default 300 seconds).
Please go to transaction SMLG, and than goto -> load distribution.
There you will see a response time of the individual application
servers.
1. Assign Heavy transaction user groups to the servers with more
computing power and memory. This will ensure that even if these users use the resource concurrently, they will not face performance issues
to a greater extent.
2. Estimating the optimum value for response time and logged in users is Difficult. But you can definitely base these values on the average
response of the server that is acceptable to the users and they can
work comfortably without performance issues. The number of users can
be based upon the situations that you have faced when :
a) n Number of users were logged in and the performance of the server was acceptable.
b) y Number of users were logged in and users started complaining
about the server response.
The limits that we discussed do influence the algorithm for load
balancing to some extent. But at the same time we cannot fully influencethe same. However you can try to implement the changes and further fine
tune the limits as per requirements.
Due to the large fluctuations in response times for each instance
then you should consider the changes in the logon load balancing
algorithm of note #51789 (Poor user distribution in logon distribution)
to give more weighting to the users than response time than default
for Quality values in SMLG to get more equal load balancing between
the instances.
Hope this information may / may not help you
Rgds

Service Request - Load balancing weight & TM labour schedule

What is Load balancing weight? How does it work, (I think it must be w.r.t the selecting resources for assigning the task, But how does it work, I am not getting the help menu in this)
How does the T&M labour schedule is managed
Regards

Hi,
1. I had some time and setup your config. Load Balancing seems to work fine for me. I tried to work with 4 different clients.
WHat I did to set it up:
# Failover RG for shared address
scrgadm -a -g proftp-srg -h mars,saturn
scrgadm -a -S -j hafast_r -g proftp-srg -l hafast
# Scalable RG for proftpd
scrgadm -a -g proftp-rg -y Maximum_primaries=2 -y Desired_primaries=2 -h mars,saturn -y RG_dependencies=proftp-srg
scrgadm -a -j proftp_r -g proftp-rg -t SUNW.gds -y Network_resources_used=hafast_r -y Port_l
ist=4443/tcp -x Start_command=/usr/local/sbin/proftpd -x Probe_command=/bin/true -y Scalable=true -y Load_balancing_policy=Lb_sticky_wild
I assume that the key is the Lb_sticky_wild setting. As proftp forks new processes for every connection and even does reconnects during operation with new ports this seems to be essential. Please try
2. It was not considered an excellent idea to configure ftp as a scalable service. Reason is that you now have network traffic load balanced. Question is: how do you configure shared storage. Do you have one (1) underlying global filesystem??? That could be a bottleneck. Check it out.
Regards
Hartmut
PS: BTW I used proftp 1.3.0

CSS11501 load-balancing IPv6 services

Hi,
I'm new to content networking and load-balancing.
I am setting up a new nameserver network site and have the following equipment:
- Cisco 2811
- Cicso CSS11501
- Cisco Catalyst 2960
This site will have 2 nameservers which I want to load-balance behind the CSS11501. The network will be setup like this:
Internet
|
Cisco 2811
|
CSS11501
|
Cisco 2960
|
Nameservers 1 & 2
The CSS11501 will be in routed mode and will have a publicly addressed VIP (eg, 203.x.x.x) for the DNS service and the name servers will be privately addressed (eg, 10.x.x.10 & 10.x.x.11). I'm hoping this will work fine and serve the requested IPv4 DNS requests.
I would like the nameservers to also operate on IPv6 and serve out IPv6 DNS requests but am not sure the CSS11501 can perform IPv6 service load-balancing.
My question is, does the CSS11501 support IPv6, load-balancing IPv6 service requests?
Thanks in advance.
Richard.

Gilles,
Thanks for the reply.
On another site I was looking at rolling out a Catalyst 6500 CSM module to do the exact same thing as the site I have the CSS11501's at, but it too does not support IPv6 from all I could find. Does the ACE provide all the functionality of the CSM plus IPv6?
Thanks.
Richard.

LRT224 Load Balance "dumb" DHCP router setup... HELP!

