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Cannot ping vlan interface with LAG etablished¿?¿?

ciscolover
Level 1
Level 1

HI all ¡¡¡¡¡¡¡¡

I have a switch powerconect (Dell/cisco).

I have one prolem. When i etablish channel group and LAG with another switch i cant  ping the vlan interface 100.

If the interfaces are not in a channel group i can ping this vlan interface.

Why i can't ping the vlan interface when the LAG its etablished?¿¿?¿?

I put the config with explanation:

Ok, this is the config

!Current Configuration:
!System Description "PowerConnect M6220, 3.1.5.2, VxWorks 6.5"
!System Software Version 3.1.5.2
!System Operational Mode "Normal"
!
configure
vlan database
vlan  100
exit
hostname "SW-xxxxxxx"
stack
member 1 1
member 2 1
exit
switch 1 priority 12
switch 2 priority 11
exit
ip address none
ip routing--------->Routing for ipv4 enable
ip route 0.0.0.0 0.0.0.0 10.0.4.1 --->DEFAULT GATEWAY IN THE SAME SUBNET OF THE VLAN INTERFACE 100
interface vlan 100
routing
ip address  10.0.4.7  255.255.255.0-->VLAN INTERFACE 100
exit


!
interface ethernet 1/g17
channel-group 2 mode auto --------->member of channel group 2 and vlan 100
switchport access vlan 100
exit

!
interface ethernet 2/g17
channel-group 2 mode auto------->member of channel group 2 and vlan 100 mode auto(lacp)
switchport access vlan 100
exit

!
interface port-channel 2
switchport access vlan 100-------->Portchannel 2 member of vlan 100

In this escenario you can view 2 interfaces in a chanel group:

If the LAG its etablished with the other switch i can´t ping te interface 10.0.4.7.
If one interface (1/g17 or 2/g18)its not in the channel group i can ping the interface 10.0.4.7

Why i can't ping the 10.0.4.7 when the LAG its etablished ¿? Please help.

1 Accepted Solution

Accepted Solutions

vinodjad1234
Level 2
Level 2

Hi,

it looks like , you have issue with STP.

I reckon , you need to disable the STP in dell ... I hope it will be connected with LAG

Please check it and let me know.

View solution in original post

4 Replies 4

vinodjad1234
Level 2
Level 2

Hi,

it looks like , you have issue with STP.

I reckon , you need to disable the STP in dell ... I hope it will be connected with LAG

Please check it and let me know.

OMG ¡¡ Now it works.

STP its recommended with LACP. Why stp bloqs the ports???

Thanks ¡¡

Hi,

Due to internal connectivity structure of dell switches , it creates loop and keeps LAG ports in blocking . I had same issue and when i had raised query against dell , they recommanded that STP should be disabled.

I think , you are also having same issue.

Please give rating your query has got rectified.

Vinod , thanks a lot.

It was driving me crazy ¡¡¡¡

regards ¡¡

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