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Creating Etherchannel on Catalyst 3550

saidfrh18
Level 1
Level 1

‎06-25-2013 03:11 PM - edited ‎03-07-2019 02:04 PM

I have two 3550s to create  an EtherChannel. Can I use any ports on the switches for the above, must the ports be Gig ports? assigning ports fa 0/9 - 10 on switches for channel-group 1 doesn't work.

DSW1#sh ip interface brief
Interface              IP-Address      OK? Method Status                Protocol
Vlan1                  unassigned      YES unset  administratively down down
FastEthernet0/1        unassigned      YES unset  down                  down
FastEthernet0/2        unassigned      YES unset  down                  down
FastEthernet0/3        unassigned      YES unset  down                  down
FastEthernet0/4        unassigned      YES unset  down                  down
FastEthernet0/5        unassigned      YES unset  down                  down
FastEthernet0/6        unassigned      YES unset  down                  down
FastEthernet0/7        unassigned      YES unset  down                  down
FastEthernet0/8        unassigned      YES unset  down                  down
FastEthernet0/9        unassigned      YES unset  down                  down
FastEthernet0/10       unassigned      YES unset  down                  down
FastEthernet0/11       unassigned      YES unset  down                  down
FastEthernet0/12       unassigned      YES unset  down                  down
FastEthernet0/13       unassigned      YES unset  down                  down
FastEthernet0/14       unassigned      YES unset  down                  down
FastEthernet0/15       unassigned      YES unset  down                  down
FastEthernet0/16       unassigned      YES unset  down                  down
FastEthernet0/17       unassigned      YES unset  down                  down
FastEthernet0/18       unassigned      YES unset  down                  down
FastEthernet0/19       unassigned      YES unset  down                  down
FastEthernet0/20       unassigned      YES unset  down                  down
FastEthernet0/21       unassigned      YES unset  down                  down
FastEthernet0/22       unassigned      YES unset  down                  down
FastEthernet0/23       unassigned      YES unset  down                  down
FastEthernet0/24       unassigned      YES unset  down                  down
GigabitEthernet0/1     unassigned      YES unset  down                  down
GigabitEthernet0/2     unassigned      YES unset  down                  down
Port-channel1          unassigned      YES unset  down                  down
DSW1#

Vlan1                      unassigned      YES unset  administratively down down

FastEthernet0/1            unassigned      YES unset  down                  down

FastEthernet0/2            unassigned      YES unset  down                  down

FastEthernet0/3            unassigned      YES unset  down                  down

FastEthernet0/4            unassigned      YES unset  down                  down

FastEthernet0/5            unassigned      YES unset  down                  down

FastEthernet0/6            unassigned      YES unset  down                  down

FastEthernet0/7            unassigned      YES unset  down                  down

FastEthernet0/8            unassigned      YES unset  down                  down

FastEthernet0/9            unassigned      YES unset  down                  down

FastEthernet0/10           unassigned      YES unset  down                  down

FastEthernet0/11           unassigned      YES unset  down                  down

FastEthernet0/12           unassigned      YES unset  down                  down

FastEthernet0/13           unassigned      YES unset  down                  down

FastEthernet0/14           unassigned      YES unset  down                  down

FastEthernet0/15           unassigned      YES unset  down                  down

FastEthernet0/16           unassigned      YES unset  down                  down

FastEthernet0/17           unassigned      YES unset  down                  down

FastEthernet0/18           unassigned      YES unset  down                  down

FastEthernet0/19           unassigned      YES unset  down                  down

FastEthernet0/20           unassigned      YES unset  down                  down

FastEthernet0/21           unassigned      YES unset  down                  down

FastEthernet0/22           unassigned      YES unset  down                  down

FastEthernet0/23           unassigned      YES unset  down                  down

FastEthernet0/24           unassigned      YES unset  down                  down

GigabitEthernet0/1         unassigned      YES unset  down                  down

GigabitEthernet0/2         unassigned      YES unset  down                  down

Port-channel1              unassigned      YES unset  down                  down

DSW2#

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0 Helpful
6 Replies 6

saidfrh18
Level 1
Level 1

‎06-25-2013 03:18 PM

Neither 3550 switches like,

DSW2(config)#vtp domain name BCMSN. 

DSW1(config)#vtp domain name BCMSN

                             ^

% Invalid input detected at '^' marker.

DSW1(config)#vtp mode server

Setting device to VTP SERVER mode

DSW1(config)#vtp domain name BCMSN

                             ^

% Invalid input detected at '^' marker.

How do you assign VTP domain name?

0 Helpful

shine pothen
Level 3
Level 3

‎06-25-2013 03:19 PM

for configuring Etherchannel you can use any of the port GigabitEthernet or else fast ethernet port.

0 Helpful

shine pothen
Level 3
Level 3
In response to shine pothen

‎06-25-2013 03:21 PM

An EtherChannel consists of individual Fast Ethernet or Gigabit Ethernet links bundled into a single logical link,The EtherChannel provides full-duplex bandwidth up to 800 Mbps (Fast EtherChannel) or 8 Gbps (Gigabit EtherChannel) between your switch,Each EtherChannel can consist of up to eight compatibly configured Ethernet interfaces. All interfaces in each EtherChannel must be the same speed, and all must be configured as either Layer 2 or Layer 3 interfaces

If you need help in configuring the ports please us know.

Shine

0 Helpful

saidfrh18
Level 1
Level 1
In response to shine pothen

‎06-25-2013 03:32 PM

kindly advise to set up Etherchannel on the 3550 switchs.  All ports have been given the no shut command

The following is the config on both 3550 switches.

interface range fa 0/9 - 10

channel-group 1 mode desirable

interface port-channel 1

switchport trunk encap dot1q

switchport mode trunk

vtp mode server

[doesn't like] domain name BCMSN

Thanks.

0 Helpful

InayathUlla Sharieff
Cisco Employee
Cisco Employee
In response to saidfrh18

‎06-25-2013 05:14 PM

Hi Saidf,

Let me resummarize this:

SW(3550)=====F0/9 -10==========Port-channel1============F0/9-10===SW2(3550)

Things to be checked:

1- Make sure the layer 1 is up. (I.e the links F0/9-10 are up state on both the switches) only then you will be able to form the etherchannel.

2- Shut down the ports at SW1.

3- Create Port-Channel on both the ends

4- Map the Port-Channel to the Physical interface.

5- Bring back the physical ports( i.e unshut the ports.)

6- Issue show etherchannel summary. (give it a 1 min time to get synchrnize).

B) Changing the VTP domain.

3500-5(config)# vtp domain BCMSN  >>>>>> This is the command to change the domain. (You should not use the name keyword under the vtp domain)

Changing VTP domain name from server to BCMSN

HTH

Regards

Inayath

*Plz rate all usefull posts.

0 Helpful

glen.grant
VIP Alumni
VIP Alumni

‎06-25-2013 06:20 PM

conf t

vtp domain XXX

vtp mode server

int port-channel 1

switchport

switchport encapsulation dot1q

switchport mode dynamic desirable

switchport trunk allowed vlan x

int range f0/9 -10

switchport

switchport encapsulation dot1q

switchport mode dynamic desirable

switchport trunk allowed vlan x

channel-group 1 mode desirable non-silient

0 Helpful
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