Cisco Switching/Routing :: Nexus 7K Load Balancing On LACP

Jul 26, 2012

I have conneccted a server with LACP on Nexus extender. I am starting different file copy from diffferent sources to this server, it does not load balance.
 
source addresse: 192.168.30.3  /  192.168.30.1
destination: 192.168.30.2

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Cisco Switching/Routing :: Nexus 7K Is Not Load Balancing

Aug 5, 2012

We have Nexus 7K on production. 7K chasis is not load balancing with non-cisco devices with etherchannel or LACP..I have tried all load balancing algorithms but in vain. [code]

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Cisco Switching/Routing :: Nexus 5548UP Switches - Load Balancing?

Mar 10, 2013

The best option for load balancing between 2 X Cisco nexus 5548UP switches located at one site and connecting to 2 X Cisco nexus 5548UP switches located at another site.
 
The sites are connected via a 1GB fibre connection. I am unable to use GLBP until GLBP is supported in further software releases.

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Cisco Switching/Routing :: 6509 - Load Balancing Nexus Switches

Jan 24, 2013

I am trying to understand what load balancing method is used on a port channel on a Nexus switch . I have a server connected by a VPC to two Nexus switches. The nexus switches are only acting as layer 2 switches. I have a 6509 connected via a upstream link that does all of the routing for my VLANS. If  have a server connected to the Nexus switches and it talks to a server on my 6509 what load balancing happens on the Nexus going across VPC 27 which is a layer 2 trunk going up to my 6509. Is it done on layer 2 or layer 3 flows?
 
My Nexus shows the default load balancing configurations
 
Port Channel Load-Balancing Configuration:System: source-dest-ip
Port Channel Load-Balancing Addresses Used Per-Protocol:Non-IP: source-dest-macIP: source-dest-ip source-dest-mac

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Cisco Switching/Routing :: Nexus 2248 / Port-Channels On N2K Not Load Balancing?

Sep 5, 2012

I have a dual-homed fabric (Nexus 2248 dual attached to two Nexus 5020's via vPC).  On this Nexus 2248 is a server that has a four port LACP etherchannel.  The ports do not appear to be load balancing correctly.  The output below shows the four ports in use and it clearly shows port e138/1/10 as getting the most use.  When I use the "show port-channel load-balance forwarding-path..." command on either of the vPC switches for various source and destination IP's that use this link, it shows them correctly load-balancing across the four ports.  But we do not see this when looking at stats on both the server side and the switch side. 
 
dc5020-3g# sh int e138/1/10,e138/1/12,e138/1/14,e138/1/16 | i seconds
  30 seconds input rate 552 bits/sec, 69 bytes/sec, 0 packets/sec
  30 seconds output rate 130120 bits/sec, 16265 bytes/sec, 161 packets/sec
  Load-Interval #2: 5 minute (300 seconds)
  30 seconds input rate 40 bits/sec, 5 bytes/sec, 0 packets/sec

[code]....
 
**************** Config info below.  This is a vPC pair and the port configs are identical on both switches so I'm only showing the configs for one switch to keep it simple.
 
dc5020-3g# sh port-channel load-balance
 Port Channel Load-Balancing Configuration:
System: source-dest-ip
 Port Channel Load-Balancing Addresses Used Per-Protocol:
Non-IP: source-dest-mac
IP: source-dest-ip source-dest-mac

[code]....

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Cisco Switching/Routing :: 5020 / LACP Between Nexus 5K (VPC) And HP Servers?

Jan 22, 2012

I have two N5K (5020) switches with NX-OS - 5.0(3)N2(1). These two switches form VPC domain: peer-link = 2*10Gb ports (1/17-18) and peer-keepalive link over managements ports.Also I have two HP servers with two 10 Gb ports on each server.Each server conected by one link to each N5K switch (1/9-10). N5K downlinks configured as access ports with LACP Active mode.There is only one VLAN (1).When "no shut" command entered on N5K access ports - ports going in "not connected" status, begin flap and then going in "linkFlapErrDisabled" state.In attach - "sh run" from N5K.

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Cisco Switching/Routing :: Nexus 5548 VPC To Dual NIC Server With LACP

Apr 1, 2012

We are planning to have attach topology with nexus 5548 using vpc. Let me know if this i possible. I want to configure dual NIC linux server using LACP active mode to connect to two 5548 in VPC for redudancy as well as use of full access layer bandwidth. On nexus this will be access port in single port channel in single VPC link.

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Cisco Switching/Routing :: LACP Support On Nexus 2000 With 7000 As Parent Switch

Jun 13, 2011

Does the LACP will be supported on Nexus 2000 host interfaces when parent switch is Nexus 7000?