Hi
I'm trying to set up a LRT224 with two ADSL modems connected to one network with load balancing.
I'm not going to use vlan or vpn at all.
All I need it to do is be a "dumb" router that combines the speed of both Internet connections.
Working mode is set to Router
LAN 192.168.0.1/255.255.255.0 (I changed the LAN ip range)
WAN 1 and 2 gets IP, default gateway and DNS trough DHCP from the modems.
Wan 1: IP 192.168.1.65 Gateway 192.168.1.1 DNS 192.168.1.1
Wan 2: IP 192.168.2.38 Gateway 192.168.2.1 DNS 192.168.2.1
DHCP setup:
Device IP: 192.168.0.1
Subnet: 255.255.255.0
DHCP Server
Range 192.168.0.50/254
DNS: Use DNS from ISP
Dual Wan:
Load Balance
I'm no IT expert at but I have set up a few routers before that was close to "plug and play"
My problem is that connected computers indicate that they are connected to Internet, but I'm not able to access any websites.
When trying to use windows troubleshooter it indicates that there is a DNS problem.
I'm not even able to connect to the modems.
Installed latest firmware and done a fabric restore.
Network is built as follows (still working as I'm not running anything trough the lrt224 before I can get it to work)
ADSL Modem with built in DHCP and Switch --> Switch --> Ubiquiti Unifi AP --> User
Some of the AP's is connected via Ubiquiti NanoStation (wireless bridge between 4 houses, works great)
Any idea how to get this to work or do I have the wrong router?

I recommend:
Modem1 (192.168.1.1)=> LRT WAN1 (192.168.1.254)
Modem2 (10.10.10.1) => LRT WAN2 (10.10.10.254)
LRT WAN1 SN (255.255.255.0)
LRT WAN2 SN (255.255.255.0)
LRT WAN1 GW (192.168.1.1)
LRT WAN2 GW (10.10.10.1)
LRT WAN1 DNS (192.168.1.1)
LRT WAN2 DNS (10.10.10.1)
System Management => Load Balance
LRT DHCP Device IP (192.168.200.1)
LRT LAN => Switch => Ubiquiti Unifi AP => User
Nothing other than the LRT's connected to the modems.
If the modems DHCP is set to 192.168.1.x and 10.10.10.x subnet 255.255.255.0 then DHCP setting will work on the LRT WANs.
Please remember to Kudo those that help you.
Linksys
Communities Technical Support

