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 ...

learn more… | top users | synonyms

1
vote
1answer
26 views

Do I need to configure LAG on both ends? ESXi 6 and managed switch

This might sound like a silly question, but do I need to configure LAG settings on both ends? Currently running a single host with ESXi 6 (no vCenter), with three 1Gbps NICs in the vSwitch. The NIC ...
0
votes
1answer
24 views

LACP - Load Balancing Network 2Gbit Ubuntu

I have configured my server as bonding interface to achieve 2Gbit network speed but it seems ubuntu can not go over than 1gbit and the outgoing traffic from server is not balanced over 2 interfaces. ...
3
votes
1answer
138 views

High availability links on VMware ESXi

I have a cluster of 3 VMware ESXi6.0 hosts which are not licensed for VMware Distributed Switch. Currently, these hosts are configured with a static LAG between 2 ports on the server and a port each ...
0
votes
0answers
12 views

Firewall thinks ARP is being spoofed

My firewall log is filling with messages about a possible ARP spoofing attempt on my own LAN: 192.168.111.60 is a Synology RS815RP+ NAS on my LAN. 192.168.111.7 is a Lenovo EMC px4-300r NAS. Both ...
45
votes
5answers
26k views

How exactly & specifically does layer 3 LACP destination address hashing work?

Based on an earlier question over a year ago (Multiplexed 1 Gbps Ethernet?), I went off and setup a new rack with a new ISP with LACP links all over the place. We need this because we have individual ...
0
votes
0answers
57 views

Ubuntu LACP bond; interface up but not responding to ping requests

note: If I'm using wrong terms anywhere please let me know. Today seemed a good day to configure that LACP to combine 4x Gbe into a single pipe so bandwidths > 1 Gbit could be achieved when needed. ...
0
votes
0answers
41 views

HP Proliant and Cisco 3560G LACP - Up Sngl-port-Bndl Mstr Not-in-Bndl

I have to connect two GigaEthernet ports to get 2Gbps. I´m trying to connect a switch 3560G to a HPProliant DL 380G6 to give 2Gbps to the server through the switch. I use LACP in switch in this way: ...
1
vote
1answer
36 views

LACP and Loadbalancing?

I'm currently in a discussion about how LACP and load balancing is working. Assume, there are two servers, both using 4 nics (1Gbit) and they are connected to the same switch with aggregated Links. ...
1
vote
0answers
83 views

Lacp over two linux boxes - something like MC-LAG

I have two linux box'es which are gateways for some kind of virtualized network (Openvswitch, GRE). I am trying to optimize performance - so I decided, that I have to try remove routing part from them ...
0
votes
0answers
299 views

OpenVSwitch LACP bonding test setup problems

I want to test LACP bonding on ovs. I have 3 Ubuntu computer. Using 2 of them as a openvswitch and one of them as a host. The first ubuntu (call it switch1) has three NIC (2 of them usb/eth ...
4
votes
1answer
69 views

What happens to active TCP sessions when the active slave fails in a Linux bond (failove or LACP)?

Given an active-backup (mode 3) or 802.3ad (mode 4) type bond, when the active slave fails, is there any seamless failover for those TCP/IP connections that were active prior to and at the time of the ...
8
votes
1answer
250 views

iSCSI design options for 10GbE VMware distributed switches? MPIO vs. LACP

I'm working on expanding the storage backend for several VMware vSphere 5.5 and 6.0 clusters at my datacenter. I've primarily used NFS datastores throughout my VMware experience (Solaris ZFS, Isilon, ...
1
vote
1answer
50 views

How to implement lacp cross switches

I have a question of lacp on Cisco 2960x. Are they in the same group "1" or not? isolated? Lab setting: Server-4pt (linux) -> sw1 channel-group "1" Gi0/1-2 Server-4pt (linux)...
1
vote
1answer
1k views

LACP : Cisco ASA 5515 & Switch ProCurve 2920

I've two ASAs 5515 connected in failover Active/Stand by (on Gi0/5) My two ASAs are connected to two Switch ProCurve 2920 to have HA if something happens. So I plug something like that (don't pay ...
1
vote
0answers
37 views

NFSD lock up on FreeNAS 9.3

I have a Dell PowerEdge 2960 running FreeNAS 9.3, and a Dell PowerEdge 1955 Modular Chassis with a 5316M switch. I wanted to get a faster link between the two so I configured a LAGG with LACP over ...
0
votes
1answer
78 views

