2960x switchport issues

[peter.warwick]

Hi All,

We have a Cisco 2960x switch that has been in production with no issue for around a year and a half.  Connected to the ports are a bunch of 8811 IP Phones that we use on CUCM and staff Laptops.

Yesterday my colleagues' phone was working fine, this morning when we arrived in the office it was powered off. 

We plugged his phone into a different switch port and that works fine.

We checked the cables from the switch to patch panel and patch panel to the desk, both of which are OK.

We can connect his laptop directly to the switch via the desk > patch panel > switch with no issue.  He receives a DHCP address and can connect to whatever he needs to.

There is no difference in configuration to any other switchport on the switch.

gi1/0/43 is the interface in question.

interface GigabitEthernet1/0/42
switchport mode access
switchport voice vlan 20
no cdp enable
spanning-tree portfast
!
interface GigabitEthernet1/0/43
switchport mode access
switchport voice vlan 20
spanning-tree portfast
!
interface GigabitEthernet1/0/44
switchport mode access
switchport voice vlan 20
spanning-tree portfast

we have done 'shut' 'no shut', checked power inline.

Can anyone help?

[Meheretab Mengistu]

Hi Peter,

Have you tried "default interface GigabitEthernet1/0/43"and reconfigure?

If not, please try defaulting the interface, and check "sh run int gi1/0/43" to make sure that it is actually defaulted; then reconfigure it.

HTH,
Meheretab

[peter.warwick]

Hi Meheretab,

I have tried that and no success.

Any further ideas?

Cheers,
Pete

[Meheretab Mengistu]

Pete,

I had similar issue with 2960x recently where we plugged in AP. Since that port is NOT supplying power, there is nothing much you can do. I would use "POE injector" if I run out of POE ports, or swap the switch.

I have seen similar issues in older posts:- https://supportforums.cisco.com/t5/lan-switching-and-routing/2960x-power-inline-faulty-on-interface/m-p/2963303


HTH,
Meheretab

[Mark Malone · Accepted solution]

Yes agree I have switches and blades with dead POE ports they go now and again , you can either RMA the switch or just use an injector as already stated

[Leo Laohoo]

Pete, 

Post the complete output to the command "sh interface Gi1/0/43 controll".

[peter.warwick]

Hi Leo, 

The phone is connected but still saying not connected.

SW1#sh int gi1/0/43 controller
GigabitEthernet1/0/43 is down, line protocol is down (notconnect)
Hardware is Gigabit Ethernet, address is 00f8.2cb6.feab (bia 00f8.2cb6.feab)
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Auto-duplex, Auto-speed, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 1d04h, output 15:54:27, output hang never
Last clearing of "show interface" counters 16w3d
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
160773845 packets input, 105150781250 bytes, 0 no buffer
Received 5600342 broadcasts (2289811 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 2289811 multicast, 0 pause input
0 input packets with dribble condition detected
188934017 packets output, 145993434228 bytes, 0 underruns
0 output errors, 0 collisions, 7 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out

Transmit GigabitEthernet1/0/43 Receive
745281952 Bytes 1938917392 Bytes
184563571 Unicast frames 208417763 Unicast frames
25697548 Multicast frames 2442945 Multicast frames
13998903 Broadcast frames 3392349 Broadcast frames
0 Too old frames 826179602 Unicast bytes
0 Deferred frames 768709342 Multicast bytes
0 MTU exceeded frames 320669252 Broadcast bytes
0 1 collision frames 0 Alignment errors
0 2 collision frames 0 FCS errors
0 3 collision frames 0 Oversize frames
0 4 collision frames 0 Undersize frames
0 5 collision frames 0 Collision fragments
0 6 collision frames
0 7 collision frames 58695560 Minimum size frames
0 8 collision frames 34509013 65 to 127 byte frames
0 9 collision frames 12484364 128 to 255 byte frames
0 10 collision frames 4115062 256 to 511 byte frames
0 11 collision frames 4152428 512 to 1023 byte frames
0 12 collision frames 100295221 1024 to 1518 byte frames
0 13 collision frames 0 Overrun frames
0 14 collision frames 0 Pause frames
0 15 collision frames
0 Excessive collisions 0 Symbol error frames
0 Late collisions 0 Invalid frames, too large
0 VLAN discard frames 1409 Valid frames, too large
0 Excess defer frames 0 Invalid frames, too small
52326200 64 byte frames 0 Valid frames, too small
31682560 127 byte frames
22314683 255 byte frames 0 Too old frames
4876335 511 byte frames 0 Valid oversize frames
12604141 1023 byte frames 0 System FCS error frames
100454115 1518 byte frames 0 RxPortFifoFull drop frame
1988 Too large frames
0 Good (1 coll) frames
0 Good (>1 coll) frames

Cheers,

Pete

[akumarka]

hi can you check power inline status when ,iphone connected to switch.

show  power inline

[peter.warwick]

Hey Akumarka,

IP Phone is connected.

sh power inline

Gi1/0/38 auto off 0.0 n/a n/a 30.0
Gi1/0/39 auto on 6.3 IP Phone 8811 2 30.0
Gi1/0/40 auto off 0.0 n/a n/a 30.0
Gi1/0/41 auto off 0.0 n/a n/a 30.0
Gi1/0/42 auto off 0.0 n/a n/a 30.0
Gi1/0/43 auto off 0.0 n/a n/a 30.0
Gi1/0/44 auto off 0.0 n/a n/a 30.0
Gi1/0/45 auto off 0.0 n/a n/a 30.0
Gi1/0/46 auto off 0.0 n/a n/a 30.0
Gi1/0/47 auto off 0.0 n/a n/a 30.0
Gi1/0/48 auto off 0.0 n/a n/a 30.0

Cheers,

Pete