EtherChannel & Port Aggregation different ?!?

hi frens,
i quite confuse in the EtherChannel & Port Aggregation technology... and how they related in perform load balancing ??
Thanks
William

Hi William,
Etherchannel and Port Aggregation are two terms that mean the same thing. Etherchannel is 'Cisco terminology' and Port Aggregation and link bundling are generic terms.
HTH,
Bobby

Similar Messages

Port aggregation on different switches?

Hello all :)
I got a server PC with two fast ethernet NICs (NICS do support port aggregation)
I know you can connect two 100 Mbps ports of server to two fast ethernet ports of a switch, this way you get one 200 Mbps link. If one of the ports or one of the links fail, other link keeps working.
this is a vey nice redundancy.
My question is;
is it possible to bundle two fast ethernet ports of server to two different switches? (first ethernet port of PC to switch 1 and second ethernet port of PC to switch 2. switch 1 and switch 2 are connected each other with an uplink)
if possible, what is the CLI command for that?
thank you very much for helping.

Hello,
AFAIK, and unless something has changed very recently, the only way to link two (or more) switches together in a single Etherchannel is in a stack configuration.
Nortel appears to have a feature called Split MultiLink Trunking, which does multichassis trunking, you might want to have a look at the document below:
Layer 2 Trunking Availability Strategies using SMLT and DMLT
http://www.informit.com/articles/article.asp?p=169544&seqNum=3&rl=1
Regards,
GP

Etherchannel or Aggregated ports between switch and AIX server

I have a problem with the configuration of an etherchannel or port aggregation between an 4507 Catalyst switch and a server running AIX 5.2 maintenance level 4. The two ports on the switch are on the same blade.
I tried configuring etherchannel with the command
config-if# channel-group XX mode on
and I tried configuring 802.3ad with the command
config-if# channel-group XX mode activ
but in both cases, as soon as I configured the second port, connection went down (I monitored with pings).
On the AIX, I tried configuring modes "round-robin" and "802.3ad" with both switch configurations, but the result was the same.
Does anyone has experience with this kind of configuration?
thanks,
Antoine

Hi amaitre
Could you setting the etherchannel with the AIX Server?
I configured in my switch 4510 with a AIX, but the 2 ports with channel-group keep in suspend. This is the configuration
interface Port-channel2
description ## LACP AIX ##
switchport
switchport access vlan 100
load-interval 30
interface GigabitEthernet4/20
description ## LACP AIX ##
switchport access vlan 100
channel-protocol lacp
channel-group 2 mode active
spanning-tree portfast
interface GigabitEthernet4/21
description ## LACP AIX ##
switchport access vlan 100
channel-protocol lacp
channel-group 2 mode active
spanning-tree portfast
This configuration works with a server Dell with windows 2008.
The schema is 1 switch 4510 with etherchannel to AIX.
Thanks!

Server Port Aggregation

Question: Is it possible to take an HP or Dell server with dual 1G Ethernet ports and create a 2G logical EtherChannel (port-channel interface) connection to a Catalyst switch (4948-10GB or 3750) that will give me a total 2G of usable bandwidth? I wouldn't expect to get exactly 2G of bandwidth, but I would like to get close.
I've seen a lot of examples creating EtherChannel connections from servers to Catalyst switches for the purpose of redundancy (in case one port/card/cable fails), but they are still only showing 1G of usable bandwidth.
Maybe I'm misunderstanding the term 'aggregation', but I would expect this to mean that by aggregating 2 - 1G ports, I'd be getting 2G of bandwidth.
Cisco TAC is telling me differently. This is from a case I have openedâ¦
>
>From the case notes, I understand that you have a port channel with 2
>gigabit Ethernet ports. You stated that you are just getting 1 GB of
>throughput.
>
>I have to tell you that is perfectly normal and it is the way the ether
>channel works. Your configuration is perfect and everything seems to be ok.
>Let me explain why this is an expected behavior. The ether channel is not a
>feature to increase the throughput of your network or a link between two
>devices. This is a feature that improves the interfaces performance by
>avoiding the traffic to overwhelm one single interface. For example let say
>that you have a port channel of 5 ports this does not mean that you will
>have throughput of 5GB, what this means is that the traffic has 5 options to
>reach an specific device. Which means that you can split 1GB of throughput
>on 5 different interfaces depending of the algorithm you use. You can check
>the algorithm on the following link:
>
To restate my question(s)â¦
Can I get 2G of usable bandwidth from 2 - 1G ports on my server? Or is the TAC engineer right?
If the TAC engineer is wrong, does anyone have any examples/references to point me in the right direction?
Thanks!
Jeff

