Cisco Ether-channel

This is the notes from my production environment setup of a Cisco Catalyst  6506 and a Cisco 3500Xl Switch

 

6500 Catalyst

Set the ports up for channelling

set port disable 2/1-2

set port channel 2/1-2 auto

set port channel enable 2/1-2

show port channel

 set port channel 2/1-2 mode on

 

 

3500XL

int giga0/1

port group 1

int giga0/2

port group 1

show port group

 

Between production Catalyst’s

Instead of setting the ether-channel to “on” like the config above the channel must be set to ”auto” so the PAgP packets are exchanged otherwise the channel will not come up.

The production catalysts will be a lot more involved, I will have to think about the ports being able to trunk VLANs and any other functions the current ports are performing.

The 6509 will be different config from the 3500XL’s. Cisco’s documentation shows the commands differ between the two platforms.

 

Change to make the channel four ports

6506

 

set port disable 1/1-2,2/1-2

set port channel 1/1-2,2/1-2

set port channel 1/1-2,2/1-2 auto

set port channel enable 1/1-2,2/1-2

 

Console> (enable) show port 1/2

Port Name Status Vlan Duplex Speed Type

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

1/2 Gigabit link 1-2 notconnect 1  full 1000 No Connector

 

Console> (enable) show port 2/2

* = Configured MAC Address



Port Name Status Vlan Duplex Speed Type

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

2/2 Gigabit link 2-2 connected trunk full 1000 1000BaseT

 

ROUTER2

int range gigaethernet 1/43 -46

 channel-group 50 mode desirable 

 shut

 no shut

 end

 

 

ROUTER2

Connection into GigabitEthernet1/46

Functions of the current port

interface GigabitEthernet1/46

 switchport

 switchport vlan mapping enable

 no ip address

 