Windows Server 2012 R2 - ADFS/Windows Network Load Balancing Converging Issue

Hello,
My name is Brandon. We have started upgrading our servers to Windows Server 2012 R2. We have some powerful servers for running ESXI 5.5 as the OS with the Guest Operating Systems as Windows Server 2012 R2. As far of our migrations/upgrades we have configured
ADFS 2012 R2 into a Server Farm with Windows Network Load Balancing to add redundancy in the event a server goes down.
I have been having issues with a Node with the Cluster getting stuck in the Status of Converging. The only way I have been able to get it back up is to restart the virtual server completely and it is temporary. When I first configure the Cluster the two
virtual servers get added to the Node with no problems and fully converge. However, after some time a node will end up in Converging and this takes Authentication for ADFS down as the nodes can not be contacted over Port 443.
Error: Host: server.domain.com Unable to connect to "server name"
System
Provider
[ Name]
Microsoft-Windows-NLB
[ Guid]
{F22AF71F-C4C3-425D-9653-B2F47B85DD30}
EventID
21
I have tried using 1 & 2 Virtual NICs on the machines and still end up with communication issues. Could someone assist me with why I am having this issue? This is not an issue with a firewall. If it was a firewall it would never communicate the first
time. Has anyone had experience with a similar configuration and how were you able to make it work?
Below is my configuration.
Static ARP Entry for Cluster IP Address has been added to our Layer 3 switch.
Physical Server 1:
ESXI 5.5 HOST
1 NIC CONNECTED (shared with virtual guest)
IP ADDRESS: 192.168.0.5
SUBNET: 255.255.255.0
DGW: 192.168.0.1
Virtual Server 1 (Guest OS)
Physical Server 2:
ESXI 5.5 HOST
1 NIC CONNECTED (shared with virtual guest)
IP ADDRESS: 192.168.0.6
SUBNET: 255.255.255.0
DGW: 192.168.0.1
Virtual Server 2 (Guest OS)
Virtual Servers
Virtual Server 1
MS SERVER 2012 R2 (VIRTUAL)
NLB NODE 2
VIRTUAL NETWORK ADAPTERS
VNIC1 IP ADDRESS 192.168.0.10
SUBNET: 255.255.255.0
DGW: 192.168.0.1
VNIC 2 (NLB)
IP ADDRESS: 192.168.0.11
SUBNET: 255.255.255.0
Virtual Server 2
MS SERVER 2012 R2 (VIRTUAL)
NLB NODE 2
VIRTUAL NETWORK ADAPTERS
VNIC1
IP ADDRESS 192.168.0.20
SUBNET: 255.255.255.0
DGW: 192.168.0.1
VNIC 2 (NLB)
IP ADDRESS: 192.168.0.21
SUBNET: 255.255.255.0
Cluster Configuration/Properties
CLUSTER PROPERTIES CLUSTER IP: 192.168.0.30
CLUSTER SUBNET: 255.255.255.0
FULL INTERNET NAME: FS.DOMAIN.COM
CLUSTER OPERATION MODE: MULTICAST
PORT RULES:
CLUSTER IP ADDRESS
START
END
PROTOCAL
MODE
PRIORITY
LOAD
AFFINITY
ALL
80
80
BOTH
MULTIPLE
EQUAL
NONE
ALL
443
443
BOTH
MULTIPLE
EQUAL
NONE
CLUSTER NODES:
1.) SERVER1.DOMAIN.COM
a. IP: 192.168.0.11
2.) SERVER2.DOMAIN.COM
a. IP: 192.168.0.21

Hi,
According to your description, my understanding is that：2 ESXI 5.5 physical devices (192.168.0.5 and 192.168.0.6), each of them has a virtual WS 2012 R2(192.168.0.10 and 192.168.0.20). Cluster the 2 virtual servers successfully, but they corrupt with event
ID 21, and a restart of virtual device will resolve this problem temporarily.
Event ID 21 means that NLB failed to converge due to inconsistencies in the port rules between this host and cluster host. This will occur if the number of port rules or the type of port rules are different between hosts.
Ensure that all NLB hosts have identical port rules. Detailed steps you may reference:
Event ID 21 — NLB Port Rules Configuration
https://technet.microsoft.com/en-us/library/dd364034%28v=ws.10%29.aspx?f=255&MSPPError=-2147217396
Best Regards,
Eve Wang
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact
[email protected]

