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Cisco IP Phone and lost packets

Posted on 2013-11-04
Medium Priority
Last Modified: 2013-11-21
I have an issue that I can't quite wrap my head around.  I have been getting complaints about voice quality issues the past few weeks.  If I http to a users phone who is complaining, and look at the Rcvr Lost Packets its at like 50.  This phone is plugged into a Cisco 6513 switch.  This switch has 8 switch blades and I get Rcvr packet loss on all blades I plug the IP Phones into.  I wouldn't think all 8 blades are bad.  For test purposes, I grabbed a cisco 3560G and plugged two IP phones in, and the Rcvr Lost Packets has been at 0 for a couple hours now.  The switchport on the 6513 that I'm seeing dropped packets on looks like the following:

interface GigabitEthernet1/14
 no ip address
 switchport mode access
 spanning-tree portfast

The 3560G that I'm testing with basically has no configuration other than an IP and Gateway:  Ports have not configuration, just default.

Any ideas?  I have no clue what is causing this.
Question by:denver218
  • 3
LVL 20

Accepted Solution

José Méndez earned 1000 total points
ID: 39622287
Have you tried upgrading the firmware on those phones?

Author Comment

ID: 39622302
No I havn't tried that, but its about 4 different models of the Cisco IP phone.  I've moved 8 users over to the 3560G and they are all at 0% packet loss.  All other phones on the cisco 6513 show packet loss.
LVL 47

Assisted Solution

by:Craig Beck
Craig Beck earned 1000 total points
ID: 39622308
What does show int gi1/14 say?

What line cards are you using?

What version of IOS are you running on the 6500?

Author Comment

ID: 39622330
Here's the "show int" for a port I have an IP phone in now that is showing packet loss:

CR-6513#show int gi1/34
GigabitEthernet1/34 is up, line protocol is up (connected)
  Hardware is C6k 1000Mb 802.3, address is 0013.1965.fe91 (bia 0013.1965.fe91)
  MTU 1500 bytes, BW 100000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Full-duplex, 100Mb/s
  input flow-control is off, output flow-control is off
  Clock mode is auto
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:13, output 00:00:53, output hang never
  Last clearing of "show interface" counters 04:54:59
  Input queue: 0/2000/0/0 (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 10000 bits/sec, 8 packets/sec
     41739 packets input, 8958181 bytes, 0 no buffer
     Received 608 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
     215163 packets output, 40441059 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 output buffer failures, 0 output buffers swapped out

CR-6513#show inventory
NAME: "WS-C6513", DESCR: "Cisco Systems Catalyst 6500 13-slot Chassis System"
PID: WS-C6513          , VID:    , SN: TSC07330258

PID: WS-C6K-VTT        , VID:    , SN: SMT0727A239

PID: WS-C6K-VTT        , VID:    , SN: SMT0728A494

PID: WS-C6K-VTT        , VID:    , SN: SMT0727A024

NAME: "WS-C6513-CL", DESCR: "C6k Clock 1"
PID: WS-C6513-CL       , VID:    , SN: SMT0728A803

NAME: "WS-C6513-CL", DESCR: "C6k Clock 2"
PID: WS-C6513-CL       , VID:    , SN: SMT0728A818

NAME: "1", DESCR: "WS-X6148-GE-TX 48 port 10/100/1000mb EtherModule Rev. 6.1"
PID: WS-X6148-GE-TX    , VID:    , SN: SAL09018D9X

NAME: "2", DESCR: "WS-X6148-GE-TX 48 port 10/100/1000mb EtherModule Rev. 6.1"
PID: WS-X6148-GE-TX    , VID:    , SN: SAL09018D99

NAME: "3", DESCR: "WS-X6148-GE-TX 48 port 10/100/1000mb EtherModule Rev. 6.1"
PID: WS-X6148-GE-TX    , VID:    , SN: SAL08527X31

