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Questions tagged [lacp]

LACP, or Link Aggregation Control Protocol, is a standard defined by IEEE 802.3ad for bundling or bonding multiple physical network ports together into one virtual device. This provides both high availability and load balancing. Participants in an LACP aggregation actively communicate with each other using LACPDUs every 1 second or 30 second to maintain knowledge of the bond configuration.

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LACP or some type of round robin concept

I'm having trouble figuring out the best way to utilize redundant connections on several of our Windows based servers. We're running a large cluster of powerEdge 750s which come with dual gigabit NICs. Some of the servers run Linux. For those…
Atomiklan
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Linux Centos6 adapter bonding - Cisco 2960S EtherChannel LACP

I want to connect a CentOS 6.4 Linux Box with two NICs to a Cisco 2960S using LACP 802.3ad port aggregation. This mainly for redundancy reasons (and hopefully more bandwith). We don't use VLAN tagging. With the config listed below the link…
StackUnderflow
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Configuring LACP across a IBM B50G switch stack

Is it possible to configure LACP (Link aggregation control protocol) that spans across two IBM B50G stacked switches. Below is an illustration of what I am trying to accomplish. I have currently configured two ports in an "active" Link aggregation…
David Jackson
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Does LACP routing type have to be the same on all ends?

i was wondering if the routing mechanism for LACP (source / destination MAC, source+destination MAC, source / destination IP, source+destination IP) has to be the same within one LACP trunk* between two devices multiple LACP trunks* but one logical…
omni
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LACP Total Speed

If we were to connect two switches together using LACP (with 2 X 1Gbe ports on each side), does this mean that the max speed that a single MAC address will ever reach is 1Gb? So for example, if a single MAC address decided to "abuse" the link (e.g.…
jtnire
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Cisco switches LACP, lost connections

I just put up a LACP between two Cisco SG-200 switches. Unfortunately some PCs connected to these switches got problems like lost Postgres connections etc. My configuration is simple: ---------------- ---------------- | switch_1 |…
Knowledge
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port channel delay coming up <> linux config

after our 5k switch reboots, due to many configured vlans, LACP/port channels take some time to come up. seems to be a serial process, and if vlans are at bottom of this list, it takes some time - more than 2 minutes in some cases. our physical…
chimcentral
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LACP vs HP Trunk

Question on the performance and function of LACP vs HP "Trunk". Example, I have two HP 2910al-48G switches connected via two runs of CAT6 cable. Is there any difference in performance between setting up the link as LACP vs Trunk? Second and related…
JPoole
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OPNsense/pfsense on Proxmox with LACP, VLANs and Multi-WAN

I want to set up an OPNsense router (of pfsense if OPNsense sould not work as desired) on Proxmox. I have multiple WANs as well as multiple local VLANs. Since I have more VLANs than physical ports I obviously will have to use VLAN-trunking. And…
masgo
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Linux optical 10Gbe networking, how to diagnose performance problems?

I have a small cluster consisting of 3 servers. Each has two 10Gbe SFP+ optical network cards. There are two separate 10Gbe switches. On all servers one NIC is connected to switch 1, second NIC is connected to switch 2 to provide fault…
Mateusz Bartczak
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Correct way of setting up network teaming for maximum throughput in Windows Server

We have a backup server with 4x1GB NICs. All 4 NICs are configures as a single Team (Switch Independent, Dynamic). NIC 1-2 are connected to SW01, NIC 3-4 are connected to SW02 and the switches are interconnected on 4 ports. NIC1,2=====SW01 …
conf terminal
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ifenslave stuck (lacp bond)

I'm trying to set up LACP bonding on Ubuntu 16.04.1 but I'm presented with this slightly illogical issue: $ ifenslave bond0 eth0 eth1 eth0: is already enslaved to bond0 eth1: is already enslaved to bond0 $ ifenslave -d bond0 eth0 eth1 eth0: is not…
FourthWall
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In a LACP bond, do all partner interfaces need to have the same "oper key"?

We use LACP (mode 4) bonds extensively in our environment, and I occasionally run into problems with new deployments where cables get crossed, or switch ports are misconfigured causing bad LACP port states. One thing that I've been using to…
guzzijason
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QEMU and point-to-point link between VMs without bridge

The most common practice to connect VMs together is to use tap interfaces with the bridge between them. On a linux, bridge driver filters some classes of link-local multicast traffic, such as LACP frames. There is no easy mechanism to permit…
Yuri
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Using LACP failure detection

I would like to have clarification on bonding using 802.3ad (LACP) In that case does the link failure is only detected after 90 sec (30 *3) in case of long LACP_rate and 3 sec in case of short. This time looks to be a big time for fault tolerance.…
kiran K
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