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InterVLAN Routing

February 6th, 2017 Go to comments

Question 1

Question 2

Question 3


To enabe encapsulation on a subinterface we have type the “encapsulation” command under that subinterface, not the main interface. An example of configuring encapsulation on subinterface of Fa0/1 is shown below:

Router(config)#interface f0/0
Router(config-if)#no shutdown

(Note: The main interface f0/0 doesn’t need an IP address but it must be turned on)

Router(config)#interface f0/0.0
Router(config-subif)#encapsulation dot1q 10
Router(config-subif)#ip address
Router(config-subif)#interface f0/0.1
Router(config-subif)#encapsulation dot1q 20
Router(config-subif)#ip address

Note: In the “encapsulation dot1q 10”, number 10 is the VLAN applied to that subinterface. Or you can understand that the subinterface belongs to that VLAN.

Question 4


The causes of slow interVLAN are usually duplex mismatch or collision domain issues, user misconfiguration. For more information please read: http://www.cisco.com/c/en/us/support/docs/lan-switching/virtual-lans-vlan-trunking-protocol-vlans-vtp/23637-slow-int-vlan-connect.html#troubleshoot_slow_interv

Question 5

Question 6

Comments (7) Comments
  1. Ihab
    February 15th, 2017

    Is there any problem with question 2??

  2. Star
    February 20th, 2017

    @Ihab I don’t see any problem with Q2. Its perfectly fine..

  3. real name
    February 25th, 2017

    cant see any questions just explanations…

  4. John
    March 5th, 2017

    For Q2, why shouldn’t the answer be C ?
    C. intra-VLAN routing using router on a stick

  5. Anonymous
    March 10th, 2017

    John it’s not intra-VLAN, it’s Inter-Vlan technology so A is correct.

  6. Anonymous
    March 10th, 2017

    Sorry I meant IHab not John, like it matters haha

  7. IN ASS
    March 24th, 2017

    questions are inside in your ass