Re: Switch Stack

Imran Ahmad · ‎07-11-2018

Hello Experts,

I have newly purchased Cisco Stackable Switches. but the issue im facing is that, all interfaces in the stack are showing as (shutdown/off). even i tried to manually turn-on the interfaces using command (no shut), but still all ints are showing down.

any idea, what could be the source of the issue ?

Reza Sharifi · ‎07-11-2018

Hi,

What platform switch you have and what is connected to the ports?

HTH

Imran Ahmad · ‎07-12-2018

I have switch model 2960x48-LPS-L, and i have connected computers into the ports.

Thanks

Leo Laohoo · ‎07-12-2018

Post the complete output to the command "sh ip interface brief" and "sh post".

Imran Ahmad · ‎07-12-2018

SWITCH#show ip interface brief Interface IP-Address OK? Method Status Protocol Vlan1 unassigned YES NVRAM administratively down down Vlan100 10.160.70.4 YES NVRAM up up FastEthernet0 unassigned YES NVRAM administratively down down GigabitEthernet1/0/1 unassigned YES unset down down GigabitEthernet1/0/2 unassigned YES unset down down GigabitEthernet1/0/3 unassigned YES unset down down GigabitEthernet1/0/4 unassigned YES unset down down GigabitEthernet1/0/5 unassigned YES unset down down GigabitEthernet1/0/6 unassigned YES unset down down GigabitEthernet1/0/7 unassigned YES unset down down GigabitEthernet1/0/8 unassigned YES unset down down GigabitEthernet1/0/9 unassigned YES unset down down GigabitEthernet1/0/10 unassigned YES unset down down GigabitEthernet1/0/11 unassigned YES unset down down GigabitEthernet1/0/12 unassigned YES unset down down GigabitEthernet1/0/13 unassigned YES unset down down GigabitEthernet1/0/14 unassigned YES unset down down GigabitEthernet1/0/15 unassigned YES unset down down GigabitEthernet1/0/16 unassigned YES unset down down GigabitEthernet1/0/17 unassigned YES unset down down GigabitEthernet1/0/18 unassigned YES unset down down GigabitEthernet1/0/19 unassigned YES unset down down GigabitEthernet1/0/20 unassigned YES unset down down GigabitEthernet1/0/21 unassigned YES unset down down GigabitEthernet1/0/22 unassigned YES unset down down GigabitEthernet1/0/23 unassigned YES unset down down GigabitEthernet1/0/24 unassigned YES unset down down GigabitEthernet1/0/25 unassigned YES unset down down GigabitEthernet1/0/26 unassigned YES unset down down GigabitEthernet1/0/27 unassigned YES unset down down GigabitEthernet1/0/28 unassigned YES unset down down GigabitEthernet1/0/29 unassigned YES unset down down GigabitEthernet1/0/30 unassigned YES unset down down GigabitEthernet1/0/31 unassigned YES unset down down GigabitEthernet1/0/32 unassigned YES unset down down GigabitEthernet1/0/33 unassigned YES unset down down GigabitEthernet1/0/34 unassigned YES unset down down GigabitEthernet1/0/35 unassigned YES unset down down GigabitEthernet1/0/36 unassigned YES unset down down GigabitEthernet1/0/37 unassigned YES unset down down GigabitEthernet1/0/38 unassigned YES unset down down GigabitEthernet1/0/39 unassigned YES unset down down GigabitEthernet1/0/40 unassigned YES unset down down GigabitEthernet1/0/41 unassigned YES unset down down GigabitEthernet1/0/42 unassigned YES unset down down GigabitEthernet1/0/43 unassigned YES unset down down GigabitEthernet1/0/44 unassigned YES unset down down GigabitEthernet1/0/45 unassigned YES unset down down GigabitEthernet1/0/46 unassigned YES unset down down GigabitEthernet1/0/47 unassigned YES unset down down GigabitEthernet1/0/48 unassigned YES unset up up GigabitEthernet1/0/49 unassigned YES unset down down GigabitEthernet1/0/50 unassigned YES unset down down GigabitEthernet1/0/51 unassigned YES unset down down GigabitEthernet1/0/52 unassigned YES unset down down GigabitEthernet2/0/1 unassigned YES unset up up GigabitEthernet2/0/2 unassigned YES unset down down GigabitEthernet2/0/3 unassigned YES unset down down GigabitEthernet2/0/4 unassigned YES unset down down GigabitEthernet2/0/5 unassigned YES unset down down GigabitEthernet2/0/6 unassigned YES unset down down GigabitEthernet2/0/7 unassigned YES unset down down GigabitEthernet2/0/8 unassigned YES unset down down GigabitEthernet2/0/9 unassigned YES unset down down GigabitEthernet2/0/10 unassigned YES unset down down GigabitEthernet2/0/11 unassigned YES unset down down GigabitEthernet2/0/12 unassigned YES unset down down GigabitEthernet2/0/13 unassigned YES unset down down GigabitEthernet2/0/14 unassigned YES unset down down GigabitEthernet2/0/15 unassigned YES unset down down GigabitEthernet2/0/16 unassigned YES unset down down GigabitEthernet2/0/17 unassigned YES unset down down GigabitEthernet2/0/18 unassigned YES unset down down GigabitEthernet2/0/19 unassigned YES unset down down GigabitEthernet2/0/20 unassigned YES unset down down GigabitEthernet2/0/21 unassigned YES unset down down GigabitEthernet2/0/22 unassigned YES unset down down GigabitEthernet2/0/23 unassigned YES unset down down GigabitEthernet2/0/24 unassigned YES unset down down GigabitEthernet2/0/25 unassigned YES unset down down GigabitEthernet2/0/26 unassigned YES unset down down GigabitEthernet2/0/27 unassigned YES unset down down GigabitEthernet2/0/28 unassigned YES unset down down GigabitEthernet2/0/29 unassigned YES unset down down GigabitEthernet2/0/30 unassigned YES unset down down GigabitEthernet2/0/31 unassigned YES unset down down GigabitEthernet2/0/32 unassigned YES unset down down GigabitEthernet2/0/33 unassigned YES unset down down GigabitEthernet2/0/34 unassigned YES unset down down GigabitEthernet2/0/35 unassigned YES unset down down GigabitEthernet2/0/36 unassigned YES unset down down GigabitEthernet2/0/37 unassigned YES unset down down GigabitEthernet2/0/38 unassigned YES unset down down GigabitEthernet2/0/39 unassigned YES unset down down GigabitEthernet2/0/40 unassigned YES unset down down GigabitEthernet2/0/41 unassigned YES unset down down GigabitEthernet2/0/42 unassigned YES unset down down GigabitEthernet2/0/43 unassigned YES unset down down GigabitEthernet2/0/44 unassigned YES unset down down GigabitEthernet2/0/45 unassigned YES unset down down GigabitEthernet2/0/46 unassigned YES unset down down GigabitEthernet2/0/47 unassigned YES unset down down GigabitEthernet2/0/48 un...

