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Community Member

cisco 1841 router LAN port hanging issues on MPLS

Dear All,

I have 3 locations connected with MPLS connectivity … 2 mbps , 2 mbps branches and 4 mbps and HO

HO, I have Cisco 1841 router

Last few days I am facing problem that Cisco 1841 router’s Lan port suddenly stop working and connectivity get disconnected.

In this stage branch offices can reach up to CISCO 1841 WAN port.

( I have changed 2 different router assuming router problem but issues remain same, Hence No hardware problem )

Please help me if anyone seen this problem …thanks

7 REPLIES
Community Member

cisco 1841 router LAN port hanging issues on MPLS

does anyone have solution for the issue ??

Community Member

cisco 1841 router LAN port hanging issues on MPLS

Hi,

I guess the links are on ethernet try using IP SLA command.

Also check the port configuration @ provider end.

Regards,

Ranjit

Community Member

cisco 1841 router LAN port hanging issues on MPLS

Thanks Ranjit, but can you please explain in some detail ...thanks

Community Member

cisco 1841 router LAN port hanging issues on MPLS

I'm also having same problem here. after few days router LAN is hanging. after restarting router works fine for few days. I have enabled logs too. but there is nothing.   if anyone can help much appreciated.

thank you

cisco 1841 router LAN port hanging issues on MPLS

Hi,

Kindly provide the output of "show proc cpu sorted" & "show proc memory sorted" when you see the issue again.

Thanks & Regards,

Vignesh R P

cisco 1841 router LAN port hanging issues on MPLS

Are your monitoring router in any monitoring software did u see cpu usage.  also enabling netflow on router to monitor traffic when this happens.

Jawad

Jawad
Community Member

cisco 1841 router LAN port hanging issues on MPLS

I'm sorry if I'm doing wrong thing by posting my router details and if it is please let me know.

