EtherChannel Question.

I am working through Todds book, page 526 EtherChannel. Can somebody shed any light on this for me.

I cannot select interfaces to add to a newly created EtherChannel. As it says in the book. I understand that my IOS may be out of date but surely if the port-channel command is available then there should be a way to add ports.

The commands are

Switch1#config t
Enter configuration commands, one per line. End with CNTL/Z.
Switch1(config)#int por
Switch1(config)#int port-c
Switch1(config)#int port-channel 1
Switch1(config-if)#int
Switch1(config-if)#int
Switch1(config-if)#in?
% Unrecognized command
Switch1(config-if)#int ?
% Unrecognized command
Switch1(config-if)#int

Available commands:

Switch1(config)#int port-channel 1
Switch1(config-if)#?
Interface configuration commands:
arp Set arp type (arpa, probe, snap) or timeout
bandwidth Set bandwidth informational parameter
bgp-policy Apply policy propogated by bgp community string
carrier-delay Specify delay for interface transitions
cdp CDP interface subcommands
dampening Enable event dampening
default Set a command to its defaults
delay Specify interface throughput delay
description Interface specific description
duplex Configure duplex operation.
eou EAPoUDP Interface Configuration Commands
ethernet Ethernet interface parameters
exit Exit from interface configuration mode
fair-queue Enable Fair Queuing on an Interface
flowcontrol Configure flow operation.
help Description of the interactive help system
hold-queue Set hold queue depth
ip Interface Internet Protocol config commands
keepalive Enable keepalive
l2protocol-tunnel Tunnel Layer2 protocols
load-interval Specify interval for load calculation for an
interface
logging Configure logging for interface
macro Command macro
max-reserved-bandwidth Maximum Reservable Bandwidth on an Interface
mvr MVR per port configuration
no Negate a command or set its defaults
random-detect Enable Weighted Random Early Detection (WRED) on an
Interface
service-policy Configure QoS Service Policy
shutdown Shutdown the selected interface
snmp Modify SNMP interface parameters
source Get config from another source
spanning-tree Spanning Tree Subsystem
speed Configure speed operation.
storm-control storm configuration
switchport Set switching mode characteristics
tcam tcam keyword
timeout Define timeout values for this interface
transmit-interface Assign a transmit interface to a receive-only
interface
tx-ring-limit Configure PA level transmit ring limit

Thanks Guys

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Comments

Excellent1

Try using the channel-group command. Have a look through the configuration on Cisco's site here for example: Catalyst 3550 Multilayer Switch Software Configuration Guide, 12.1(13)EA1 - Configuring EtherChannels [Cisco Catalyst 3550 Series Switches] - Cisco Systems

Futura

great thanks, tbh honest I had already looked at this page. I was a bit unsure if this was the same thing? I have heard of layer 3 port channels being mentioned and didn;t want to get sidetracked onto soemthing else.

vinbuck

Futura wrote: »

I am working through Todds book, page 526 EtherChannel. Can somebody shed any light on this for me.

I cannot select interfaces to add to a newly created EtherChannel. As it says in the book. I understand that my IOS may be out of date but surely if the port-channel command is available then there should be a way to add ports.

The commands are

Switch1#config t
Enter configuration commands, one per line. End with CNTL/Z.
Switch1(config)#int por
Switch1(config)#int port-c
Switch1(config)#int port-channel 1
Switch1(config-if)#int
Switch1(config-if)#int
Switch1(config-if)#in?
% Unrecognized command
Switch1(config-if)#int ?
% Unrecognized command
Switch1(config-if)#int
Thanks Guys

it was probably rejecting your initial command because in the interface Port-channel command, the P is capitalized. As for the rest, if channel-group isn't available, then you may not be able to do it. You might also try doing a layer-3 port-channel by using the no switchport command if that's available.

You might also try a show run all or show run verbose to see if there are any commands in the interface config that are preventing you from doing it. Also, try to issue a show etherchannel summary, that will at least let you know if the IOS you're using has the verification commands for etherchannel. Check the IOS notes for the version you have to see if it is supported.