ROUTER2#show int trunk
Port Mode Encapsulation Status Native vlan


Gi1/1 desirable n-802.1q trunking 1

Gi1/7 on 802.1q trunking 1

Gi1/8 on 802.1q trunking 1

Gi1/9 on 802.1q trunking 1

Gi1/10 on 802.1q trunking 1

Gi1/24 on 802.1q trunking 1

Gi1/26 on 802.1q trunking 1

Gi1/27 on 802.1q trunking 1

Gi1/28 on 802.1q trunking 1

Gi1/30 on 802.1q trunking 1

Gi1/44 desirable n-802.1q trunking 1

Gi1/46 desirable n-isl trunking 1

Gi6/2 desirable n-isl trunking 1

Gi9/1 desirable n-802.1q trunking 1

Gi9/2 desirable n-802.1q trunking 1

Gi9/22 on 802.1q trunking 1

Gi9/26 on 802.1q trunking 1

Gi9/34 on 802.1q trunking 1

Gi9/43 on 802.1q trunking 1

Gi9/44 on 802.1q trunking 1



Port Vlans allowed on trunk

Gi1/1 1-4094

Gi1/7 1-19,22-30,33-69,71-79,81-84,86-89,91-95,97,100-665,667-4094

Gi1/8 1-19,22-30,33-69,71-79,81-84,86-89,91-95,97,100-665,667-4094

Gi1/9 1-19,22-30,33-69,71-79,81-84,86-89,91-95,97,100-665,667-4094

Gi1/10 1-19,22-30,33-69,71-79,81-84,86-89,91-95,97,100-665,667-4094

Gi1/24 1-4094

Gi1/26 1-4094

Gi1/27 1-4094

Gi1/28 1-29,32-4094

Gi1/30 1-19,22-30,33-69,71-79,81-84,86-89,91-95,97,100-665,667-4094

Gi1/44 1-4094

Gi1/46 1-4094

Gi6/2 1-4094

Gi9/1 1-4094

Gi9/2 1-4094

Gi9/22 1-19,22-30,33-69,71-79,81-84,86-89,91-95,97,100-665,667-4094

Gi9/26 1-4094

Gi9/34 1-19,22-30,33-69,71-79,81-84,86-89,91-95,97,100-665,667-4094

Gi9/43 1-19,22-30,33-69,71-79,81-84,86-89,91-95,97,100-665,667-4094

Gi9/44 1-19,22-30,33-69,71-79,81-84,86-89,91-95,97,100-665,667-4094



Port Vlans allowed and active in management domain

Gi1/1 1-2,4,10,12,20-21,25-26,31,33,70,75,80,85,90,96,98-102,104,503,666,999

Gi1/7 1-2,4,10,12,25-26,33,75,100-102,104,503,999

Gi1/8 1-2,4,10,12,25-26,33,75,100-102,104,503,999

Gi1/9 1-2,4,10,12,25-26,33,75,100-102,104,503,999

Gi1/10 1-2,4,10,12,25-26,33,75,100-102,104,503,999

Gi1/24 1-2,4,10,12,20-21,25-26,31,33,70,75,80,85,90,96,98-102,104,503,666,999

Gi1/26 1-2,4,10,12,20-21,25-26,31,33,70,75,80,85,90,96,98-102,104,503,666,999

Gi1/27 1-2,4,10,12,20-21,25-26,31,33,70,75,80,85,90,96,98-102,104,503,666,999

Gi1/28 1-2,4,10,12,20-21,25-26,33,70,75,80,85,90,96,98-102,104,503,666,999

Gi1/30 1-2,4,10,12,25-26,33,75,100-102,104,503,999

Gi1/44 1-2,4,10,12,20-21,25-26,31,33,70,75,80,85,90,96,98-102,104,503,666,999

Gi1/46 1-2,4,10,12,20-21,25-26,31,33,70,75,80,85,90,96,98-102,104,503,666,999

Gi6/2 1-2,4,10,12,20-21,25-26,31,33,70,75,80,85,90,96,98-102,104,503,666,999

Gi9/1 1-2,4,10,12,20-21,25-26,31,33,70,75,80,85,90,96,98-102,104,503,666,999



Port Vlans allowed and active in management domain

Gi9/2 1-2,4,10,12,20-21,25-26,31,33,70,75,80,85,90,96,98-102,104,503,666,999

Gi9/22 1-2,4,10,12,25-26,33,75,100-102,104,503,999

Gi9/26 1-2,4,10,12,20-21,25-26,31,33,70,75,80,85,90,96,98-102,104,503,666,999

Gi9/34 1-2,4,10,12,25-26,33,75,100-102,104,503,999

Gi9/43 1-2,4,10,12,25-26,33,75,100-102,104,503,999

Gi9/44 1-2,4,10,12,25-26,33,75,100-102,104,503,999



Port Vlans in spanning tree forwarding state and not pruned

Gi1/1 1,12

Gi1/7 1-2,4,10,12,25-26,33,75,100-102,104,503,999

Gi1/8 1-2,4,10,12,25-26,33,75,100-102,104,503,999

Gi1/9 1-2,4,10,12,25-26,33,75,100-102,104,503,999

Gi1/10 1-2,4,10,12,25-26,33,75,100-102,104,503,999

Gi1/24 1-2,4,10,12,20-21,25-26,31,33,70,75,80,85,90,96,98-102,104,503,666,999

Gi1/26 1-2,4,10,12,20-21,25-26,31,33,70,75,80,85,90,96,98-102,104,503,666,999

Gi1/27 1-2,4,10,12,20-21,25-26,31,33,70,75,80,85,90,96,98-102,104,503,666,999

Gi1/28 1-2,4,10,12,20-21,25-26,33,70,75,80,85,90,96,98-102,104,503,666,999



Port Vlans in spanning tree forwarding state and not pruned

Gi1/30 1-2,4,10,12,25-26,33,75,100-102,104,503,999

Gi1/44 1

Gi1/46 1-2,10,666

Gi6/2 1-2,4,10,12,20-21,25-26,31,33,70,75,80,85,90,96,98-102,104,503,666,999

Gi9/1 1

Gi9/2 1

Gi9/22 1-2,4,10,12,25-26,33,75,100-102,104,503,999

Gi9/26 1-2,4,10,12,20-21,25-26,31,33,70,75,80,85,90,96,98-102,104,503,666,999

Gi9/34 1-2,4,10,12,25-26,33,75,100-102,104,503,999

Gi9/43 1-2,4,10,12,25-26,33,75,100-102,104,503,999

Gi9/44 1-2,4,10,12,25-26,33,75,100-102,104,503,999

ROUTER2#

 

 

 

 

 

 

 

 

 

 

Configuration

 

 

!

interface Port-channel1

switchport

no ip address

shutdown

!

 

 

Ok so the port channel is setup, note its currently shutdown

 

Now we need to add the configuration into the two port’s

 

int range gigaethernet 1/46 -47

channel-group 1 mode desirable

shut

no shut

end

 

Note the desirable maybe used as on ?

 

show int giga 1/46 etherchannel

port-channel load-balance

show etherchannel load-bal 

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