Nope he is right that is the way etherchannel works . A specific conversation will always go down 1 link depending on the the way the channel is configured , whether it be on source mac or ip or ip source destination . Say you have a 3 gig port etherchannel , this will divide up the total traffic across the ports instead of everything coming down 1 pipe but any one conversation traverses just 1 of those links so it has a total of 1 gig bandwidth to use minus whatever other traffic is already riding that port.

Ether Channel (port aggregation)

No matter LACP or PAgP is used, is it possible to do port aggregation on a Server with NIC 1 & NIC2 respectively connecting to different Switches which are then having the same uplink to higher level?
as follows : -
Server NIC # 1 ------ Switch #A ----\
---- LAN
NIC # 2 -------Switch # B ---/
My understanding is that it cannot, can it ?
Rgds,
Raymond.

THanks, that's what i'd been understanding, yet, someone else post me this answer, Quote,
For your case, the LAN switches won't care how you send out the packet, it just treat the two NICs as two NICs, your server need to deal with the packet/session aggregation. It works because we suppose your server don't have any STP issues.
Kind Regards,
Bong So
Professional Services, Equant HK
UNQuote
I shall test ... the actual case is happening with our being installed IBM BladeCenter Server, having the NIC1 and NIC2 internally wired to CIGESM switch 1 and 2; and the NIC's are Broadcom capable of using Virtual adapters in either modes, one which is LACP.
Thanks again.
Raymond.

CSS 11500 Port Aggregation

Does the 11503 or 11506 support any sort of port aggregation, like etherchannel, to support larger pipes than 1Gb?
Thanks,
Patrick

The CSS does not support EtherChannel.
~Zach

Port aggregation over 2 or more switches?

I am currently using a HP1910 48 Port with Port Aggregation.
Is it possible to use this feature over 2 or more of these switches so that If one switch fails the other automatically comes into play?
Many than

Hi:
You may also want to post your question on the HP Business Support Forum -- Web and Unmanaged Switching section.
http://h30499.www3.hp.com/t5/Web-and-Unmanaged/bd-p/switching-v-series-forum#.VNN-33k5C9I

