11-11-2014 09:14 PM - edited 03-19-2019 08:50 AM
Users are complaining that their PCs are slow when connected to the network through Cisco IP phone. Speed is regular when PC is plugged directly to the network switch. Access switches where IP phones are connected are mostly Cisco WS-C3560-48PS. Most of the phones are 7942G There is no local Call Manager. CCM is reachable over the MPLS. Latency less than 10ms
Any ideas what problem could be?
Access-SW01#sh run int Fas 0/16
interface FastEthernet0/16
switchport access vlan 128
switchport mode access
switchport voice vlan 129
srr-queue bandwidth share 10 10 60 20
priority-queue out
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
spanning-tree portfast
service-policy input AutoQoS-Police-CiscoPhone
Access-SW01#sh int Fas 0/16
FastEthernet0/16 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 0026.cad0.5792 (bia 0026.cad0.5792)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:44, output 00:00:00, output hang never
Last clearing of "show interface" counters 1y7w
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 5417
Queueing strategy: fifo
Output queue: 0/0 (size/max)
5 minute input rate 1000 bits/sec, 1 packets/sec
5 minute output rate 7000 bits/sec, 8 packets/sec
83500725 packets input, 51399423374 bytes, 0 no buffer
Received 1174461 broadcasts (850091 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 850091 multicast, 0 pause input
0 input packets with dribble condition detected
304310331 packets output, 84586626038 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
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
Core_SW01#
interface Vlan128 - data vlan
description Office VLAN
ip address 10.81.128.2 255.255.255.0
ip helper-address 10.81.128.5
ip helper-address 10.80.140.35
!
interface Vlan129 - voice vlan
description IPT VLAN
ip address 10.81.129.2 255.255.255.0
ip helper-address 10.81.128.5
ip helper-address 10.80.140.35
11-12-2014 01:37 AM
Have you checked on the phone side to see what it has negotiated with the PC, a common issue is when the wrong duplex is negotiated between the Phone and the PC.
A customer of ours recently resolved PC-Phone issues using PhoneView from UnifiedFX, the paid for product provides full endpoint management, however the free ITL Scanner also performs phone inventory, the data gathered includes a number of PC/Switch port CDP datapoint that should help to resolve this issue.
The free phone inventory functionality is included in the ITL Scanner:
http://www.unifiedfx.com/itl-scanner/
This works for up to 10,000 phones, if you have more phones you would need to buy a license.
Also,
PhoneView is now Cisco Compatible, the only product in it's category to pass IVT testing.
Kind Regards
Stephen Welsh
CTO
UnifiedFX
11-12-2014 08:39 PM
Are you trying to sell me something?
11-13-2014 02:07 AM
Ironically no, the free software should be all you need.
06-28-2020 11:30 PM
Hi,
Did you resolve th issue?
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