02-11-2010 02:04 PM - last edited on 03-25-2019 03:28 PM by ciscomoderator
I have a stack of 2 3750(E)s with the "c3750-ipservices-mz.122-35.SE5/c3750-ipservices-mz.122-35.SE5.bin" image that will not allow me to assign an ip address to a port-channel interface. Please help.
02-11-2010 02:12 PM
L3 port-channel does not exist.
Either assign the IP address to a VLAN that is trunked on the port-channel, or remove port-channel, disable switchport, assing different addresses to the multiple links.
The results will be very similar.
02-11-2010 02:16 PM
is there another version of IOS that i can download to support an l3 port-channel? Because it does exist on my other network gear. i could assign ip addresses to multiple ints creating point-to-point connections, however that's not the most desired way. thank you.
02-11-2010 03:14 PM
p.bevilacqua wrote:
L3 port-channel does not exist.
Either assign the IP address to a VLAN that is trunked on the port-channel, or remove port-channel, disable switchport, assing different addresses to the multiple links.
The results will be very similar.
Paolo
L3 etherchannel does indeed exist. It allows you to bundle multiple physical links into one logical link and then assign an IP address to that logical link -
Jon
02-11-2010 03:18 PM
I should have said, does not exist on the 3750.
Not a big deal considering you have two alternative methods to achieve the same.
02-11-2010 03:26 PM
p.bevilacqua wrote:
I should have said, does not exist on the 3750.
Not a big deal considering you have two alternative methods to achieve the same.
Trouble is it does exist on the 3750 -
agree that you could use SVI with L2 access ports but then you are not removing STP from the links.
Jon
02-11-2010 03:26 PM
zdrepaul wrote:
I have a stack of 2 3750(E)s with the "c3750-ipservices-mz.122-35.SE5/c3750-ipservices-mz.122-35.SE5.bin" image that will not allow me to assign an ip address to a port-channel interface. Please help.
Can you post relevant config.
Jon
02-11-2010 03:36 PM
#conf t
Enter configuration commands, one per line. End with CNTL/Z.
(config)#int po22
(config-if)#ip address 192.168.125.121 255.255.255.252
^
% Invalid input detected at '^' marker.
(config-if)#ip ?
Interface IP configuration subcommands:
admission Apply Network Admission Control
arp Configure ARP features
dhcp Configure DHCP parameters for this interface
dhcp DHCP
igmp IGMP interface commands
verify verify
vrf VPN Routing/Forwarding parameters on the interface
(config-if)#ip
02-11-2010 03:37 PM
zdrepaul wrote:
#conf t
Enter configuration commands, one per line. End with CNTL/Z.
(config)#int po22
(config-if)#ip address 192.168.125.121 255.255.255.252
^
% Invalid input detected at '^' marker.(config-if)#ip ?
Interface IP configuration subcommands:
admission Apply Network Admission Control
arp Configure ARP features
dhcp Configure DHCP parameters for this interface
dhcp DHCP
igmp IGMP interface commands
verify verify
vrf VPN Routing/Forwarding parameters on the interface(config-if)#ip
I meant could you actually post the config off the switch.
Jon
02-11-2010 03:39 PM
i don't think the config is going to help us figure this one out; i think it has to with the version of ios the switch is running.
02-11-2010 03:39 PM
Have you configured "no switchport" under the port-channel interface ie.
int po22
no switchport
ip address .....
Jon
02-11-2010 03:40 PM
THAT WAS IT!!!!! thank you so much!!!!!
02-11-2010 03:44 PM
No problem, glad to have helped.
Jon
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