Windows Server 2012 R2 - Windows Network Load Balancing Converging Issue

Hello,
My name is Brandon. We have started upgrading our servers to Windows Server 2012 R2. We have some powerful servers for running ESXI 5.5 as the OS with the Guest Operating Systems as Windows Server 2012 R2. As far of our migrations/upgrades we have configured
ADFS 2012 R2 into a Server Farm with Windows Network Load Balancing to add redundancy in the event a server goes down.
I have been having issues with a Node with the Cluster getting stuck in the Status of Converging. The only way I have been able to get it back up is to restart the virtual server completely and it is temporary. When I first configure the Cluster the two
virtual servers get added to the Node with no problems and fully converge. However, after some time a node will end up in Converging and this takes Authentication for ADFS down as the nodes can not be contacted over Port 443.
Error: Host: server.domain.com Unable to connect to "server name"
System
Provider
Name]
Microsoft-Windows-NLB
Guid]
{F22AF71F-C4C3-425D-9653-B2F47B85DD30}
EventID
21
I have tried using 1 & 2 Virtual NICs on the machines and still receive this error even if only 1 VNIC is assigned to the virtual machine. Could someone assist me with why I am having this issue? Has anyone had experience with a similar configuration
and how were you able to make it work?
Below is my configuration.
Static ARP Entry for Cluster IP Address has been added to our Layer 3 switch.
Physical Server 1:
ESXI 5.5 HOST
1 NIC CONNECTED (shared with virtual guest)
IP ADDRESS: 192.168.0.5
SUBNET: 255.255.255.0
DGW: 192.168.0.1
Virtual Server 1
Physical Server 2:
ESXI 5.5 HOST
1 NIC CONNECTED (shared with virtual guest)
IP ADDRESS: 192.168.0.6
SUBNET: 255.255.255.0
DGW: 192.168.0.1
Virtual Server 2
Virtual Servers
Virtual Server 1
MS SERVER 2012 R2 (VIRTUAL)
NLB NODE
2 – VIRTUAL NETWORK ADAPTERS
VNIC1
IP ADDRESS 192.168.0.10
SUBNET: 255.255.255.0
DGW: 192.168.0.1
VNIC 2 (NLB)
IP ADDRESS: 192.168.0.11
SUBNET: 255.255.255.0
Virtual Server 2
MS SERVER 2012 R2 (VIRTUAL)
NLB NODE
2 – VIRTUAL NETWORK ADAPTERS
VNIC1
IP ADDRESS 192.168.0.20
SUBNET: 255.255.255.0
DGW: 192.168.0.1
VNIC 2 (NLB)
IP ADDRESS: 192.168.0.21
SUBNET: 255.255.255.0
Cluster Configuration/Properties
CLUSTER PROPERTIES
CLUSTER IP: 192.168.0.30
CLUSTER SUBNET: 255.255.255.0
FULL INTERNET NAME: FS.DOMAIN.COM
CLUSTER OPERATION MODE: MULTICAST
PORT RULES:
CLUSTER IP ADDRESS  START END PROTOCAL MODE   PRIORITY LOAD  AFFINITY
ALL    80 80 BOTH  MULTIPLE  ..  EQUAL  NONE
ALL    443 443 BOTH  MULTIPLE  ..  EQUAL  NONE
CLUSTER NODES:
1.) SERVER1.DOMAIN.COM
a. IP: 192.168.0.11
2.) SERVER2.DOMAIN.COM
a. IP: 192.168.0.21

Thank you for your response. It took me a while to figure it out, but the whole issue was related to the type of Virtual Network Adapter I was selecting.
I changed the network adapter from E1000 to VMXNET 3 and have not had a single error in the event logs or Windows NLB.
I read somewhere that VMXNET 3 is preferred for Windows Server 2012 R2.
https://communities.vmware.com/thread/433792
Leyuka       May 23, 2013 6:14 AM
"Just a help for everyone with this problem :
After 10 days of research for our virtual datacenter behind a vcloud as iias , i found a solution .
I only run windows 2012 server .
Install vmware tools , remove e1000 network card after a vm stop, add a card same vswitch etc BUT with a vmxnet3 TYPE . DONT USE DEFAULT CARD
Start and enjoy this solution . E1000 and E1000e are just unstable in windows8 / windows 2012 , the network card reset randomly with or without heavy IO. No log in windows , and as a vcloud user i don"t have esxi logs (damn i don't like cloud) and provider
don"t know why ..."

Network Load Balancing (NLB)

Dear Support,
I have install NLB feature on two windows 2008 R2 servers both have configured with IIS. However I have tested both are working fine and both are accepting the request successfully.
Since we have performed load test the load balance between the server is not equal
Host 1
CPU Utilization =53%
Host 2
CPU Utilization = 10%
Please suggest.
Regards
Naveed
Naveed Amir

Hi naveed,
This is normal. NLB is using the node that has the fastest response / highest priority and/or your configuration you can find more info about this here :
Network Load Balancing Technical Overview
http://technet.microsoft.com/en-us/library/bb742455.aspx
Greetings, Robert Smit Follow me @clustermvp http://robertsmit.wordpress.com/ “Please click "Vote As Helpful" if it is helpful for you and Proposed As Answer” Please remember to click “Mark as Answer” on the post that helps you

