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SW02(config)#int range eth1/2 - 3
SW02(config-if-range)#shut
SW02(config-if-range)#chan
SW02(config-if-range)#channel-g
SW02(config-if-range)#channel-group
*Aug 17 17:13:44.098: %LINK-5-CHANGED: Interface Ethernet1/2, changed state to administratively down
*Aug 17 17:13:44.107: %LINK-5-CHANGED: Interface Ethernet1/3, changed state to administratively down
*Aug 17 17:13:45.098: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet1/2, changed state to down
*Aug 17 17:13:45.114: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet1/3, changed state to down
SW02(config-if-range)#channel-group 50 mode on
Command rejected (Port-channel50, Et1/2): Invalid group(slot) number

% Range command terminated because it failed on Ethernet1/2
SW02(config-if-range)#
*Aug 17 17:13:47.568: EthChnl assert failure: (group >= 1) && (group <= FEC_MAX_GROUPS): ../switch/pagp/pagp_switch_private.c: 39
*Aug 17 17:13:47.568: -Traceback= 8842B4Bz A3CA29Bz A3CA4F1z A3D6E99z A3C6D77z A3C9288z A3D9823z 877EE93z 877E180z 877CB6Dz 8794C38z 8793BCFz
SW02(config-if-range)#exit
SW02(config)#defau
SW02(config)#default in
SW02(config)#default interface eth1/2
Interface Ethernet1/2 set to default configuration
SW02(config)#default interface eth1/3
Interface Ethernet1/3 set to default configuration
SW02(config)#int po50
^
% Invalid input detected at '^' marker.

SW02(config)#int p
SW02(config)#int por
SW02(config)#int port-c
SW02(config)#int port-channel ?
<1-64> Port-channel interface number

SW02(config)#int port-channel 50
^
% Invalid input detected at '^' marker.

SW02(config)#do show ethercha su
Flags: D - down P - bundled in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use f - failed to allocate aggregator

M - not in use, minimum links not met
u - unsuitable for bundling
w - waiting to be aggregated
d - default port


Number of channel-groups in use: 3
Number of aggregators: 3

Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
10 Po10(SU) - Et0/0(P) Et0/1(P)
30 Po30(SU) - Et1/0(P) Et1/1(P)
40 Po40(SU) - Et0/2(P) Et0/3(P)

SW02(config)#int port-channel 50
^
% Invalid input detected at '^' marker.

SW02(config)#do show ver
Cisco IOS Software, Solaris Software (I86BI_LINUXL2-ADVENTERPRISE-M), Experimental Version 15.1(20131216:211730) [mmen 106]
Copyright (c) 1986-2013 by Cisco Systems, Inc.
Compiled Mon 16-Dec-13 13:50 by mmen

ROM: Bootstrap program is Linux

SW02 uptime is 1 hour, 30 minutes
System returned to ROM by reload at 0
System image file is "unix:/opt/unetlab/addons/iol/bin/i86bi-linux-l2-adventerprise-15.1b.b"
Last reload reason: Unknown reason


Linux Unix (Intel-x86) processor with 981578K bytes of memory.
Processor board ID 67108896
16 Ethernet interfaces
1024K bytes of NVRAM.

Configuration register is 0x0

SW02(config)#

when you try to create po 50 you got an error...

Later you put default config on interface dedicated for this PO

So normal if PO is absent....

E.