Home » Cisco » 200-105 » Which command verifies that IP routing is enabled on interfaces and the local VLANs are up?
While you were troubleshooting a connection issue, a ping from one VLAN to another VLAN on the same switch failed. Which command verifies that IP routing is enabled on interfaces and the local VLANs are up?
A. show ip interface brief
B. show ip nat statistics
C. show ip statistics
D. show ip route
Answer: A
Explanation:
Initiate a ping from an end device in one VLAN to the interface VLAN on another VLAN in order to verify that the switch routes between VLANs. In this example, ping from VLAN 2 (10.1.2.1) to Interface VLAN 3 (10.1.3.1) or Interface VLAN 10 (10.1.10.1). If the ping fails, verify that IP routing is enabled and that the VLAN interfaces status is up with the show ip interface brief command.
You cannot do show ip route on a switch, thus the closest answer is A.
A
No, it is D. Sorry!
The “show ip interface brief” does not show whether ip routing is enable it only shows information about the vlan interfaces.. wtf.. I would be so pissed to have the kind of cisco shitty questions at the exam!!
Ok here is my answer,
if you type “Show running config” and scroll down on the bottom you would/must see “ip routing” to verify if routing is enable as what the question is said. but the command is not available in the choices. So will focus on the vlan side the closest and correct answer is A.
Vlan1 unassigned YES manual up up
Vlan2 unassigned YES manual down down
Vlan3 unassigned YES manual down down
I read thru the answers and researched the question. The most logical answer would be “show ip route” because the question leads you to verify if IP Routing is enabled. But “here comes the But” the question also asks Which command verifies the local VLANs are up?, in this case it would be show ip interface brief. Pretty much is a two part question that misleads your answer.
A lot of speculation here, but I still think the answer is A.
Look at the question again… Which command verifies that IP routing is enabled on interfaces AND the local VLANs are up
“Show IP Route” Would should show routes, and thus that IP Routing is enabled, but it’s not going to show you the VLAN interfaces states.
Further to this, I received this question on an Exam today and I don’t recall “Show IP route” being an an option… So it may have already been removed to avoid this confusion.
I think this should be “D. show ip route”
“show ip int brief” doesn’t verify anything regarding IP routing, however “show ip route” *DOES* show subnets that are routable and over which VLANs they’re connected to.
UPDATE: Looks like from Cisco’s own InterVLAN routing documentation, “A” *would* be right (at least in the case of a test, though I’d argue this one in actual use).
http://www.cisco.com/c/en/us/support/docs/lan-switching/inter-vlan-routing/41860-howto-L3-intervlanrouting.html
I think your right A is the correct “Cisco” answer. Which doesn’t make any sense. I hate Cisco!
I do not think that A is the correct answer. I believe the wording is not the best and what they mean is this:
“If the ping fails, [**FIRST**] verify that IP routing is enabled [**This could be done by checking the run config or typing show ip route**] and [**THEN**] that the VLAN interfaces status is up with the show ip interface brief command.”
Also, not only does show ip route show if the switch has routes (which means ip routing is enabled) but also, if it is “connected” to a VLAN (by having a VLAN correctly configured), you would know that they are up and running because the route would not be showing otherwise.
Show ip int brief will still show configured interfaces and vlans as up, while ip routing is disabled. From this cmd u can’t guess wheather ip routing is enabled or disabled.
I believe the answer could be show ip route