L2 Etherchannel Port Suspended issue

Hi All,
We're using 2 P2P link from different providers ( one 30 Mb and second 20 Mb) from Main POP to Remote POP.
We required load balance between both the P2P links with failover, but one of the port in suspended mode while channel-group apply.
Remote POP- Cisco 3400ME
Remote-POP-3400ME#sh int gi0/1
GigabitEthernet0/1 is up, line protocol is down (suspended)
Hardware is Gigabit Ethernet, address is 0016.9d26.5101 (bia 0016.9d26.5101)
Description: *** P2P-1 ***
MTU 9000 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 3/255, rxload 14/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 100Mb/s, link type is auto, media type is 10/100/1000BaseTX SFP
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:29, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 5681000 bits/sec, 757 packets/sec
30 second output rate 1306000 bits/sec, 531 packets/sec
127102505 packets input, 144344310802 bytes, 0 no buffer
Received 4570664 broadcasts (2231603 multicasts)
0 runts, 0 giants, 0 throttles
10 input errors, 10 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 2231603 multicast, 0 pause input
0 input packets with dribble condition detected
interface GigabitEthernet0/1
description *** P2P-1 ***
port-type nni
switchport trunk allowed vlan 1,3-4094
switchport mode trunk
load-interval 30
channel-group 21 mode active
end
Remote-POP-3400ME#sh int fas0/23
FastEthernet0/23 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 0016.9d26.5119 (bia 0016.9d26.5119)
Description: *** P2P-2 ***
MTU 1546 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 4/255, rxload 28/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:24, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 11147000 bits/sec, 1390 packets/sec
30 second output rate 1944000 bits/sec, 1112 packets/sec
5404734 packets input, 1041290192 bytes, 0 no buffer
Received 4924815 broadcasts (2259127 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 2259127 multicast, 0 pause input
0 input packets with dribble condition detected
interface FastEthernet0/23
description *** P2P-2 ***
port-type nni
switchport trunk allowed vlan 1,3-4094
switchport mode trunk
load-interval 30
channel-group 21 mode active
end
====================================================================
MAIN POP- cisco 3750
MAIN-POP-3750-STACK#sh int gi2/0/7
GigabitEthernet2/0/7 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0019.e78b.c607 (bia 0019.e78b.c607)
Description: *** P2P-1 ***
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 6/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 100Mb/s, link type is auto, media type is 10/100/1000BaseTX SFP
Media-type configured as connector
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 3/75/0/0 (size/max/drops/flushes); Total output drops: 103937
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 2660000 bits/sec, 2181 packets/sec
30 second output rate 27366000 bits/sec, 2723 packets/sec
31887654718 packets input, 10045858003774 bytes, 0 no buffer
Received 467095011 broadcasts (214841125 multicasts)
0 runts, 27 giants, 0 throttles
22 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 214841125 multicast, 406425160 pause input
interface GigabitEthernet2/0/7
description *** P2P-1 ***
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,3-4094
switchport mode trunk
speed 100
load-interval 30
channel-group 21 mode active
MAIN-POP-3750-STACK#sh int gi2/0/10
GigabitEthernet2/0/10 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0019.e78b.c60a (bia 0019.e78b.c60a)
Description: *** P2P-2 ***
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 100Mb/s, link type is auto, media type is 10/100/1000BaseTX SFP
Media-type configured as connector
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 2449
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 2000 bits/sec, 4 packets/sec
30 second output rate 55000 bits/sec, 62 packets/sec
13820128 packets input, 4202349171 bytes, 0 no buffer
Received 2375120 broadcasts (810650 multicasts)
0 runts, 0 giants, 0 throttles
15 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 810650 multicast, 478680 pause input
0 input packets with dribble condition detected
28535531 packets output, 16494317102 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
interface GigabitEthernet2/0/10
description *** P2P-2 ***
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,3-4094
switchport mode trunk
load-interval 30
channel-group 21 mode active
Please advise me to fix the issue and we are able to achieve and use with load-balance via etherchannel.
Thanks in ADV,

Hi Inayath,
Remote POP - Cisco 3400
%EC-5-CANNOT_BUNDLE2: Fa0/23 is not compatible with Gi0/1 and will be suspended (MTU of Fa0/23 is 1500, Gi0/1 is 9000)
FastEthernet0/23 is up, line protocol is down (suspended)
Hardware is Fast Ethernet, address is 0016.9d26.5119 (bia 0016.9d26.5119)
Description: *** P2P-2 ***
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:11:15, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 56000 bits/sec, 65 packets/sec
30 second output rate 0 bits/sec, 0 packets/sec
658410 packets input, 573817450 bytes, 0 no buffer
Received 202028 broadcasts (92075 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 92075 multicast, 0 pause input
0 input packets with dribble condition detected
333031 packets output, 77587439 bytes, 0 underruns
0 output errors, 0 collisions, 3 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
GigabitEthernet0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0016.9d26.5101 (bia 0016.9d26.5101)
Description: *** P2P-1 ***
MTU 9000 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 3/255, rxload 30/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 100Mb/s, link type is auto, media type is 10/100/1000BaseTX SFP
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:16, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 12136000 bits/sec, 1230 packets/sec
30 second output rate 1557000 bits/sec, 921 packets/sec
3730111 packets input, 4532149684 bytes, 0 no buffer
Received 189538 broadcasts (88491 multicasts)
0 runts, 7 giants, 0 throttles
20 input errors, 13 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 88491 multicast, 0 pause input
0 input packets with dribble condition detected
2663637 packets output, 494552940 bytes, 0 underruns
0 output errors, 0 collisions, 3 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out

