bug in 3560 IOS

[mrityunjay singh]

Hello,

Frnds please help me with the folowing I am using cisco packet tracer 6.0.1
I am trying to create L3 link aggregation on cisco 3560 MLS.

Here some issue that i am facing while doing the same.
When I am selecting multiple port using int range command I am not getting option channel-group.

Switch(config)#int range f0/1 -3
Switch(config-if-range)#?
  arp          Set arp type (arpa, probe, snap) or timeout
  bandwidth    Set bandwidth informational parameter
  cdp          CDP interface subcommands
  delay        Specify interface throughput delay
  description  Interface specific description
  duplex       Configure duplex operation.
  exit         Exit from interface configuration mode
  ip           Interface Internet Protocol config commands
  mdix         Set Media Dependent Interface with Crossover
  no           Negate a command or set its defaults
  power        Power configuration
  shutdown     Shutdown the selected interface
  speed        Configure speed operation.
  standby      HSRP interface configuration commands
  switchport   Set switching mode characteristics
Switch(config-if-range)#

However when I am selecting individual interface then i am getting the option channel-group or channel-protocol

Switch(config)#int f0/1
Switch(config-if)#?
  arp                Set arp type (arpa, probe, snap) or timeout
  bandwidth          Set bandwidth informational parameter
  cdp                CDP interface subcommands
  channel-group      Etherchannel/port bundling configuration
  channel-protocol   Select the channel protocol (LACP, PAgP)
  delay              Specify interface throughput delay
  description        Interface specific description
  duplex             Configure duplex operation.
  exit               Exit from interface configuration mode
  hold-queue         Set hold queue depth
  ip                 Interface Internet Protocol config commands
  mdix               Set Media Dependent Interface with Crossover
  mls                mls interface commands
  no                 Negate a command or set its defaults
  power              Power configuration
  service-policy     Configure QoS Service Policy
  shutdown           Shutdown the selected interface
  speed              Configure speed operation.
  standby            HSRP interface configuration commands
  switchport         Set switching mode characteristics
  tx-ring-limit      Configure PA level transmit ring limit

Also after creating the port channel (ofcourse by running command on individual interfaces)

I am not able to assign ip address on port-channel interface(already all the child link are l3)

Switch(config)#int port-channel 1
Switch(config-if)#?
  arp               Set arp type (arpa, probe, snap) or timeout
  bandwidth         Set bandwidth informational parameter
  cdp               Global CDP configuration subcommands
  delay             Specify interface throughput delay
  description       Interface specific description
  duplex            Configure duplex operation.
  exit              Exit from interface configuration mode
  hold-queue        Set hold queue depth
  no                Negate a command or set its defaults
  service-policy    Configure QoS Service Policy
  shutdown          Shutdown the selected interface
  spanning-tree     Spanning Tree Subsystem
  speed             Configure speed operation.
  standby           HSRP interface configuration commands
  storm-control     storm configuration
  switchport        Set switching mode characteristics
  tx-ring-limit     Configure PA level transmit ring limit
Switch(config-if)#

Please let me know if this is bug in 3560 as I am not able to assign ip on port-channel interface and channel-protocol command not working on int range interface.

Thanks,

[Peter Paluch]

Hi,

Regarding the lack of the "channel-group" command in the "interface range" context, this is a bug - but this is a bug of Packet Tracer, not a bug of 3560 because there is in fact no 3560 at all. Packet Tracer only gives off an impression it has a Catalyst 3560 inside but in reality, there is no 3560 IOS running inside the Packet Tracer. It only approximates its behavior and features.

Regarding the lack of "ip address" command - I am not sure whether Packet Tracer supports it at all. But if it does then you must first convert the physical ports into routed ports using the "no switchport" command, and only then you can bundle them into an EtherChannel and optionally assign an IP address to it. An EtherChannel can only be created as switched (when bundling switchports) or routed (when bundling ports configured as "no switchport") and cannot be converted between these types after it has been created. To change its type, you first need to remove it, configure the physical ports to the intended mode (switched or routed) and then recreate the EtherChannel.

Best regards,
Peter