3750 stack configuration for Nexus 5010

markra4508 · ‎03-02-2011

Nexus 5010 Setup

interface Eth1/1
switchport mode trunk
switchport trunk native vlan 99
speed 1000

interface Eth1/2
switchport mode trunk
switchport trunk native vlan 99
speed 1000

WS-3750G-48T Master Stack Ports IOS 12.2(35)SE5
!
interface Gigabiteethernet 5/0/49
switchport trunk encapsulation dot1q
switchport trunk native vlan 99
switchport mode trunk

!
interface Gigabiteethernet 5/0/50
switchport trunk encapsulation dot1q
switchport trunk native vlan 99
switchport mode trunk

Missing something here 3750 stack uplink to Nexus 5010 on Eth1/1 and Eth1/2;
Used ip route pointing towards Nexus for 3750 default gateway command, show cdp neighbor shows
gi5/0/49 & 50 but unable to ping 3750 stack from Nexus all VLANS allowed.

Any help is appreciated

ma

andtoth · ‎03-02-2011

Hi,

Could you please share the interface vlan99 configuration from both sides?

Which "ip route" command did you add exactly?

Please also share the output of the 'sh port-channel su' and 'sh etherchannel su' commands from the 3750 and Nexus 5000 switches.

Best regards,

Andras

markra4508 · ‎03-04-2011

Thanks for responding,

If possible

What are the default settings for a Nexus 5010 IOS 4.2.1
for connecting a 3750G switch. In particularly the (settings for) Native VLAN on both sides. The current documentation on the web for the 5010 does not provide any information. If their are links please provide. From setup of port-channel on both sides to setup of the Native VLAN it seems the Nexus is blocking the 3750 switch stack which is basically just another switch.

thanks,

ma

andtoth · ‎03-16-2011

Hi,

If you could attach the full configuration from both devices, that would be great.

Also, an output of sh cdp nei, and sh interface, sh int switchport, sh int trunk commands from all affected interfaces could help.

Could you please be more specific, what would you like to achieve? What is blocked and how do you see it, is it blocked by STP? Please attach the relevant outputs where you see it's blocked.

Best regards,

Andras