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SWITCH#show post Stored system POST messages: Switch 1 --------- POST: MA BIST : Begin POST: MA BIST : End, Status Passed POST: TCAM BIST : Begin POST: TCAM BIST : End, Status Passed POST: Inline Power Controller Tests : Begin POST: Inline Power Controller Tests : End, Status Passed POST: Thermal, Fan Tests : Begin POST: Thermal, Fan Tests : End, Status Passed POST: PortASIC Stack Port Loopback Tests : Begin POST: PortASIC Stack Port Loopback Tests : End, Status Passed POST: PortASIC Port Loopback Tests : Begin POST: PortASIC Port Loopback Tests : End, Status Passed POST: EMAC Loopback Tests : Begin POST: EMAC Loopback Tests : MAC Loopback Passed POST: EMAC Loopback Tests : PHY Loopback Passed POST: EMAC Loopback Tests : End, Status Passed Switch 2 --------- POST: MA BIST : Begin POST: MA BIST : End, Status Passed POST: TCAM BIST : Begin POST: TCAM BIST : End, Status Passed POST: Inline Power Controller Tests : Begin POST: Inline Power Controller Tests : End, Status Passed POST: Thermal, Fan Tests : Begin POST: Thermal, Fan Tests : End, Status Passed POST: PortASIC Stack Port Loopback Tests : Begin POST: PortASIC Stack Port Loopback Tests : End, Status Passed POST: PortASIC Port Loopback Tests : Begin POST: PortASIC Port Loopback Tests : End, Status Passed POST: EMAC Loopback Tests : Begin POST: EMAC Loopback Tests : MAC Loopback Passed POST: EMAC Loopback Tests : PHY Loopback Passed POST: EMAC Loopback Tests : End, Status Passed FR-

Leo Laohoo · ‎07-12-2018

Output shows none of the ports are in shutdown (or administratively down).

Imran Ahmad · ‎07-12-2018

But they are all in (unassigned YES unset down down) state. Although i have connected some interfaces with computers but still showing int down ...

Any idea please?

Leo Laohoo · ‎07-12-2018

Pick a port that is currently connected and do the following:

1. Command: test cable tdr interface <PORT>;

2. Wait for approximately 5 to 7 seconds;

3. Command: show cable tdr interface <PORT>;

4. Post the complete output to #3.

Imran Ahmad · ‎07-13-2018

Hello Leo,

here is the output of the commands you asked:

show cable-diagnostics tdr interface gigabitEthernet 1/0/1
TDR test last run on: July 13 07:35:40

Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi1/0/1 auto Pair A 0 +/- 10 meters N/A Open
Pair B 0 +/- 10 meters N/A Open
Pair C 0 +/- 10 meters N/A Open
Pair D 0 +/- 10 meters N/A Open

Leo Laohoo · ‎07-13-2018

TDR result shows the switch can detect a path of 10 metres and nothing after that. The fault is at the far end.

Imran Ahmad · ‎07-13-2018

Dear Leo,

Then what solution you propose ?

Leo Laohoo · ‎07-13-2018

@Imran Ahmad wrote:

Dear Leo,

Then what solution you propose ?

The cable test shows someone isn't doing his/her job properly.

A cable is patched to the switch but at the far end NOTHING is connected to the cable.

Just think about it: It is claimed that all ports are patched but the switch doesn't show a single port is active.

Are the details in the patch sheet correct?
Are the patch port terminated properly?
Seriously, is the patch cable connected to the computer? Here's a good hint, look at the computer's ethernet port. Are the LEDs blinking or not. If they're not, then duh!, the port isn't connected properly.

Leo Laohoo · ‎07-12-2018

What model is the switch?

Imran Ahmad · ‎07-12-2018

2960x-LPS-L