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Can not ping to My 3560 Switch form 2960

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Md. Sultan Al Arif
Level 1
Level 1

‎08-28-2010 10:55 PM - edited ‎03-06-2019 12:42 PM

Hi

I am having a strange problem to ping 3560 Switch from my 2960 Switch. Few Days earlier it was working. Both the Switches are having trunk. At my 2960 Switch can only Ping his Valn 1 Ip address. 2560 can not ping 2960 but can ping other network switches and router.

Can you guys help me what is the reason behind this...

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Nagaraja Thanthry
Cisco Employee
Cisco Employee
In response to Md. Sultan Al Arif

‎08-29-2010 08:36 PM

Hello,

The two switches are on different IP subnets.

On 3560:

interface Vlan1

ip address 10.99.43.7 255.255.255.0

no ip route-cache

On 2960:

interface Vlan1

description "Management VLAN"

ip address 10.99.15.5 255.255.255.128

no ip route-cache

So, they cannot talk to each other. One way this could work is if you change

the subnet mask to /16 i.e. 255.255.0.0.

Hope this helps.

Regards,

NT

View solution in original post

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6 Replies 6

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Hitesh Vinzoda
Level 4
Level 4

‎08-29-2010 03:10 AM

Hi,

Try adding default gateway on 2960

ip default-gateway x.x.x.x

HTH

Hitesh Vinzoda

Pls rate useful posts

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Nagaraja Thanthry
Cisco Employee
Cisco Employee

‎08-29-2010 07:59 AM

Hello,

Have you checked the trunk to see if you have enabled management vlan? It

would be a good idea to check the output of "show spanning-tree vlan

" command on both 3560 and 2960 and make sure that the

management vlan is in forwarding state on the trunk. Also, you need to check

to make sure that both are pointing to the same MAC address as the

spanning-tree root. My guess is that for some reason, the trunk may not be

allowing the management vlan traffic.

Regards,

NT

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rowin_rollwu
Level 1
Level 1

‎08-29-2010 09:07 AM

Hi,

Can you provide more detailed information?
Such as configuration or debug information (debug ip packets)

Regards,

Feng Luo

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Md. Sultan Al Arif
Level 1
Level 1
In response to rowin_rollwu

‎08-29-2010 08:24 PM

Hi

My sh run.. Sh version and some debugs are ttached here.

71256-SWItch1.rar.zip
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Go to solution
Nagaraja Thanthry
Cisco Employee
Cisco Employee
In response to Md. Sultan Al Arif

‎08-29-2010 08:36 PM

Hello,

The two switches are on different IP subnets.

On 3560:

interface Vlan1

ip address 10.99.43.7 255.255.255.0

no ip route-cache

On 2960:

interface Vlan1

description "Management VLAN"

ip address 10.99.15.5 255.255.255.128

no ip route-cache

So, they cannot talk to each other. One way this could work is if you change

the subnet mask to /16 i.e. 255.255.0.0.

Hope this helps.

Regards,

NT

0 Helpful

Go to solution
Md. Sultan Al Arif
Level 1
Level 1
In response to Nagaraja Thanthry

‎08-29-2010 08:55 PM

Hi Nagraja

Thanks for the post. Last few days its worked here with this configuration. I will chnage my Subnet.

Best Regards

Sultan Al Arif

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