Etherchannel Between 2821 Rtr and 3750 12s

Unanswered Question
Feb 2nd, 2009

Greetings,

Does anyone have experience configuring etherchannel Between 2821 Rtr and 3750 12S switch? Is this possible? Any links to cisco docs would be helpfull

Thank you

I have this problem too.
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Overall Rating: 3.5 (2 ratings)
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merryllem Mon, 02/02/2009 - 19:17

Thanks,

Now that my Etherchannel up, I still have one problem... I cant ping :(

Thanks,

Now that my Etherchannel up, I still have one problem... I cant ping :(

Rtr OUTPUT

show ip int brief

Interface IP-Address OK? Method Status Protocol

GigabitEthernet0/0 unassigned YES TFTP up up

GigabitEthernet0/1 unassigned YES TFTP up up

Port-channel1 1.1.1.1 YES manual up up

Int Configs

interface GigabitEthernet0/0

no ip address

load-interval 30

duplex auto

speed auto

channel-group 1

interface GigabitEthernet0/1

no ip address

load-interval 30

duplex auto

speed auto

channel-group 1

interface Port-channel1

ip address 1.1.1.1 255.255.255.252

show arp

Protocol Address Age (min) Hardware Addr Type Interface

Internet 1.1.1.1 - 0023.5ef0.3dc0 ARPA Port-channel1

Internet 1.1.1.2 0 Incomplete ARPA

SW OUTPUT

SHow etherchannel sum

Group Port-channel Protocol Ports

------+-------------+-----------+-----------------------------------------------

1 Po1(SU) - Gi1/0/12(P) Gi2/0/12(P)

Show int status

Gi1/0/12 connected 30 a-full a-1000 10/100/1000BaseTX SFP

Gi2/0/12 connected 30 a-full a-1000 10/100/1000BaseTX SFP

Po1 connected 30 a-full a-1000

Show ip int brief

Vlan30 14.13.0.46 YES TFTP up up

INT configs

interface GigabitEthernet1/0/12

switchport access vlan 30

switchport mode access

channel-group 1 mode on

interface GigabitEthernet2/0/12

switchport access vlan 30

switchport mode access

channel-group 1 mode on

interface Port-channel1

switchport access vlan 30

switchport mode access

spanning-tree portfast

interface Vlan30

ip address 1.1.1.2 255.255.255.252

no ip redirects

no ip proxy-arp

ip ospf message-digest-key 1 md5 7 123456

Show ARP

Protocol Address Age (min) Hardware Addr Type Interface

Internet 1.1.1.1 5 0023.5ef0.3dc0 ARPA Vlan30

Internet 1.1.1.2 - 0023.eac4.de44 ARPA Vlan30

One thing I notice is the ARP outputs. It seems that the router is not getting arp replies. while the sw is completing ARP process.

Thanks

OTHMAN KOUDY Wed, 11/20/2013 - 18:36

We solved this issue by upgrading IOS from 124-3 to 124-25g. The URL that Joseph posted was very helpful

Thanks,



Richard Burts Thu, 11/21/2013 - 06:36

Thanks for letting us know that you got it to work by changing versions. In the link that was posted it shows that 12.4(3) is too early a version to support EtherChannel.

I agree that the link Joseph posted is quite helpful and do not understand why someone gave it 2 stars. I think it deserves +5.

HTH

Rick

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