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pschutter317
Beginner

What is the best method to setup ports between 2 switches

Hello.....

We have multiple switches(Cisco 4510, 4507R, 3560's) within our network. I've been looking over the port settings between them and noticed that not all ports that are connected directly from switch to switch are trunked the same. Some are desirable on one switch and forced truck on the other switch.

I would really like to know what is the prefered method for trunking 2 switches.

Thanks

5 REPLIES 5
Leo L
VIP Community Legend

I never use "desirable".  It's always "nonegotiate".

And Trunks allow only VLANs used.

If the links are fibre then enable UDLD. 

bhargavdesai
Beginner

I would like hardcore both side port as TRUNK ports along with Nonegotiate also enable UDLD for Fiber ports.

Hardcore the encapsulation type to 802.1q or ISL (802.1q is efficient way)

Also check for VLAN traffic that you want to pass through the trunk.

H2H

Bhargav

Alessio Andreoli
Contributor

One more..

define te allowed vlans list on each trunk port and consider BFD  and NSF eventual settings for HA environments. Consideration of what the native vlan is can help if you need to troubleshoot your network.

depending from the context also some STP(uplinks , backbone fast recovery ec..) and Security settings (trust or not) could be required.

HTH

Alessio

I forgot the Native Vlan (In case u are using 802.1q)

Thx Alessio

H2H

Bhargav

nkarthikeyan
Rising star

Hi Patrick,

These will be the uplink commands that you are looking for

switchport trunk encapsulation dot1q

switchport trunk native vlan

switchport trunk allowed vlan

switchport mode trunk

switchport nonegotiate

load-interval

priority-queue out

udld port aggressive

ip dhcp snooping trust