Unequal Load Balancing with EIGRP over 4 Wireless networks

We are trying to load-balance on 4 interfaces that have unequal bandwidths. The setup looks like this
8 Computers -> Empty Config Switch -> 3560 Router\Switch -> 4x Wireless Radios on different frequencies - networks -> 3560 Router\Switch->Empty Config Switch -> 8 Computers
We have EIGRP setup and the bandwidths defined, and the routes are showing proper share counts, but once we start adding traffic to the network, they all jump on one of the links. The config and everything looks right, its just not working. I have tried switching to different cef algorithms. Removed the vlans . I made them equal cost and they did the same thing. Its like EIGRP does not want to load balance.
When i did this config with static routes or as OSPF, it actually load balanced them, but I'm stuck with a 1:1 share ratio. If i could control the ratio, then that would be an acceptable solution.
Any ideas on what could be causing this?
Code:
Routing entry for 192.168.104.0/24
Known via "eigrp 10", distance 90, metric 13312, type internal
Redistributing via eigrp 10
Last update from 192.168.2.4 on Vlan2, 00:04:25 ago
Routing Descriptor Blocks:
* 192.168.9.4, from 192.168.9.4, 00:04:25 ago, via Vlan9
      Route metric is 51712, traffic share count is 31
      Total delay is 20 microseconds, minimum bandwidth is 50000 Kbit
      Reliability 255/255, minimum MTU 1500 bytes
      Loading 1/255, Hops 1
    192.168.5.4, from 192.168.5.4, 00:04:25 ago, via Vlan5
      Route metric is 13312, traffic share count is 120
      Total delay is 20 microseconds, minimum bandwidth is 200000 Kbit
      Reliability 255/255, minimum MTU 1500 bytes
      Loading 1/255, Hops 1
    192.168.3.4, from 192.168.3.4, 00:04:25 ago, via Vlan3
      Route metric is 26112, traffic share count is 61
      Total delay is 20 microseconds, minimum bandwidth is 100000 Kbit
      Reliability 255/255, minimum MTU 1500 bytes
      Loading 1/255, Hops 1
    192.168.2.4, from 192.168.2.4, 00:04:25 ago, via Vlan2
      Route metric is 13312, traffic share count is 120
      Total delay is 20 microseconds, minimum bandwidth is 200000 Kbit
      Reliability 255/255, minimum MTU 1500 bytes
      Loading 1/255, Hops 1
3560_Switch_1#show int Fa 0/1 | inc packets/sec
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
3560_Switch_1#show int Fa 0/2 | inc packets/sec
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
3560_Switch_1#show int Fa 0/3 | inc packets/sec
5 minute input rate 17111000 bits/sec, 2545 packets/sec
5 minute output rate 13872000 bits/sec, 2251 packets/sec
3560_Switch_1#show int Fa 0/4 | inc packets/sec
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
3560_Switch_1#show ip cef exact-route 192.168.101.57 192.168.104.57
192.168.101.57 -> 192.168.104.57 => IP adj out of Vlan5, addr 192.168.5.4
Here is the config.
Code:
ip cef load-sharing algorithm universal 00123456
interface FastEthernet0/1
switchport access vlan 2
bandwidth 200000
delay 1
spanning-tree portfast
interface FastEthernet0/2
switchport access vlan 3
bandwidth 200000
delay 1
spanning-tree portfast
interface FastEthernet0/3
switchport access vlan 5
bandwidth 200000
delay 1
spanning-tree portfast
interface FastEthernet0/4
switchport access vlan 9
bandwidth 200000
delay 1
spanning-tree portfast
interface GigabitEthernet0/1
description USER PORT
switchport access vlan 100
spanning-tree portfast
interface Vlan2
bandwidth 200000
ip address 192.168.2.1 255.255.255.0
delay 1
interface Vlan3
bandwidth 100000
ip address 192.168.3.1 255.255.255.0
delay 1
interface Vlan5
bandwidth 200000
ip address 192.168.5.1 255.255.255.0
delay 1
interface Vlan9
bandwidth 50000
ip address 192.168.9.1 255.255.255.0
delay 1
interface Vlan100
description User Data
ip address 192.168.101.1 255.255.255.0
router eigrp 10
maximum-paths 8
variance 15
network 192.168.2.0
network 192.168.3.0
network 192.168.5.0
network 192.168.9.0
network 192.168.101.0

