EtherChannel on Router with 3650 Switch

[SS-Shine]

PaI am using Packet Tracer to create a Lab.

On NY-R1 I am not able to create the port-channel 1.10 sub-interface.  Does Packet Tracer allow me to create ether-channel sub-interface?

NY-R1(config)#interface port-channel 1.10

^

% Invalid input detected at '^' marker.

Trying to create 4 sub-interface on router for 4 VLANs.

Thanks,

Sunny

[David Ruess]

Hello,

Can you provide the output of the following command:

interface port-channel ?

To see what your options are. I believe you will need to create the sub interfaces and make them a part of the channel group.

Packet tracer may also not support that function.

-David

[Joseph W. Doherty]

Cannot say with 100% certainly, why PT doesn't accept that configuration option, but can say with 100% certainly, PT, generally, doesn't support all the features the real hardware/software would.  So, beyond the most basic configuration options, they are very often not provided.  Also, BTW, whatever features PT does provide may not work as they do on the real platform.

[SS-Shine]

NY-R1#sh int port-channel 1

Port-channel1 is up, line protocol is up (connected)

Hardware is EtherChannel, address is 0006.2a9d.3b2c (bia 0006.2a9d.3b2c)

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Half-duplex, 100Mb/s

input flow-control is off, output flow-control is off

Members in this channel: Gig0/0 Gig0/1

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:08, output 00:00:05, output hang never

Last clearing of "show interface" counters never

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue :0/40 (size/max)

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

956 packets input, 193351 bytes, 0 no buffer

Received 956 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

0 watchdog, 0 multicast, 0 pause input

0 input packets with dribble condition detected

2357 packets output, 263570 bytes, 0 underruns

0 output errors, 0 collisions, 10 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

NY-R1#sh run

Building configuration...

Current configuration : 799 bytes

!

version 15.1

no service timestamps log datetime msec

no service timestamps debug datetime msec

no service password-encryption

!

hostname NY-R1

!

!

!

!

!

!

!

!

no ip cef

no ipv6 cef

!

!

!

!

license udi pid CISCO1941/K9 sn FTX152400OC-

!

!

!

!

!

!

!

!

!

!

!

!

!

spanning-tree mode pvst

!

!

!

!

!

!

interface Port-channel1

no ip address

!

interface GigabitEthernet0/0

no ip address

channel-group 1

duplex auto

speed auto

!

interface GigabitEthernet0/1

no ip address

channel-group 1

duplex auto

speed auto

!

interface Serial0/0/0

ip address 172.16.1.2 255.255.255.0

!

interface Serial0/0/1

no ip address

clock rate 2000000

shutdown

!

interface Vlan1

no ip address

shutdown

!

ip classless

!

ip flow-export version 9

!

!

!

!

!

!

!

line con 0

!

line aux 0

!

line vty 0 4

login

!

!

!

end

NY-R1#

NY-R1#

NY-R1#

NY-R1#

NY-R1#sh ip int bri

Interface IP-Address OK? Method Status Protocol

Port-channel1 unassigned YES unset up up

GigabitEthernet0/0 unassigned YES unset up up

GigabitEthernet0/1 unassigned YES unset up up

Serial0/0/0 172.16.1.2 YES manual up up

Serial0/0/1 unassigned YES unset administratively down down

Vlan1 unassigned YES unset administratively down down

[RedNectar]

---

Hi @SS-Shine ,

Keep in mind that it is probably 10 years since I configured one of these, so I may have forgotten things. But in the config you showed below, I see:

interface Port-channel1
no ip address

If you want to use sub-interfaces, I would have EXPECTED to see:

interface Port-channel1
no switchport
no ip address

On the assumption that the default configuration for a port-channel is switchport, not a routed interface.

HTH

---

And as a bonus - let me give you some tips for posting to the forum (especially about posting console output)

RedNectar's Forum Tips:

• When pasting code/CLI output, expand the top menu by clicking the ellipsis 
  

  This will give you access to the paragraph formatting drop down

• oose Preformatted 
  After clicking Preformatted, click HTML and paste your content between the <pre> </pre> tags.  This will stop multiple spaces being squeezed into a single space.

---

• When you add pictures, add your pictures inline - i.e. PASTE your picture right where you want it.  If it is a screenshot, you'll probably then want to click on the image and make the image large - like this.

This means you pictures are actually SEEN (a) in the email that gets sent to subscribers and (b) anyone who looks at this post in the future. Adding pictures as attachments... puts your submission into the TL;DR category.

[SS-Shine]

Hello Chris,

Thanks for the Tip.  I am configuring this in Packet Tracer 9 and it is on router 2901.  I do not have option to for no switch port.  Also, I need the router port as sub-interface so I can tag my vlans.

When I try interface port-channel 1.100 I receive "invalid input detected at as below

NY-R1(config)#interface port-channel 1.10

^

% Invalid input detected at '^' marker.

Does packet Tracer allow to create port channel sub-interface?

Thanks,

Sunny

[RedNectar]

Hi Sunny ,

Try this:

interface Port-channel1
no switchport
exit
interface Port-channel 1.10

and see if the error still occurs. 

The problem is that Cisco devices need to know if a port is a traditional router port (where you assign IPs to the interface/sub-interface itself) or a "switch" port (where you assign IPs to a VLAN interface, then enable the VLANs on particular "switchports")

By default, on a router, all interfaces are assumed to be router ports. Should you want the port to be used as a "switchport" you need to configure the switchport command on the interface.

By default, on a switch (your case) all interfaces are assumed to be "switchports". Should you want the port to be used as a "router port you need to configure the no switchport command on the interface.

Again I'm digging deep into my memory for this. Spent the past 10 years almost exclusively with ACI.

[SS-Shine]

Hi,

Thanks for the response and tip, but I try on R1 - and did not work

NY-SW1#config t
Enter configuration commands, one per line. End with CNTL/Z.
NY-SW1(config)#int
NY-SW1(config)#interface por
NY-SW1(config)#interface port-channel 1
NY-SW1(config-if)#no swit
NY-SW1(config-if)#no switchport
Command rejected: Not a convertible port.

[Joseph W. Doherty]

I am configuring this in Packet Tracer 9 and it is on router 2901.

Ah, version 9.  Last, time I recently looked (within the last couple of weeks), I recall version 8 was still the recommended version, so version 9 is still, perhaps, considered beta.  If so, possibly providing this feature is intended, but possibly just not working yet.  Or, as both @David Ruess and I have both suggested, missing features isn't uncommon within PT.

As to @RedNectar suggestion looking to insure port is not in switchport mode, that should be a non issue on a router's built-in (L3) ports.  I recall (?) it was applicable if using a router's L3 switch module's ports.  However, I wouldn't suspect PT to (possibly ever) simulate them.

A CML router would likely support the configuration option(s) you're trying to configure.

[Joseph W. Doherty]

Oh, forgot to mention, I believe Cisco now allows for a free 5 node version of CML, plus I recall their on-line version is free too, although it has other usage considerations beyond node count.

[RedNectar]

@Joseph W. Doherty ,

Thanks for doing the legwork to (in)validate my attempt.