NAME: "4", DESCR: "WS-X6148-GE-TX 48 port 10/100/1000mb EtherModule Rev. 6.1"
PID: WS-X6148-GE-TX    , VID:    , SN: SAD084505PS

NAME: "5", DESCR: "WS-X6148-GE-TX 48 port 10/100/1000mb EtherModule Rev. 6.1"
PID: WS-X6148-GE-TX    , VID:    , SN: SAL09030LGU

NAME: "6", DESCR: "WS-X6148V-GE-TX 48 port 10/100/1000mb EtherModule Rev. 1.1"
PID: WS-X6148V-GE-TX   , VID:    , SN: SAL09179X3L

NAME: "8", DESCR: "WS-SUP720-BASE 2 ports Supervisor Engine 720 Rev. 3.1"
PID: WS-SUP720-BASE    , VID:    , SN: SAD081502LV

NAME: "sub-module of 8", DESCR: "WS-SUP720 MSFC3 Daughterboard Rev. 2.2"
PID: WS-SUP720         , VID:    , SN: SAD081409TH

NAME: "Gi8/1", DESCR: "1000BaseSX"
PID: GLC-SX-MM         , VID:    , SN: H11S0198

NAME: "sub-module of 8", DESCR: "WS-F6K-PFC3A Policy Feature Card 3 Rev. 2.2"
PID: WS-F6K-PFC3A      , VID:    , SN: SAD081500HP

NAME: "9", DESCR: "WS-X6148-GE-TX 48 port 10/100/1000mb EtherModule Rev. 6.1"
PID: WS-X6148-GE-TX    , VID:    , SN: SAD082605RR

NAME: "10", DESCR: "WS-X6148-GE-TX 48 port 10/100/1000mb EtherModule Rev. 6.1"
PID: WS-X6148-GE-TX    , VID:    , SN: SAD084505R8

NAME: "PS 1 WS-CAC-3000W", DESCR: "AC power supply, 3000 watt 1"
PID: WS-CAC-3000W      , VID: V01, SN: AZS10150A9E

NAME: "PS 2 WS-CAC-3000W", DESCR: "AC power supply, 3000 watt 2"
PID: WS-CAC-3000W      , VID: V01, SN: AZS10140E6L

CR-6513#show version
Cisco Internetwork Operating System Software
IOS (tm) s72033_rp Software (s72033_rp-PK9SV-M), Version 12.2(17b)SXA,  RELEASE
TAC Support: http://www.cisco.com/tac
Copyright (c) 1986-2003 by cisco Systems, Inc.
Compiled Tue 30-Dec-03 22:52 by ccai
Image text-base: 0x40008FBC, data-base: 0x41EE0000

ROM: System Bootstrap, Version 12.2(14r)S9, RELEASE SOFTWARE (fc1)
BOOTLDR: s72033_rp Software (s72033_rp-PK9SV-M), Version 12.2(17b)SXA,  RELEASE

CR-6513 uptime is 7 weeks, 6 days, 8 hours, 34 minutes
Time since CR-6513 switched to active is 7 weeks, 6 days, 8 hours, 33 minutes
System returned to ROM by power-on (SP by power-on)
System image file is "sup-bootflash:s72033-pk9sv-mz.122-17b.SXA.bin"

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States and local country laws governing import, export, transfer and
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Importers, exporters, distributors and users are responsible for
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cisco WS-C6513 (R7000) processor (revision 1.0) with 458752K/65536K bytes of mem
Processor board ID TSC07330258
SR71000 CPU at 600Mhz, Implementation 0x504, Rev 1.2, 512KB L2 Cache
Last reset from power-on
X.25 software, Version 3.0.0.
Bridging software.
1 Virtual Ethernet/IEEE 802.3  interface(s)
386 Gigabit Ethernet/IEEE 802.3 interface(s)
1917K bytes of non-volatile configuration memory.
8192K bytes of packet buffer memory.

65536K bytes of Flash internal SIMM (Sector size 512K).
Configuration register is 0x2102

Author Closing Comment

ID: 39667178
I ended up replacing the switch

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