Yup, that was the first cef algorithm I had tried.   ip cef load-sharing algorithm include-ports source destination
I tried all of the different types.
Also, I was sending data trough iperf from 4 computers + 1 comp steaming video on one network to 5 computers on another network. In any case of source or destination, it should have switched over. The odds of it all going on Vlan 5 is ~ 0.6%   Restarting the router sometimes places it all on a different vlan, but in any case its all or nothing.

MPLS TE equal or unequal load balancing doesn't work? - step2

Previous question in thread:
Dear Sir!
I've two MPLS TE tunnels from one PE to another PE.
And there are traffic share count between them
(as tunnel mpls traffic-eng load-share command define).
But in real life all traffic from the same source to the same destination go through only one tunnel
(as CEF define - i.e. how sh ip cef exact-route says).
PEs are 3660 platforms with c3660-jk9o3s-mz.123-8.T
installed.
How can I correct this problem?
But this answer does not solved my issue:
hritter - Network Consulting Engineer, CISCO SYSTEMS, CCIE
Aug 4, 2004, 7:20am PST
This is expected behavior since CEF is used at the head end to perform label imposition. I wouldn't recommend changing the default bahavior to per=packet loadsharing since this could lead to of of sequence packets, which could lower the overall performance.
Hope this helps,
so my secound question:
Dear Sir!
I'm agree with you as MPLS TE tunnels are opened from PE to PE, so CEF does it work.
But if I open this tunnels from P to PE, ONLY ONE of this tunnels are used instead of load-sharing, if traffic go from one source (of site1 of VPN1) to the same destination (located at site2 of VPN1).
Why? Packet through P-devices swithes by labels, so I mean that CEF cannot does src-dst load sharing?
My problem are that I must to do load sharing between this two tunnels in the case above.
Q: How can I solve this problem?
Best regards,
Maxim Denisov

The per session load-balancing is also used by MPLS when multiple paths are available. Changing this behavior to per-packet is still not recommended.
Hope this helps,

Network Load Balancing not failing over properly

I have 2 MS 2012 servers setup in a NLB unicast configuration, with 2 NICs each on the same subnet. When I take down the second server (and only the second server) the FQDN goes offline. Below are the ipconfigs for each server. Any help
would be greatly appreciated!
Ethernet adapter Data NIC 192.168.220.172:
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Intel(R) I350 Gigabit Network
#4
   Physical Address. . . . . . . . . : 6C-3B-E5-B2-48-60
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.220.172(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.220.1
   DNS Servers . . . . . . . . . . . : 192.168.220.100
                                       192.168.200.10
   NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Cluster NIC:
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Broadcom BCM57810 NetXtreme II
DIS VBD Client) #67
   Physical Address. . . . . . . . . : 02-BF-C0-A8-DC-AA
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.220.171(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   IPv4 Address. . . . . . . . . . . : 192.168.220.170(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.220.1
   DNS Servers . . . . . . . . . . . : 192.168.220.100
                                       192.168.200.10
   NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Data NIC 192.168.220.174:
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : HP FlexFabric 10Gb 2-port 533FLR-
r #54
   Physical Address. . . . . . . . . : A0-D3-C1-F6-96-08
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.220.174(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.220.1
   DNS Servers . . . . . . . . . . . : 192.168.220.100
                                       192.168.200.10
   NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Cluster NIC:
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : HP NC523SFP 10Gb 2-port Server Ad
   Physical Address. . . . . . . . . : 02-BF-C0-A8-DC-AA
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.220.173(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   IPv4 Address. . . . . . . . . . . : 192.168.220.170(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.220.1
   DNS Servers . . . . . . . . . . . : 192.168.220.100
                                       192.168.200.10
   NetBIOS over Tcpip. . . . . . . . : Enabled