Traffic Between 2 Ports on Different VLANs on the Same Switch

Hi,
This question probably results from a flaw in my understanding of network layer 2 versus layer 3 and VLANs so any additional context in that regard would be very welcome
If I've got 2 systems on difference VLANs that are connected to ports on the same switch (e.g. 2950), with that switch being connected via an uplink to a router or layer 3 switch and i want to pass traffic between the 2 systems (e.g. copy a file from a folder shared on one system to another), will the traffic pass directly from one port on the 2950 to the other? Or will it need to go through the uplink? I guess it will need to go through the uplink initially as layer 3 needs to be involved for inter-VLAN routing but wondering if layer 2 MAC address will ultimately be learned, allowing traffic to pass directly between the systems, not over the uplink.
Thanks in advance,
cisco_reader.

If the hosts are on different Layer 2 Vlans and you want to pass data between them, that data needs to be 'Routed'.
In order to Route data from one Layer 2 Vlan to another, you need a device capable of Layer 3 Routing. That device can be a traditional Router or can be something called a Layer 3 switch.
A 2950 switch is Layer 2 only so has the ability to create many Layer 2 Vlans which is what you have done. In order to route traffic between those Vlans, you can either use a router or a L3 switch.
If you decided to use a router, look up something called 'Router on a Stick' which involves creating a Trunk link from the 2950 to the Router and then setting up Subinterfaces on the Routers port to act as the 'Default Gateway' for each of your Vlans.

Wireshark capture on access port displays different vlan traffic

Hi Guys,
i have a nexus 4001i Blade Center Switch where i have a server connected in mode access to a particular vlan.
when i use wireshark on this port, i see different traffic conversations of different servers in different vlans which seems strange to me.
anybody have an idea why a server in mode access with wireshark is able to view different vlan traffic? I also see non multicast and non broadcast converations.
the port the server is connected to is not a monitor port but only in switch port mode access.
thanks in advance for you feedback

Hi,
So it looks like you're getting unicast traffic flooded to all ports. There are a couple of reasons I've come across that can cause this.
Asymmetric routing: See Unicast Flooding in Switched Campus Networks and/or Case Study #8: Asymmetric Routing and HSRP (Excessive Flooding of Unicast Traffic in Network with Routers That Run HSRP) for details of why it happens and how to prevent it.
Microsoft Network Load Balancing. As per the Microsoft Troubleshooting NLB:
In unicast mode (the default Forefront TMG cluster operation mode) NLB induces switch flooding, by design, relaying packets sent to the VIP addresses to all cluster hosts. Switch flooding is part of the NLB strategy for obtaining the best throughput for any specific load of client requests. However, if the NLB interfaces share the switch with other (non-cluster) computers, switch flooding can add to the other computers' network overhead by including them in the flooding and consequently have a detrimental effect on network and/or server performance.
Regards

Cisco Port Aggregation

i have a synology nas with 4 1GB ports and a Dell R710 server with 8 ports
I want to Configure Link Aggregation
so i configured
port 13-20 = 8 ports
port channel group 1 on
port 21-24 = 4
port channel group 2 on
nothing on the switch can speak to those port channels
where have i gone wrong
Thanks
John

It's not server dependent, it is OS dependent, whatever OS or Hypervisor you installed in your server
You need to match that on the switch
for VMWare they support mode ON, so your config above works, but you need to change the hashing on the ports to "route based on IP Hash"
for Windows Hyper-V, it supports both ON and active(LACP), on your hypervisor you select either static for ON, and LACP for well, LACP
your config doesn't stop there, you need to configure your OS/Hypervisor the corresponding vSwitch.
All in all, you lack configuration on your server itself

Can I have duplicate ethernet ports with different proxies in my automatic location?

Hello. I use my personal MacBook Pro on a corporate network and at home, on the road, etc. Outside of work, I use ethernet, WiFi, and iPhone/USB depending on the situation. I have those configurations set up in an automatic location and they work fine. At work, I always connect via ethernet. Our corporate network requires some arcane proxy settings, that don't work when I am away from the office. Currently, I use a separate location for work, but I am lazy and also like things to work elegantly, so I would rather have this work automatically. I have been able to create two Ethernet ports in my automatic location, but I can't find a way to get the higher priority port to "fail" if it is the wrong location. Is there any way to do what I want automatically?
Thank you.

