is this a valid setup?

[ravindra Krishna]

Hi Everybody,

I tried to ping 192.168.1.2 to 192.168.1.1 but does not ping. Just wondered if its a valid setup.

Please let me know if there is any config mistake or any aditional config is required. Any link to understand froming etherchannel on a vlan will also be helpful.

Thanks,

Ravi

[lgijssel]

This is certainly a valid setup.

Problem may be with you port channel configuration but recently there was a similar "cannot ping" problem in which the windows firewall was the culprit. This could be the case here as well.

Config info for etherchannel:

http://www.cisco.com/en/US/docs/switches/lan/catalyst3550/software/release/12.1_4_ea1/configuration/guide/swethchl.html

regards,

Leo

[johnlloyd_13]

hi ravi,

try to replace trunk links between switches with cross-cables (represented as dashed lines) and test again.

[Marwan ALshawi]

Make the etherchannel based on the protocol either

Auto desirable

Or

Auto active

Make sure you etherchannel is up

Show etherchannel summary

HTH

Sent from Cisco Technical Support iPhone App

[ravindra Krishna]

I will paste the configure again and paste the config and the results. My collegues say its not a valid setup but thanks now I know its a valid set up.

Regards,

Ravi

[ravindra Krishna]

Hi All,

Please find the config below:

L3/multilayer (still being used in l2)

hostname multi_switch

!

!

interface FastEthernet0/1

channel-protocol pagp

channel-group 1 mode auto

switchport access vlan 10

!

interface FastEthernet0/2

channel-protocol pagp

channel-group 1 mode auto

switchport access vlan 10

!

interface FastEthernet0/3

!

interface Port-channel 1

!

interface Vlan1

no ip address

shutdown

!

interface Vlan10

ip address 192.168.1.1 255.255.255.0

!

ip classless

Switch

hostname Switch

!

!

!

interface FastEthernet0/1

switchport access vlan 10

channel-protocol pagp

channel-group 1 mode auto

!

interface FastEthernet0/2

switchport access vlan 10

channel-protocol pagp

channel-group 1 mode auto

!

interface FastEthernet0/3

switchport access vlan 10

!

interface FastEthernet0/4

PC IP : 192.168.1.2/24

Now, is there any config issue in this?

Still unable to ping...below is the ether channel summary:

On multiswitch:

Number of channel-groups in use: 1

Number of aggregators:           1

Group  Port-channel  Protocol    Ports

------+-------------+-----------+----------------------------------------------

1      Po1(SU)           PAgP   Fa0/1(P) Fa0/2(P)

On nomal l2 switch:

Number of channel-groups in use: 1

Number of aggregators:           1

Group  Port-channel  Protocol    Ports

------+-------------+-----------+----------------------------------------------

1      Po1(SU)           PAgP   Fa0/1(P) Fa0/2(P)

i am not able to figure out where exactly is the issue.

Regads,

Ravi

[Marwan ALshawi · Accepted solution]

Hi Ravi

try the bellow config with simple changes

hostname multi_switch

!

!

vlan 10
name Vlan_10

interface FastEthernet0/1

channel-protocol pagp

channel-group 1 mode desirable

switchport access vlan 10

!

interface FastEthernet0/2

channel-protocol pagp

channel-group 1 mode desirable

switchport access vlan 10

!

interface FastEthernet0/3

!

interface Port-channel 1
switchport access vlan 10
no shut
!

interface Vlan1

no ip address

shutdown

!

interface Vlan10

ip address 192.168.1.1 255.255.255.0
no shut

################################################

hostname Switch

!

!

!

vlan 10
name Vlan_10

interface FastEthernet0/1

switchport access vlan 10

channel-protocol pagp

channel-group 1 mode auto

!

interface FastEthernet0/2

switchport access vlan 10

channel-protocol pagp

channel-group 1 mode auto

!

interface FastEthernet0/3

switchport access vlan 10

interface Port-channel 1
switchport access vlan 10
no shut

Good luck

[ravindra Krishna]

Hi Marwanshawi,

Let me give it a go and let you. Keep you updated.

Regards,

Ravi

[shehinpm1]

pls check is this config required under interface ?

#switchport access vlan 10

[ravindra Krishna]

Hi,

No mate. adding the vlan in the portchannel did not help.

Regards,

Ravi

[ravindra Krishna]

Guys,

It did not work. I have been trying this. Till now no luck. I have tried all the above. Not working.

Any assistance will be hightly appreciated.

Regards,

Ravi

[Peter Paluch]

Ravi,

Can you please post the output of the show etherchannel summary from both switches? Thank you!

Best regards,

Peter

[ravindra Krishna]

Hi Peter,

multilayer

Number of channel-groups in use: 1

Number of aggregators:           1

Group  Port-channel  Protocol    Ports

------+-------------+-----------+----------------------------------------------

1      Po1(SU)           PAgP   Fa0/1(P) Fa0/2(P)

Normal:

Number of channel-groups in use: 1

Number of aggregators:           1

Group  Port-channel  Protocol    Ports

------+-------------+-----------+----------------------------------------------

1      Po1(SU)           PAgP   Fa0/1(P) Fa0/2(P)

Please do let me know if you need any other information.

Regards,

Ravi

[Peter Paluch]

Ravi,

Neither me nor other friends here have spotted a problem, and this is really a very basic configuration. If you are trying to configure this in Packet Tracer, be warned that the Packet Tracer may not be simulating this kind of configuration properly. In that case, we are trying to find a bug where none exists. Do you have an option of testing this on a real equipment?

Best regards,

Peter

[ravindra Krishna]

Hi All,

It works fine. I just need to wait 5 sec before I can start pining. I think adding the vlan to the portchannels resolved the issue.

Thanks All.

Cheers!

Ravi