What color is LED?

[Keiko Imachi]

The network-topology looks the following chart.

When port is blocking ports at PVST mode, LED is orange blinking.

what color of LED is at Rapid-pvst mode?

Please look at the attached files.

**********************************

Catalyst2960S Gi1/0/20(Blocking port)

-----------------------------         -------------------------------------
Catalyst3750E( Act) =====Catalyst3750E(Stand)

-----------------------------(GEC)  -------------------------------------
         | Gi1/0/20                           |Gi1/0/20
         |                                        |
         | Gi1/0/1                             | i1/0/20
      -------------------------------------------------------
                         Catalyst2960S
      -------------------------------------------------------
             |                                     |
             |(Vlan20)                         |(Vlan30)
                  PC                                 PC

[Antonio Knox]

Here's what you should reference

3560

http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/hardware/installation/guide/higoverview.html#wpxref39834

3750

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/hardware/installation/guide/HIGOVERV.html#wpxref39834

2960

http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/hardware/installation/guide/higover.html#wp1021241

[andtoth]

Hi,

It is the same regardless of STP mode. However, note that it won't be orange if it's a trunk link because it might be forwarding (not blocking) for other vlans.

Best regards,

Andras

[Keiko Imachi]

Hi,

Thank you for replying.

It set it as follows.

*********************

Trunk pot:

Interface gi1/0/20

Switchport trunk mode

Switchport allowed vlan 10,20,30

Spanning-tree cost 200

***********************

Led of blocking port is green.

Best Regards,

[Antonio Knox]

The LED in this case is green because it is status/protocol up/up.  The STP status is not associated with the green light, as the green light is relation to physical layer functionality (ie. the port is up with matching speed/duplex and is now passing traffic).

[Keiko Imachi]

Thank you for replying.

In this case,led of bolcking port is green,and is it correct?

I worry that I was not wrong in the setting

Best Regards,

Keiko Imachi

[andtoth]

Correct. You can check by looking at the switch CLI via telnet or SSH and use the 'show spanning-tree ' command to verify the port state for each vlan.

Andras

[Antonio Knox]

This is correct.  If a port is up and blocking in a particular vlan, the LED will still show green to indicate an active connection.  No worries, this is running correctly as it should.

[Keiko Imachi]

Hi,

I'm sorry for reply so late.

I could understand.
Thank you for a comprehensible explanation.

Best Regards,

Keiko

[andtoth]

As I mentioned, the LED will only reflect the STP blocking status with an orange light if it's not a trunk port. In your case, since it's a trunk port, the LED will stay green.

[Keiko Imachi]

Hi,

I'm sorry for reply so late.

Thank you for many explanation.

I am glad for your help.

Best Regards,
Keiko

[andtoth]

Please don't forget to mark the post as answered and rate the posts as well.

Andras

[Keiko Imachi]

Hi Andras,

I forgot to post the mark.

Thank you so much.

Arigato

Keiko