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Cisco Switching/Routing :: 881-K9 Load Balancing And Static NAT

Dec 3, 2012

i'm going to configure a 881-k9 with:

- Ethernet 0/0 LAN (Private Address)
- Ethernet 0/1 ISP1 (Public Address 1)
- Ethernet 0/2 ISP2 (Public Address 2)
  
find some configuration example to:

- have load balancing over the two ISP connection, used to connect to Internet

- configure Static NAT to bind:
- TCP 443
- TCP 1723on ISP1 e ISP2 Interface to a LAN Address (SBS2008 Server)

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Cisco Switching/Routing :: 7609 Portchannel Load-Balancing

Oct 23, 2012

I'm trying to make MGSCP solution. I have Cisco 7609 with following configuration:

Mod Ports Card Type                              Model             
--- ----- -------------------------------------- ------------------
  3    8  CEF720 8 port 10GE with DFC            WS-X6708-10GE     
  5    5  Route Switch Processor 720 10GE (Activ RSP720-3CXL-10GE  
  7   24  CEF720 24 port 1000mb SFP              WS-X6724-SFP      
  8   24  CEF720 24 port 1000mb SFP              WS-X6724-SFP      
  9   48  CEF720 48 port 10/100/1000mb Ethernet  WS-X6748-GE-TX.

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Cisco Switching/Routing :: 4900M Etherchannel Load Balancing

Dec 18, 2012

We have to cisco WS-C4900M with Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500e-IPBASE-M), Version 12.2(53)SG5, RELEASE SOFTWARE (fc1).We have four gigabit link connected between those two switches.We have create a LACP port channel with those four ports on both switches. Ether-channel is up and running and defined with a load-balancing method of src-dst-ip.But when we test the load-balancing, it's not using the src-dst-ip rule with the XOR: [code]

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Cisco Switching/Routing :: Possible Load Balancing On 2821 Router?

Apr 15, 2012

I have a 2821 Router, with a VWIC2-2MFT card in it, with two T1s going into that card.  The two T1s are a bundled MPLS line.
 
I then have a cable modem connection going into the gigabit Ethernet GE 0/1 port on the router.
 
Right now, the cable modem provides a backup connection in case the T1s go down.
 
What I was wondering is if there was a way to 'combine' the bandwidth from the two T1s with the cable modem?

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Cisco Switching/Routing :: 3560 - Redundant Lan With Load Balancing

Sep 25, 2012

How to set up redundant LAN Ring topology with load balancing for a cisco catalyst 3560 platform.

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Cisco Switching/Routing :: CSS 11501 - Configuring CSS Content / Load Balancing

Feb 3, 2012

I would like configure a CSS content, that uses the sorry service principal in an advanced way.

I am familiar with the primary Sorry Server command and see that the CSS would send all connections to the named service that is configured as the primary Sorry Server.

What I would like to do is to configure the CSS, so that once it’s decided it’s in a “sorry” state (all the services that are configured with “add service” are down) that it load balances to a different set of services.

To explain what I’ve been trying to do in the form of configuration on the CSS, I’ve pasted some pretend config below.

Connections come into IP address 1.1.1.1, which normally get load balanced between  9.1.1.1, 9.1.1.2 and 9.1.1.3.

If 9.1.1.1, 9.1.1.2 and 9.1.1.3 are all down, the sorry service is used and the CSS starts passing traffic to 1.1.2.1, which I want it to load balance between  9.1.2.1, 9.1.2.2 and 9.1.2.3.

The order that I have applied the config, is different to the below, as I set out to configure in this order: secondary services, secondary content, sorry service, primary services, primary content.

The order of the config below is different, because I wanted it in the order that the traffic flows and the CSS won’t take the config in that order!

The wall I have ran into, is that when I try to create the service I have named “Sorry Service”, I get the following error:

%% Service IP Address conflicts with a local I/F, VIP, mg mt route.

[Code] .....

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Cisco Switching/Routing :: Static Load Balancing On 3650-X IP Base?

Nov 22, 2011

Does 3650-X IP Base support Static Load Balancing or i should upgrade to ip service SW ?

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Cisco Switching/Routing :: 4500X EtherChannel Symmetric Load Balancing

May 8, 2013

I have probem with symmetric load balancig, in case when both ends of ether channel are on the sam switch (we are using VLAN translation).We need to create L2 port channel with both ends on same switch (Cisco WS-C4500X-24X-ES), for example:Po1 – Gi0/1, Gi0/3 (one end of port channel )Po2 – Gi0/2, Gi0/4 (other end of port channel)On ports in Po2 we will configure VLAN mapping.My question is what is the best ether-channel load-balancing scheme with wich we can accomplish full symmetry in both directions? For example, if traffic in one direction goes through Gi0/1 (member of Po1), in other direction also must go through Gi0/1. This is required because we need to connect four appliances for DPI (they are full L2 transparent) and traffic through each appliance need to be symmetric.
 
