2GB EtherChannel Cisco 3750x-Cisco 2960S

[Corneliu Paunescu]

Hello,

Im trying to setup an EtherChannel between my 3750 stack and my 2960S stack.

I have 2 3750x in stack form. (2 switches).

I have 4 2960s in stack form. (4 switches).

I need to create a 2GB channel between them. My core is the 3750, and my 4 stack 2960s is on another floor, so I want to create a 2GB pipe between them.

I know you can create a PO between them, but what I want to do is create a 2GB pipe between them that run at the same time, active on both 1GB ports.

Is that possible and how? This is my current setup so far:

Switch Stack 3750

interface Port-channel10
 description ETHSW04-1.5
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1,210,220,214,216,220,306,406
 switchport mode trunk
 snmp trap mac-notification change added
 snmp trap mac-notification change removed
 spanning-tree guard loop
 spanning-tree cost 15

interface Port-channel11
 description BRP-Uplink to ETHSW04-1.5
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1,210,220,214,216,220,306,406
 switchport mode trunk
 snmp trap mac-notification change added
 snmp trap mac-notification change removed
 spanning-tree guard loop
 spanning-tree cost 1

interface GigabitEthernet1/0/39
 description Uplink to ETHSW04-1.5
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1,210,220,214,216,220,306,406
 switchport mode trunk
 snmp trap mac-notification change added
 snmp trap mac-notification change removed
 spanning-tree guard loop
 channel-protocol lacp
 channel-group 10 mode active

interface GigabitEthernet1/0/40
 description Uplink to ETHSW04-1.5
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1,210,220,214,216,220,306,406
 switchport mode trunk
 snmp trap mac-notification change added
 snmp trap mac-notification change removed
 spanning-tree guard loop
 channel-protocol lacp
 channel-group 10 mode active

interface GigabitEthernet2/0/39
 description Uplink to BRP-Uplink to ETHSW04-1.5
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1,210,220,214,216,220,306,406
 switchport mode trunk
 snmp trap mac-notification change added
 snmp trap mac-notification change removed
 spanning-tree guard loop
 channel-protocol lacp
 channel-group 11 mode active

interface GigabitEthernet2/0/40
 description Uplink to BRP-Uplink to ETHSW04-1.5
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1,210,220,214,216,220,306,406
 switchport mode trunk
 snmp trap mac-notification change added
 snmp trap mac-notification change removed
 spanning-tree guard loop
 channel-protocol lacp
 channel-group 11 mode active

---------------------------------------------------------------------------------

Switch stack 2960s

interface Port-channel1
 description Uplink to CORE01
 switchport trunk allowed vlan 1,210,220,214,216,220,306,406
 switchport mode trunk
 snmp trap mac-notification change added
 snmp trap mac-notification change removed
 spanning-tree guard loop
 spanning-tree cost 15

interface Port-channel2
 description BRP-Uplink to CORE02
 switchport trunk allowed vlan 1,210,220,214,216,220,306,406
 switchport mode trunk
 snmp trap mac-notification change added
 snmp trap mac-notification change removed
 spanning-tree guard loop
 spanning-tree cost 1

interface GigabitEthernet1/0/47
 description CORE1-G1/0/39
 switchport trunk allowed vlan 1,210,220,214,216,220,306,406
 switchport mode trunk
 snmp trap mac-notification change added
 snmp trap mac-notification change removed
 spanning-tree guard loop
 channel-protocol lacp
 channel-group 1 mode active

interface GigabitEthernet1/0/48
 description CORE1-G1/0/40
 switchport trunk allowed vlan 1,210,220,214,216,220,306,406
 switchport mode trunk
 snmp trap mac-notification change added
 snmp trap mac-notification change removed
 spanning-tree guard loop
 channel-protocol lacp
 channel-group 1 mode active

interface GigabitEthernet4/0/47
 description BRP-CORE2-G2/0/39
 switchport trunk allowed vlan 1,210,220,214,216,220,306,406
 switchport mode trunk
 snmp trap mac-notification change added
 snmp trap mac-notification change removed
 spanning-tree portfast
 spanning-tree guard loop
 channel-protocol lacp
 channel-group 2 mode active
!
interface GigabitEthernet4/0/48
 description BRP-CORE2-G2/0/40
 switchport trunk allowed vlan 1,210,220,214,216,220,306,406
 switchport mode trunk
 snmp trap mac-notification change added
 snmp trap mac-notification change removed
 spanning-tree portfast
 spanning-tree guard loop
 channel-protocol lacp
 channel-group 2 mode active

Thanks...

[DJX995 · Accepted solution]

Not possible AFAIK.
LACP will provide load balancing and redundancy which is pretty good for most use cases.
Other then that, you would have to look at 10GB uplinks between switches for more bandwidth.

[Corneliu Paunescu]

Arent there different kinds of etherchannels you can setup? for LACP...

I thought you can setup redundant, passive passive, passive active, etc. How would I do that.

Thanks...

[DJX995]

The modes for Etherchannel are just the negotiation protocol that is in use.

  active     Enable LACP unconditionally
  auto       Enable PAgP only if a PAgP device is detected
  desirable  Enable PAgP unconditionally
  on         Enable Etherchannel only
  passive    Enable LACP only if a LACP device is detected

Beyond that, you can configure the load balancing method.

[Corneliu Paunescu]

Can you please explain the load balancing method?

Thanks....

[DJX995]

Please refer to this guide for detailed info on configuring LACP and Load Balancing.

Basically, you can define manual weights for each link.
You can also configure the hashing method used to determine which link to use for communications.

http://www.cisco.com/c/en/us/td/docs/ios/cether/configuration/guide/ce_lnkbndl.html

[Corneliu Paunescu]

Arent there different kinds of etherchannels you can setup? for LACP...

I thought you can setup redundant, passive passive, passive active, etc. How would I do that.

Thanks...