Channel group command not available in switchport

[MriduD]

Hello All,

I have a Cisco 1121-4P router running IOS XE 17.9.4a and I dont see the channel group option under any of the 4 switchports. The option shows up in WAN port, but I would like to utilize two switchports for the same VLAN and keep it under the port channel. We are getting punt drop errors for having multiple connections to a switch. 

Here, does configuring a port channel and keeping the connecting switchports as access/trunk ports work for this punt issue? Please advise.

Mar 27 00:09:11: %IOSXE-5-PLATFORM: R0/0: cpp_cp: QFP:0.0 Thread:000 TS:00004093261880457800 %PUNT_INJECT-5-DROP_PUNT_CAUSE: punt policer drops packets, cause: subnet-bcast (0x3c) from Vlan1 src ip: 192.168.19.69
Mar 27 01:16:41: %IOSXE-5-PLATFORM: R0/0: cpp_cp: QFP:0.0 Thread:000 TS:00004097312353004400 %PUNT_INJECT-5-DROP_PUNT_CAUSE: punt policer drops packets, cause: unknown-encap (0x3) from Vlan1
Mar 27 01:22:41: %IOSXE-5-PLATFORM: R0/0: cpp_cp: QFP:0.0 Thread:000 TS:00004097672317534840 %PUNT_INJECT-5-DROP_PUNT_CAUSE: punt policer drops packets, cause: arp (0x7) from Vlan1 src mac: 207B.D220.E6D4
Mar 27 01:22:50: %IOSXE_QFP-2-LOAD_EXCEED: Slot: 0, QFP:0, Load 81% exceeds the setting threshold 80%.
5 secs traffic rate on QFP: Total Input: 98801 pps (98.8 kpps), 112579784 bps (112.6 mbps), Total Output: 19 pps (0.0 kpps), 68000 bps (0.1 mbps).

System image file is "flash:c1100-universalk9.17.09.04a.SPA.bin"

Switchport gi0/1/0

vs WAN port Gi0/0/1

Host#sh vlan brief

VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi0/1/0, Gi0/1/1
2 VLAN0002 active Gi0/1/3
3 VLAN0003 active Gi0/1/2

Host #sh run int po1
Building configuration...

Current configuration : 67 bytes
!
interface Port-channel1
switchport
switchport mode access

Number of channel-groups in use: 0
Number of aggregators: 0

Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------

RU - L3 port-channel UP State
SU - L2 port-channel UP state
P/bndl - Bundled
S/susp - Suspended

@Rob Ingram If you could provide some inputs here, it will be really helpful. 

[Richard Pidcock]

Sounds pretty strange.  Can you default the interfaces that you are wanting to channel together to see if that makes a difference.

[liviu.gheorghe]

Hello @MriduD ,

on the ISR 1K, etherchannel is not supported on the switch ports. It's only supported on the L3 WAN ports. The only exception is the ISR 1131 series which has enhanced built-in switching hardware and capabilities.

Please see the link for more details: https://www.cisco.com/c/en/us/td/docs/routers/access/isr1100/software/configuration/xe-17/isr1100-sw-config-xe-17/configuring_ethernet_switchports.html#overview-of-ether-channel

[MriduD]

Thank you @liviu.gheorghe and @Richard Pidcock for your replies!

I am pasting a rough topology here for reference. Since the customer wants a minimum of 2 connections between router and switch, do we have any alternative to prevent STP/routing loops?

[MHM Cisco World]

Try 

No switchport 

Then do "?"

Share the option you get here let me check

MHM

[MriduD]

Hi MHM, 

Here is the output:

Host(config-if)#no switchport ?
access Set access mode characteristics of the interface
autostate Include or exclude this port from vlan link up calculation
block Disable forwarding of unknown uni/multi cast addresses
host Set port host
mode Set trunking mode of the interface
nonegotiate Device will not engage in negotiation protocol on this interface
port-security Security related command
priority Set appliance 802.1p priority
protected Configure an interface to be a protected port
trunk Set trunking characteristics of the interface
voice Voice appliance attributes

[MHM Cisco World]

Friend two separate lines 

1 line no switchport 

2 line ?

MHM

[MriduD]

Sorry, mate. Here you go

#sh vlan brief

VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi0/1/0, Gi0/1/1
2 VLAN0002 active Gi0/1/3
3 VLAN0003 active Gi0/1/2

[MHM Cisco World]

Let me check this in my lab

Thanks for waiting 

MHM

[Richard Pidcock]

For clarity, I think @MHM Cisco World  was suggesting that you enter the "no switchport" command on the interface, and then execute the ? to see what options you have.

I think I see it below now...sorry.

[Richard Pidcock]

I don't see much option to allow this unless you're using different hardware that allows etherchannel, or has more physical interfaces.  Sorry that's not really any help, but I don't know that you'll find a solution with what you have to work with.