Hi MS DEF,
A second network adapter is required to provide peer-to-peer communication between cluster hosts. Please isolate your heartbeat network. With unicast when cluster is connected
to a switch, incoming packets are sent to all the ports on the switch, which can cause switch flooding, please confirm you have setup your switch correct, you can refer the following Cisco Switch related unicast configuration.
The Cisco switch unicast related information:
How to configure Microsoft Network Load Balancing on two switches
https://supportforums.cisco.com/discussion/11918276/how-configure-microsoft-network-load-balancing-two-switches
More information:
Selecting the Unicast or Multicast Method of Distributing Incoming Requests
http://technet.microsoft.com/en-us/library/cc782694(v=ws.10).aspx
An Optimal Network Load Balancing (NLB) Configuration
http://blogs.technet.com/b/clint_huffman/archive/2007/10/08/an-optimal-network-load-balancing-nlb-configuration.aspx
Selecting the Unicast or Multicast Method of Distributing Incoming Requests
http://technet.microsoft.com/en-us/library/cc782694(v=ws.10).aspx
I’m glad to be of help to you!
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Network Load balancing for Server 2003 and Server 2012

Our environment currently has 2 web servers running Windows Server 2003 with Network Load Balancing. We are looking to update the servers to Windows Server 2012. Is it possible to add Windows Server 2012 into the Windows Server 2003 Network Load
balancing cluster? This way we could bring up 2 new servers add them into the network load balancing and then take out the 2003 servers without disrupting our production.
Any thoughts or suggestions on how to make this work properly?

Hi,
You can upgrade an existing Network Load Balancing (NLB) cluster to Windows Server 2008, Windows Server 2008 R2, or Windows Server 2012 by taking the entire cluster offline
and upgrading all the hosts, or you can leave the NLB cluster online and perform a rolling upgrade. A rolling upgrade entails taking individual cluster hosts offline one at a time, upgrading each host, and returning the host to the cluster. You continue upgrading
individual cluster hosts until the entire cluster is upgraded. A rolling upgrade allows the cluster to continue running during the upgrade.
The related KB:
Upgrading an Existing Network Load Balancing Cluster
http://technet.microsoft.com/en-us/library/cc731691(v=ws.10).aspx
Hope this helps.
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are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.

Server Load Balance in one network using CSM Cat6509

I have 2 Web Servers with real IP address 10.1.12.61 and 10.1.12.62 (subnet mask 255.255.255.0). The virtual IP address configured on CSM is 10.1.12.100
I also have 2 Application Servers with real IP address 10.1.12.81 and 10.1.12.82 (subnet mask 255.255.255.0). The virtual IP address is 10.1.12.120.
Users will access Web server using the virtual IP address (10.1.12.100) so that the traffic will be load balanced.
But there is also requirement that those Web Servers access Application Servers using IP address 10.1.12.120 so that the traffic will be load balanced as well.
Is this requirement feasible?
Can CSM load balance between servers in one network address?

Budiman,
I am building the same situatiuon here. But the most simple part seems not to be working. I have two webservers in the same subnet as my VIP.
The clients can be everywhere in every subnet.
This is what happens:
btpebgw70#sh mod contentSwitchingModule 9 conns
prot vlan source destination state
In TCP 401 192.6.53.42:1901 151.183.58.196:80 ESTAB
Out TCP 401 151.183.58.196:80 192.6.53.42:1901 ESTAB
ok this is good but:
btpebgw70#sh mod contentSwitchingModule 9 reals detail
151.183.58.201, ORBIS, state = OPERATIONAL
conns = 0, maxconns = 4294967295, minconns = 0
weight = 8, weight(admin) = 8, metric = 0, remainder = 0
total conns established = 58, total conn failures = 58
the failures have the same value as the established. Can you send me your config part of the csm because I am getting tired of this. Please email to [email protected]
Thanks in advance!

Network equal load balance

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