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Lacp


Hi, my setup is
vlan 10
vlan 11

Port fa 0/9 and Fa 0/10 connects to Primary Barrcuda LoadBalancer
Port fa 0/11 and fa 0/12 connects to Secondary Barrcuda LoadBalancer

interface fa 0/9
switchport mode access
switchport access vlan 10

interface fa 0/10
switchport mode access
switchport access vlan 10

interface fa 0/11
switchport mode access
switchport access vlan 11

interface fa 0/12
switchport mode access
switchport access vlan 11

I want to configure Link aggregation using LACP on CatOS,
fa 0/13-16 for vlan 10 
fa 0/17-20 for vlan 11

How do i ensure no looping occurs.

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Silver

Re: Lacp

Hello Saquib,

all ports in slot 1 will use LACP this is a known limitation of CatOS.

LACP is standard based and should be preferred over PAGP

Hope to help

Giuseppe

8 REPLIES
Hall of Fame Super Silver

Re: Lacp

Hello Saquib,

you need to set the use of LACP at linecard level with:

set channelprotocol lacp ?

                        module(s)

set channelprotocol lacp x

set vlan 10 x/13-16

set vlan 11 x/17-20

set port channel x/13-16  M

set port channel x/17-20 N

where M and N are integers channel group numbers must be unique and not used already, x is the slot number

Edit:

I did a mistake

the command is different

set port lacp-channel x/13-16  M mode active

set port lacp-channel x/17-20 N mode active

as described in:

http://www.cisco.com/en/US/tech/tk389/tk213/technologies_configuration_example09186a0080094470.shtml

Hope to help

Giuseppe

New Member

Re: Lacp

hi, show module gives output

sh module               
Mod Slot Ports Module-Type               Model               Sub Status
--- ---- ----- ------------------------- ------------------- --- --------
1   1    48    10/100/1000BaseT Ethernet WS-X6748-GE-TX      yes ok
2   2    24    24 port 1000Base FX       WS-X6724-SFP        yes ok
5   5    2     1000BaseX Supervisor      WS-SUP720-BASE      yes ok
15  5    1     Multilayer Switch Feature WS-SUP720           no  standby
6   6    2     1000BaseX Supervisor      WS-SUP720-BASE      yes standby
16  6    1     Multilayer Switch Feature WS-SUP720           no  ok

set channelprotocol lacp 1   ( 1 is the module numer for ethernet module )

set vlan 10 1/13-16

set vlan 11 1/17-20

set port lacp-channel 1/13-16  1 mode active

set port lacp-channel 1/17-20 1  mode active

is this config correct

Hall of Fame Super Silver

Re: Lacp

Hello Saquib,

to build two different groups you need to use two different number like:

set port lacp-channel 1/13-16  1 mode active

set port lacp-channel 1/17-20 2  mode active

Hope to help

Giuseppe

New Member

Re: Lacp

Hi Giuseppe, thanks for supporting the post.

I m confused, do I need One Channel-Group or Two for my requirment.

which command will show bandwidth utilization on the EtherChannel and data_transfer on the Ethernetchannel.

Hall of Fame Super Silver

Re: Lacp

Hello Saquib,

>> I m confused, do I need One Channel-Group or Two for my requirment.

you are going to two different devices so you need to use two groups

>> which command will show bandwidth utilization on the EtherChannel and data_transfer on the Ethernetchannel.

to be investigated

Hope to help

Giuseppe

New Member

Re: Lacp

Hi Giuseppe

Thank you for replying. Its clear that I need to have two groups.

Once I apply LACP on mod 1 then all interfaces in mod 1 will be LACP ( 48 port 10/100/100 module )  ; or its possible to use some port in future for PAGP

Thanks

ST

Hall of Fame Super Silver

Re: Lacp

Hello Saquib,

all ports in slot 1 will use LACP this is a known limitation of CatOS.

LACP is standard based and should be preferred over PAGP

Hope to help

Giuseppe

Re: Lacp


Hi, my setup is
vlan 10
vlan 11

Port fa 0/9 and Fa 0/10 connects to Primary Barrcuda LoadBalancer
Port fa 0/11 and fa 0/12 connects to Secondary Barrcuda LoadBalancer

interface fa 0/9
switchport mode access
switchport access vlan 10

interface fa 0/10
switchport mode access
switchport access vlan 10

interface fa 0/11
switchport mode access
switchport access vlan 11

interface fa 0/12
switchport mode access
switchport access vlan 11

I want to configure Link aggregation using LACP on CatOS,
fa 0/13-16 for vlan 10 
fa 0/17-20 for vlan 11

How do i ensure no looping occurs.

Hi,

Check out the belwo linkfor lacp configuration on cat os switches

http://www.cisco.com/en/US/tech/tk389/tk213/technologies_configuration_example09186a0080094470.shtml

and you are configuring etherchannel between load balancers port and switch it will increase the channel pipe between swicthes and load balancer.

Hope to Help !!

Ganesh.H

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