I can set-up src-ip, dst-ip, src-dst-ip etc. load balancing, but, actually I need src-ip on Po1 and dst-ip on Po2. Is there any way to set up different load balancing mechanism for different ether channel on same switch (4500X).

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Cisco Switching/Routing :: 6500 Will Load-balancing Work As Intended

Sep 27, 2012

If the load balancing is set to src-dst-ip, will a layer 2 switch forward based on that information? Particularly talking about a 6500, with trunk interfaces, since those packets never go to the layer 3 engine, will the load-balancing work as intended?

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Cisco Switching/Routing :: C2960 - Port Channel Load Balancing?

Apr 15, 2013

I have an inquiry about a configuration I deploy in a C2960 switch. I have configured a ether channel with 8 ports, the load balanced method is source mac address. The bundling protocol is LACP.
 
I have found the ether channel is not balanced as I expect. One of the eight interfaces is congested.
 
Code...

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Cisco Switching/Routing :: 6509 / Default Route Load Balancing?

Nov 29, 2012

Right now I have 2 default routes load balancing 100MB internet links.  This is on my 2 6509's.
 
ip route 0.0.0.0 0.0.0.0 10.47.2.1 (FWSM)
ip route 0.0.0.0 0.0.0.0 10.47.2.250 (5510)
 
Is there anyway to make the first default route take more of the traffic, like 60/40 or 70/30?Any program that I could use to see top users going through the FWSM?

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Cisco Switching/Routing :: 1921 Load Balancing Over 3 ADSL Lines

Aug 22, 2012

I have the requirement to provide a Cisco Router with 3 x ADSL lines (768k) to increase the internet speed.PPP multilink is not supported from the ISP.
 
Is it possbile to distribute the traffic between this three ADSL lines?How can I configure this?
 
I have the following hardware configuration:
 
1 x  CISCO1921-SEC/K9
2 x  EHWIC-VA-DSL-B
 
The third ADSL line is connected over an ADSL modem at one fixed Router Gigabit interface.

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Cisco Switching/Routing :: 1941 Auto Failover With Load Balancing?

Jan 27, 2013

One of our customer has  3 ISP Line, out of which Two are Broadband and One is Leased Line.   All 3 ISP interfaces are Etherent.
 
Now, they want Auto Failover with Load balancing among these 3 ISP lines.
 
Can we do same implementation in Cisco 1941 Router??  What licenses required in router for same?

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Cisco Switching/Routing :: 6509 - Etherchannel Load Balancing Between Two Switches

Mar 5, 2012

Is it possible to use two different load balancing methods at each end of a port-channel between two switches?
 
We have a Cisco 6509 at one end of the port-channel and a Cisco blade switch 3020 at the other end.  Right now, we are using "src-dst-ip" at both end of the port-channel.  We would like to change this.  That is, we would like the #3020 switch to use "src-dst-ip" while the 6509 switch should use the "src-dst-port". 
  
Why we want to do this, the reason is that we have FWSMs on the 6509.  I've read that by configuring "src-dst-port" on the 6509, one can get a better performance of traffic going through the FWSM.  However, the issue is that the 3020 switch does not support "src-dst-port". 

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Cisco Switching/Routing :: Asa 5520 Load Balancing Based Upon Http Or Https

Mar 5, 2012

I have a customer who wants his new ASA-5520 to load balance out-going traffic between 2 ISPs, fairly normal request. Now here's the twist. He wants to separate traffic based upon the protocol used, http to one ISP, https to the other.

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Cisco Switching/Routing :: 3750X Port Channel Load Balancing Protocols

Jan 15, 2012

What I am attempting to achieve is to aggregate trunk ports out of a VMware server into a single logical connection to give as much bandwidth as possible, the switches are 3750X and are three stacked together with the server connections spread across the stack. What I am not sure about is if two port channel load balance protocols can happy co-exist on the switch, by default the switch is using MAC address load balancing and Vmware wants to use IP Source load balancing. As other trunks and channels exist on the switch I don't want to make a change that will affect the other live connections if changing this is a global setting and not local on the channel.

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Cisco Switching/Routing :: 4500E - Changing Default Etherchannel Load Balancing Algorithm

Mar 25, 2012

Will there be some pause in traffic on formed ether channel interfaces (4500E switch), when i will change the default ether channel load balancing method to src-dst-port (or any other non-default method)?

