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Router Port-Channel to switch

David Lee
Level 1
Level 1

I am trying to create a Port-Channel between a Cisco 1921 router and a 2960 Switch.  Either I am missing something or I am having a temporary memory loss.  I cant seem to get a port-channel to come up between the two.  I've done it numerous times on a 3750X switch and end devices, but not with a router and a switch.  The switch gives back an error message

LACP currently not enabled on the remote port.

When I try to turn LACP on the router port, it doesnt work.  I know that I am missing something simple. 

1 Accepted Solution

Accepted Solutions

Borgenstrand
Level 1
Level 1

Hi David,

LACP might be supported only on etherswitch modules and not on the built-in ports.

Does it work if you do not use LACP but just enable port-channel group manually?

https://supportforums.cisco.com/discussion/11227006/lacp-isr-g2-1921-how

View solution in original post

5 Replies 5

Borgenstrand
Level 1
Level 1

Hi David,

LACP might be supported only on etherswitch modules and not on the built-in ports.

Does it work if you do not use LACP but just enable port-channel group manually?

https://supportforums.cisco.com/discussion/11227006/lacp-isr-g2-1921-how

Helllo

Please post the config -but a standard routed port  etherchannel config would 

Int port-channel 10

ip address X.x.x. y.y.y.y.

default interface range X/X - x

interface range X/X -x

no switchport

shut

channel-group 10 mode active

No shut

res

paul


Please rate and mark as an accepted solution if you have found any of the information provided useful.
This then could assist others on these forums to find a valuable answer and broadens the community’s global network.

Kind Regards
Paul

here is the show-run.  I am using a HWIC-2FE to try and make this work.

C1921#sh run
Building configuration...

Current configuration : 1514 bytes
!
! Last configuration change at 19:23:53 UTC Sun May 15 2016
version 15.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname C1921
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
!
ip cef
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
license udi pid CISCO1921/K9 sn FTX
!
!
!
redundancy
!
interface Port-channel1
 ip address 192.168.100.252 255.255.255.0
!
interface Embedded-Service-Engine0/0
 no ip address
 shutdown
!
interface GigabitEthernet0/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface FastEthernet0/0/0
 no ip address
 duplex auto
 speed auto
 channel-group 1
!
interface FastEthernet0/0/1
 no ip address
 duplex auto
 speed auto
 channel-group 1
!
interface FastEthernet0/1/0
 no ip address
!
interface FastEthernet0/1/1
 no ip address
!
interface FastEthernet0/1/2
 no ip address
!
interface FastEthernet0/1/3
 no ip address
!
interface Vlan1
 no ip address
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
!
!
!
!
control-plane
!
!
!
line con 0
line aux 0
line 2
 no activation-character
 no exec
 transport preferred none
 transport output lat pad telnet rlogin lapb-ta mop udptn v120 ssh
 stopbits 1
line vty 0 4
 login
 transport input all
!
scheduler allocate 20000 1000
!
end

C1921#

David Lee
Level 1
Level 1

That was it. I turned LACP off on the switch and the Ether-channel came up.

C1921#sh int port-channel 1
Port-channel1 is up, line protocol is up
  Hardware is FEChannel, address is 5087.89c0.c49e (bia 0000.0000.0000)
  Internet address is 192.168.100.252/24
  MTU 1500 bytes, BW 200000 Kbit/sec, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Unknown duplex, Unknown Speed
  ARP type: ARPA, ARP Timeout 04:00:00
    No. of active members in this channel: 2
        Member 0 : FastEthernet0/0/0 , Full-duplex, 100Mb/s
        Member 1 : FastEthernet0/0/1 , Full-duplex, 100Mb/s
    No. of Non-active members in this channel: 0
    No. of PF_JUMBO supported members in this channel : 0
  Last input 00:00:14, output never, output hang never

how do you turn off lacp?
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