topic RE: lacp in x460-24t in ExtremeSwitching (EXOS/Switch Engine)

lacp in x460-24t

sumeet — Wed, 25 May 2016 14:04:00 GMT

hi ,
i am using X460-24t extreme switch.
here is my setup

mydevice with two links configured in lacp mode --- extreme switch port 3
|
|
extreme switch port4
I have set vlan 3001 on port 3 as tagged with ip 172.16.254.1 . I run ping to it from my device with ip 172.16.254.2 .
I want to set lacp on port 3(master) and 4.
so , I ran
# enable sharing 3 grouping 3,4 algorithm address-based lacp
Question 1) had I used #enable sharing 3 grouping 3,4 lacp , what would be the difference ?
Question 2) Any specific command to see port sharing status ?

RE: lacp in x460-24t

Frank — Wed, 25 May 2016 14:15:00 GMT

I let others answer (1), but as to (2): "show sharing"

RE: lacp in x460-24t

Balaji_Kumar_Na — Wed, 25 May 2016 14:22:00 GMT

Q1: if you didn't use any address-based option (or) "address-based lacp" without specifying any algorithm like L3, L3_L4 and custom then default L2 algorithm will get set. So both CLI would result in no difference.

Q2: "show port sharing" command you can check the "Aggregator member" status

RE: lacp in x460-24t

Erik_Auerswald — Wed, 25 May 2016 15:11:00 GMT

You can use "show lacp lag detail" do look at the LACP status:
show lacp lag 3 detailBr,
Erik

RE: lacp in x460-24t

Kawawa — Wed, 25 May 2016 15:39:00 GMT

This article hopefully clarifies a lot:
https://gtacknowledge.extremenetworks.com/articles/How_To/how-to-configure-sharing-LAG-LACP-in-Summi...

RE: lacp in x460-24t

sumeet — Wed, 25 May 2016 15:43:00 GMT

got it .

Please correct me if I am wrong .
This is what I understand of LACP.
As told above
I think switch copies vlan setting of LACP master to other members of group.
Say my device has two ports named 3 and 4 connected to port 3 and 4 of extreme switch such that 3 is master and port 4 cable is unplugged.
Currently my device is pinging through 3.
Now I connect port 4 to 4 of device and then remove cable from port 3 .
The ping should not stop.
BTW is there any master slave concept like my device should be configured as LACP slave ?

RE: lacp in x460-24t

Erik_Auerswald — Wed, 25 May 2016 16:01:00 GMT

Hello Sumeet,

you are right that you configure the master port (VLAN, etc.) only, those settings are applied to all ports in the port sharing (rather to a logical port consisting of some physical ports).

If you disconnect and reconnect individual ports in a sharing, some packets may be lost, but a ping should resume.

Both LACP partner devices are configured the same, LACP does not use a master/slave configuration.

Br,
Erik

RE: lacp in x460-24t

sumeet — Wed, 25 May 2016 16:07:00 GMT

as soon as I enable sharing .
my ping stops .
I tried
#show vlan3001
got
Ports: 1. (Number of active ports=1) Tag: *3gb
Flags: (*) Active, (!) Disabled, (g) Load Sharing port
(b) Port blocked on the vlan, (m) Mac-Based port

Don't know what blocked indicates ?

RE: lacp in x460-24t

Erik_Auerswald — Wed, 25 May 2016 16:10:00 GMT

If it works w/o sharing, but stops with sharing enabled (on one side), the other side seems not to use LACP. The "blocked" indicates that the port sharing is not active.

RE: lacp in x460-24t

sumeet — Thu, 26 May 2016 10:59:00 GMT

turns you my device has static LAG support without lacp .
What change should I do in extreme switch setting for this ?

RE: lacp in x460-24t

Kevin_Kim — Thu, 26 May 2016 11:11:00 GMT

You can just take out 'lacp' at the end of the sharing command.

# disable sharing 3
# enable sharing 3 grouping 3,4 algorithm address-based