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Cisco Switching/Routing :: Created Load Balancing Between Two Catalyst 3550 On Couple Of Vlans

Feb 24, 2012

I am testing on lab equipment (2 Catalyst 3550 and 1 Catalyst 3560) HSRP version 1 and 2.I successfully created a load balancing between the two Catalyst 3550 on a couple of vlans (11 and 12) on ver 1
 
now, just adding the command "standby xx version 2" my hosts on the 2 vlans are completely unable to ping the virtual IP def. gw on debugging i checked that msgs are exchangedthe two cat 3550 are seeing each other on HSRP (active / standby roles)the real ip addresses are pingable rebooted the swiches (just as a last resort try)deleted arp chache on hostsremoved the auth on hsrp  all of this no effect.
 
i also tried to modify the priority on the cat 3560 (before he was on both vlans in standby) to make it the active one and with the same config it worked flawlessly.
 
My only idea is that there is a bug on CATs 3550 (IOS: c3550-ipservicesk9-mz.122-55.SE4.bin) [code]

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Cisco Switching/Routing :: Nexus 5010P-BF Does Not Load System Image

Apr 8, 2013

We have a N5K-C50510P-BF. When these nexus starts that didn't booting any further than the kickstart. Here's the boot sequence log
  
User break into bootloader
Loader Version pr-1.3
loader>

[Code]....

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Cisco Switching/Routing :: Nexus 7000 Process Platform Causes About 50% CPU Load?

Feb 26, 2013

we observe that the process platform causes about 50% cpu load of our Nexus 7010.Could not find any information for what this process is responsible to find out the root cause of the high cpu load.

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Cisco Switching/Routing :: Nexus 5010 Won't Load System Image - Stuck At Boot Prompt

Sep 29, 2012

I have a 5010 that simply won't load any system image.  Loads the kickstart image just fine, but once at the Switch(boot)# prompt just give me garbage when I enter "load bootflash:n5000-uk9.5.1.3.N2.1b.bin Restarting system.
 
Loader Version pr-1.3
loader> dirbootflash:  lost+found  n5000-uk9-kickstart.5.2.1.N1.1b.bin  n5000-uk9.5.2.1.N1.1b.bin  n5000-uk9-kickstart.5.1.3.N2.1b.bin  n5000-uk9.5.1.3.N2.1b.bin

[Code]....

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Cisco Switching/Routing :: LACP Fast Updates On 3750s?

Sep 5, 2012

I've got LACP-enabled port-channels between a Cisco 3750 stack and a few different switches (some Cisco 3750s and some Juniper EX2200s).  The Ciscos are all sending slow LACP updates, the Junipers are sending fast LACP updates (but the Cisco they connect with is responding with slow LACP updates).
 
I have a couple of questions:
 
1) what are the pros and cons of slow vs fast updates?  my research has led me to the conclusion that fast updates are better for network resiliency as long as you have plenty of bandwidth overhead (which I do at the moment).  is there anything to add to this conclusion?
 
2) is there any way to configure the Cisco 3750s for fast updates?

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Cisco Switching/Routing :: Configuring 4507R For LACP And Trunking?

Apr 3, 2008

We're trying to configure our Cisco 4507 (Supervisor Engine IV) to allow a new Dell server with a pair of Broadcom 5708 GigE NIC's to aggregate its NIC's to give us a 2gbps link to the switch.
 
So far we seem to have got the team and LACP up and enabled, but the adaptor that the Broadcom Admin Util creates for the team is only showing a 1gbps connection where I would have expected it to show as 2gbps.
 
The individual NICs show as connected at 1gbps. We're not Cisco experts so are struggling on how to get the 2 NICs to aggregate.
 
On the server side we've done nothing other than create a team using 802.3ad LINk Aggregation using LACP.
 
This is what I think the relevent output from "sho conf" is, more available if needed.
 
version 12.2
boot system flash bootflash:cat4000-i9s-mz.122-18.EW1.bin
!
interface Port-channel2

[Code].....

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Cisco Switching/Routing :: LACP Over Dot1q Tunnel With 4506-E And IOS 15

Mar 14, 2013

i'm desperately trying to get LACP working over a dot1q Tunnel. The "Service Provider" Switches are two 4506-E Switches with SUP7-E connected via a 10G Link, running on cat4500e-universalk9.SPA.03.03.00.SG.151-1.SG
 
sample config:
 
dot1q tag vlan native
interface GigabitEthernet3/1
switchport access vlan 2001

[Code].....

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Cisco Switching/Routing :: 6509 LACP To Force10 10Ge?

Feb 7, 2013

I am trying to configure a 6509 as the passive  receiver from a Dell Force10 10Ge switch with 2 sfp to 2 gig ports on our 6509  switch, I see LACP is up on both sides but cannot pass traffic, I have only 2  vlans that will carry across the aggregate link from our vmware boxes, this is  just a temp until I get a 10ge in our 6509 chassis.

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