Link Aggregation with 3 switches

I am new in networking. Sorry for my ignorance. I have three switches. Switch 1 has 4 ports. Two of them connected to switch 2. And the other two ports are connected to switch 3. All these four ...
0
votes
1answer
283 views

LACP - Up Sngl-port-Bndl Mstr Not-in-Bndl

I setup a port channel between two Cisco switches, a 6509 running ios 12.2(17r)S4 and a 5596 running nx-os 5.2(1)N1(4). Several issues arose including bad patches and broken cables, but I currently ...
1
vote
0answers
75 views

LACP, sever 2012R2, qnap NAS & FAULT negotation

I've setting up a Windows Server 2012 R2 with hyperV services. The VM's hard drives are in Qnap NAS model TS-453S PRO. Between the server and the NAS, there is a D-link switch model DGS-1210-10. I'...
0
votes
0answers
67 views

interface not showing on port-channel (dell S5000 switch)

Our trunk went down due to a faulty cable, but when we had it replaced, the interfaces (speficially TenG 0/4 and /5) are not being shown on the port channel group even if they are physically up: Our ...
1
vote
2answers
673 views

can switch handle multiple LACP teams on the same ports

If I use SRIOV capable adapter for virtualization, and setup 2 different LACP links in 2 guests, so there may be 2 LACP links on the same ports on switch side, can switch handle this case? For ...
0
votes
2answers
256 views

Cisco - LACP between two Catalyst switches (trunk links)

So I just put up a LACP between two Cisco catalyst switches. Snippets of configuration are as following: [3550 switch - port 22 and 23 are connected to 2950 and 24 is to router] interface Port-...
1
vote
0answers
127 views

Openvswitch 802.3ad not working properly.

I have set up the catalyst and tested with standard bonding to work normally. bond+bridge had no issues. I then recreated using openvswitch and set bond0 to balance-tcp the 2ndary port is now ...
5
votes
3answers
16k views

Link aggregation (LACP/802.3ad) max throughput

I'm seeing some confusing behaviour regarding bonded interfaces under Linux and I'd like to throw the situation out there in hopes that someone can clear it up for me. I have two servers: Server 1 (...
5
votes
6answers
17k views

Does a single LACP channel over multiple switches increase redundancy?

I am curious for opinions, findings, or evidence that having multiple interfaces bonded using LACP to ports in multiple switches can increase redundancy. Previously bonded interfaces have always been ...
3
votes
3answers
16k views

Can bonding 2 interfaces double the speed?

I have 2 linux boxes running centos 6.5 each with 2 interfaces bonded together, linked to a Cisco 2960-S switch with lacp configured ports. The configuration on the switch port-channel load-balance ...
8
votes
1answer
6k views

Layer 2 Loop Avoidance: Three Switches in Series

I know this seems like a homework question, but it's actually part of a larger project (and network) and need to break it down into chunks so I'm clear with what I'm doing. I've never worked with [R/...
2
votes
0answers
550 views

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 ...
0
votes
3answers
1k views

Using NFS-root with bonded interfaces

I would like to configure our servers to boot with an NFS-root with two bonded interfaces. I managed to successfully set up the NFS-root with one network interface using a NFS-root enabled initrd ...
-2
votes
1answer
315 views

Teaming the 2 ports of a hp 361T pcie Dual port GB Nic [closed]

We have a network with two switches stacked for redundancy. We have a HO 36LT PCI-e Dual port NIC and an Intel x520 10GbE port adapter. I want to be able to assign one IP address for both ports. I ...
10
votes
1answer
2k views

FreeBSD link aggregation no faster than single link

We put a 4 port Intel I340-T4 NIC in a FreeBSD 9.3 server1 and configured it for link aggregation in LACP mode in an attempt to decrease the time it takes to mirror 8 to 16 TiB of data from a master ...
0
votes
1answer
524 views

OEL 6.5 bonding mode=802.3ad no connection

OEL 6.5 bonding mode=802.3ad no connection I configured 2nic into bond on OEL 6.5. to cisco switch (lacp) ---------- | eth0 |=====+ +~~physical-link~~\ ---------- || --------- | ...
0
votes
2answers
133 views

LACP vs manual load sharing

I have a file server with multiple NICs (1Gbps) consumed by some different kinds of client. Given my switch is configured hash using src and dest ip and port. By manual load sharing I mean NICs on ...
1
vote
1answer
159 views

CentOS 6.4 - Trying to lose link, but can't

I am trying to test out active/active LACP bonding between CentOS 6.4 and Arista. One of the tests I'm doing is to shut down an interface on the host and see what happens. On the switch: Link ...
-1
votes
1answer
185 views

Why do the Link States on my Force10 S50N LACP differ?