You might consider utilities such as
MarcoPolo
Location X
Airport Location Utility
Locamatic
LocationChanger
etc...
Which can change your location based on the local network information, assuming there is something about the different network characteristics the utilities can detect.

Nexus1000v: Mgmt Port on different VLAN than host

I am setting up a pair of Nexus 1000v switches. As per the Cisco
documentation, I have the management port in the system-uplink
port-profile. However, currently, this management port is in the same
production VLAN as most of our servers. I would rather have the
management in an separate VLAN for security and reliability reasons.
Also, as I cannot assign a VLAN to both the system-uplink and the
data-uplink port-group, this means all of the server traffic will be
using the system-uplink port-group. This does not sound logical.
My question is:
1. Does the management port have to be in the same VLAN as the VM Host
server?
2. If is does, what are the implications of putting the management port
on the data-uplink port-group?
3. OR, if (1) is YES, then what do you think about putting the VM Hosts
(ESXI) on a separate VLAN than the virtual servers?
Note: I have been playing with svs domain mode l3. But as I cannot even
ping the gateway, I haven't had much success.

I would say you should seperate it.
One VLAN Management (mabye in ESX Managemt or Switchmanagement VLAN)
One VLAN for Packet & Contrl.
Others for Data (server, user traffic)
Seperate Management ist just for security reasons
The others should be seperated, because the are very important to let the nexus Work, If packets are lost, the hole nexus will get trouble to work.
Additional you should think about QoS if you don't use a seperate NIC for that traffic. I would suggest to use a bundle of NIC's for evetyhing and work with QoS to be High Available.
Thats my point of view after discussion in a nexus training and with a cisco technician.
regards,
Sebastain

Partitioning FXO port for different users on Cisco CME 2911or UC540

Hello,
we have 10 users in our network and we have 4 FXO port and lines connected to them, we would like to implement this requirement on our network below;
2 users will have access to FXO port 1
3 users will have access to FXO port 2
3 users will have access to FXO port 3
2 users will have access to FXO port 4
please, i have searched for the features on UC540 but no avail, everyone is going out on all port but i only want 2 users to be able to access a port then others should not.
please, how do i archieve this.
please, reply

You would need something called Class of Restriction.
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/admin/configuration/guide/cmeadm/cmeblock.html#65477
Basically, you put "locks" on your outgoing dial-peers which are referencing your analog ports, and then you give certain "keys" to the directory numbers you wish to unlock those locks.

RV220W - Port Forwarding - Different Ports

Hey,
I have a RV220W with 1.0.3.5 Firmware installed.
I also have a few servers with services I need to expose to outside the network (RDP and some websites) where the external port is not the same as the LAN port. I could accomplish this with my previous router using port forwarding and it looks like I can do the same here on the RV220W but I can't quite get it to work successfully. I would be grateful for any help / directions.
Thanks.

So here is how Port Forwarding is set up on the RV220W with firmware 1.0.3.5
In my example I needed to setup my :6001 to forward to an internal address for remote desktop, 192.168.1.12:3389.
First, as detailed above by Robert, set up the custom service you want the public address to be listening for. In 1.0.3.5 I found this under Firewall > Advanced Settings > Custom Settings. Add a new service speficying the name, protocol, and ports. For my RDP connection It was "RDP", TCP, and the Start Port and End Port set as "6001", the port that was listening publicly.
Next go to Firewall > Port Forwarding and add a port forwarding record. And set the following values.
Action: Always Allow
Service:
Destination IP:
Forward From Port: Same as incoming port
Forward To Port: 3389
Hit save and that should be it. The problem I was running into is I was setting the "Forward From Port" as the port I wanted to have translated, so 6001. This is already specified with the custom service I created, so when setting it twice it wasnt working.

EtherChannel & Port Aggregation different ?!?

Similar Messages

Maybe you are looking for