Cisco 3570 and 2960-S

[Jasonlees]

I need help with a configuration between 2 switches using an sfp. I need to configure the ports on the 2960s to recognize the connection and pass traffic to the new building. Secondly configure an internal vlan tagged to the 2960 with an internal vlan for testing internet connectivity. Let me know how this can be done.

Here is what I have so far on the fiber connect interfaces:


Interface G0/1
Description to switch 1
switchport mode trunk
switchport trunk allowed vlan 10,101 - should this be carrier or internal vlans?
speed nonegotiate


Interface G0/5
Description to switch 2
switchport mode trunk
switchport trunk allowed vlan 10,101 - should this be carrier or internal vlans?
speed nonegotiate


Thanks,

 

[Viconsul]

More info need!
What kind of link runs between the two buildings, is it a layer 2 link? Also what models are the switches?
That said, you will need to specify the encapsulation on the trunk ports if the switch model support both isl and dot1q, e.g Cisco 3750.

 

[Jasonlees]

I have a 3570 on one end and a 2960 on the other connected to single mode fiber on each end with SC connector

 

[Viconsul]

The config below should work.

Interface G0/1
Description to switch 1
switchport mode trunk
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,101 - this should be internal vlans?
speed nonegotiate
switchport nonegotiate

I believe the 2960 only supports IEEE standard encapsulation.

 

[Jasonlees]

For some reason its not taking the dot1q command on this switch

 

[ISPKing]

Just for clarity is it a 3560 or a 3750, as there is no 3570.

CCNP

 

[Viconsul]

I agree with ISP and you should still be able to specify the trunking encapsulation on either 3560 or 3750. If I remember correctly, 2960 only support IEEE 802.1q, so that is the default on these switches.

 

[burtsbees]

Anything after the 2950EI will not do ISL trunking (THANK GOD! Can you say Giant Frames?lol).

/

tim@tim-laptop ~ $ sudo apt-get install windows
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Couldn't find package windows...Thank Goodness!

 

[ADB100]

Anything after the 2950EI will not do ISL trunking (THANK GOD! Can you say Giant Frames?lol).

3560/3750? Plus the 6500? They all do ISL - no need for it, but they support it. 2960 is 802.1q only though. No real need for it any more - if you have access switches that only support ISL then they are EOL and out of support anyway...
Andy