I was wondering if my Force10 LACP Setup is OK? Specifically, I'm looking for an explanation for the Link States, and why they differ, and wondering if the differing Link States indicates a ...
2
votes
4answers
20k views

Linux bonding: 802.3ad (LACP) vs. balance-alb mode

Here's the situation. I would like to connect my Linux servers to a single network using dual link for fault tolerance and load balancing reasons. The servers have 2 or more 1-gig NICs and I plan to ...
-1
votes
1answer
788 views

Network load balancing: LACP between Debian & FreeNAS over Cisco Switch doesn't work

My setup: 2 Debian Server, with Bonding 2 Storage Server FreeNAS with Link Aggregation 1 Cisco Switch SG-200 with LAG enabled MTU 9000 enabled everywhere Result: Network performance is still single ...
1
vote
1answer
297 views

Receive-side NIC teaming using LACP for use with NFS

I have a server with a 10G connection to a central switch. One NFS client has (2) gigabit NICS connected to the same switch. I'd like the NFS client to receive bandwidth of 2Gbps from the 10G server ...
0
votes
3answers
60 views

Communication redundancy

I have a device that is connected to a switch and is then connected to a customer controller. I have been asked to make the connection to the controller redundant because they are very far apart from ...
1
vote
1answer
2k views

Increase Network Bandwidth on Windows Server 2008 R2

I am looking after this network with around 40 clients on one Windows 2008 R2 server. These clients are connected to server via two gigabit switches (24-port dumb switches). Over the next few months ...
12
votes
2answers
3k views

VMware Distributed vSwitches (VDS) - Design, theory, *real* use cases and examples?

I'm starting to explore VMware Distributed Switches (dvSwitches or VDS) for use in existing and new installations. Assume VMware version 5.1 and newer with Enterprise Plus licensing. Prior to this, I'...
3
votes
1answer
467 views

LACP with VMWare 5.1 Distributed Switches (VDS) over multiple hosts.. How many switch LACP groups?

I'm setting up a 2-host VMWare 5.1 Cluster to use a vDS (Virtual Distributed Switch) with LACP enabled, over 4 NICs (2 per host). In times past, when I've used VMWare Standard Switches with Static ...
0
votes
2answers
2k views

Link Aggregation & Windows Servers

So... We have a few servers that we would like load balanced link aggregation between multiple network interfaces. In the past we have used broadcom basp teaming using LACP. Today we encountered THIS ...
4
votes
1answer
6k views

LACP with 2 NICs working when either one is down, not when both are up

I'm running into problems with getting a LACP trunk to operate properly on Ubuntu 12.04.2 LTS. My setup is a single host connected with two 10 Gbe interfaces to two seperate Nexus 5548 switches, with ...
2
votes
0answers
1k views

Configuring LACP between OpenIndiana (Solaris) and a Cisco C3560

I am running OpenIndiana (oi_151a8) and have two NICs aggregated using LACP connected to a Cisco WS-C3560G-48TS. Both the server and the switch show the aggregate link as up. But while link layer ...
3
votes
1answer
2k views

HP Procurve Core Switch Architecture

I want to build a new 'core' for our network. We currently have a 3com 4060 switch acting as the core, connecting all the other TOR and access switches together. The goal is to add resilience into ...
2
votes
1answer
127 views

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....
2
votes
2answers
12k views

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....
5
votes
3answers
8k views

Best way to provide redundant switching/links to server

We have 3x ESX hosts and 2x SANS that we wish to move to a redundant 10G networking infrastructure. We have 4x Dell PowerConnect 8024F's to provide our backbone and are configured as so (only core ...
0
votes
2answers
2k views

LACP Aggregation between Cisco C3750X and HP JD990A

The interface on the JD990A is very cut down. There is a serial console with minimal commands and a web interface. The 3750 is in a 2 switch stack and I am trying to configure cross-stack link ...
4
votes
1answer
607 views

Is is possible to put a tagged vlan on one physical interface on a Force10 S50N switch?

I servers that have a shared ethernet port for IPMI and the first NIC. They have 4-1GbE nics. I would like to bond the nics via LACP while still being able to access the IPMI over a tagged vlan only ...