CPU utilization for five seconds: 2%/3%; one minute: 1%; five minutes: 0%

PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process

   3        1172       291       4027  1.80%  1.27%  0.34%   2 Virtual Exec

  25      261068    168736       1547  0.98%  0.44%  0.33%   0 IP Input

   2          24     13793          1  0.00%  0.00%  0.00%   0 Load Meter

   4       48800      8180       5965  0.00%  0.07%  0.06%   0 Check heaps

   5           4        15        266  0.00%  0.00%  0.00%   0 Pool Manager

   6           0         1          0  0.00%  0.00%  0.00%   0 AAA_SERVER_DEADT

   7           8         2       4000  0.00%  0.00%  0.00%   0 Timers

   8           0         2          0  0.00%  0.00%  0.00%   0 Serial Backgroun

   9           0         2          0  0.00%  0.00%  0.00%   0 AAA high-capacit

  10         256      1281        199  0.00%  0.00%  0.00%   0 ARP Input

  11          12         3       4000  0.00%  0.00%  0.00%   0 DDR Timers

  12          12         2       6000  0.00%  0.00%  0.00%   0 Entity MIB API

  13           0         1          0  0.00%  0.00%  0.00%   0 SERIAL A'detect

  14         312     68889          4  0.00%  0.00%  0.00%   0 GraphIt

  15           0         1          0  0.00%  0.00%  0.00%   0 Critical Bkgnd

  16        2012     79726         25  0.00%  0.00%  0.00%   0 Net Background

  17           4        11        363  0.00%  0.00%  0.00%   0 Logger

  18         516     68886          7  0.00%  0.00%  0.00%   0 TTY Background

  19        1152     68892         16  0.00%  0.00%  0.00%   0 Per-Second Jobs

  20         472    181251          2  0.00%  0.00%  0.00%   0 LED Timers

  21           4         2       2000  0.00%  0.00%  0.00%   0 AAA Server

  22           0         1          0  0.00%  0.00%  0.00%   0 AAA ACCT Proc

  23           0         1          0  0.00%  0.00%  0.00%   0 ACCT Periodic Pr

  24           8         2       4000  0.00%  0.00%  0.00%   0 AAA Dictionary R

   1           0         1          0  0.00%  0.00%  0.00%   0 Chunk Manager

  26           0         1          0  0.00%  0.00%  0.00%   0 ICMP event handl

  28           0         2          0  0.00%  0.00%  0.00%   0 PPP Hooks

  29       10100      1156       8737  0.00%  0.00%  0.00%   0 IP Background

  30         128      1153        111  0.00%  0.00%  0.00%   0 IP RIB Update

  31           0         2          0  0.00%  0.00%  0.00%   0 PPP IP Route

  32           0         2          0  0.00%  0.00%  0.00%   0 PPP IPCP

  33          64       438        146  0.00%  0.00%  0.00%   0 TCP Timer

  34          64        19       3368  0.00%  0.00%  0.00%   0 TCP Protocols

  35           0         1          0  0.00%  0.00%  0.00%   0 RARP Input

  36          24         2      12000  0.00%  0.00%  0.00%   0 DHCPD Receive

  37           0         1          0  0.00%  0.00%  0.00%   0 Socket Timers

  38         204        59       3457  0.00%  0.00%  0.00%   0 HTTP CORE

  39         140      1148        121  0.00%  0.00%  0.00%   0 IP Cache Ager

  40           4         2       2000  0.00%  0.00%  0.00%   0 PPP Bind

  41           0         2          0  0.00%  0.00%  0.00%   0 LOCAL AAA

  42           4         2       2000  0.00%  0.00%  0.00%   0 ENABLE AAA

  43           4         2       2000  0.00%  0.00%  0.00%   0 LINE AAA

  44           0         2          0  0.00%  0.00%  0.00%   0 AAA SEND STOP EV

  45        2424      6751        359  0.00%  0.00%  0.00%   0 Net Input

  46          16     13795          1  0.00%  0.00%  0.00%   0 Compute load avg

  47       86044      1171      73479  0.00%  0.08%  0.10%   0 Per-minute Jobs

  48           4       575          6  0.00%  0.00%  0.00%   0 DHCPD Timer

  49        2292     19501        117  0.00%  0.00%  0.00%   0 DHCPD Database

show proc memory sorted

Total: 7786496, Used: 2586432, Free: 5200064

PID TTY  Allocated      Freed    Holding    Getbufs    Retbufs Process

   0   0     194116      22068    1580028          0          0 *Init*

   0   0    3656700     989960      77452     172528          0 *Dead*

  25   0     109360       9504      39360          0          0 IP Input

  36   0      50608        188      33152          0          0 DHCPD Receive

   3   2      16008       4020      29068       4536          0 Virtual Exec

  38   0      37064      32984      25444          0          0 HTTP CORE

  34   0     206288          0      22864          0          0 TCP Protocols

  16   0      52068          0      21628          0          0 Net Background

  30   0        152          0      21516          0          0 IP RIB Update

  29   0         76          0      21460          0          0 IP Background

  32   0        188        188      21364          0          0 PPP IPCP

  28   0        188        188      21364          0          0 PPP Hooks

  31   0        188        188      21364          0          0 PPP IP Route

  33   0          0      16632      21364          0          0 TCP Timer

  17   0        188        188      21364          0          0 Logger

  19   0          0          0      21364          0          0 Per-Second Jobs

  12   0       2168        520      18916          0          0 Entity MIB API

  10   0        200      58200      17468          0          0 ARP Input

  49   0        188          0      17456          0          0 DHCPD Database

  15   0          0          0      17268          0          0 Critical Bkgnd

  18   0        188        188      17268          0          0 TTY Background

  14   0        188        188      17268          0          0 GraphIt

  20   0        188        188      17268          0          0 LED Timers

  21   0        188        188      17268          0          0 AAA Server

  22   0          0          0      17268          0          0 AAA ACCT Proc

  13   0          0          0      17268          0          0 SERIAL A'detect

  24   0        188        188      17268          0          0 AAA Dictionary R

  11   0        188        188      17268          0          0 DDR Timers

  26   0          0          0      17268          0          0 ICMP event handl

   9   0        188        188      17268          0          0 AAA high-capacit

   8   0        188        188      17268          0          0 Serial Backgroun

   7   0        188        188      17268          0          0 Timers

   6   0          0          0      17268          0          0 AAA_SERVER_DEADT

   5   0          0       2268      17268          0       2412 Pool Manager

   4   0          0          0      17268          0          0 Check heaps

  35   0          0          0      17268          0          0 RARP Input

  42   0        188        188      17268          0          0 ENABLE AAA

   1   0          0          0      17268          0          0 Chunk Manager

  37   0          0          0      17268          0          0 Socket Timers

  43   0        188        188      17268          0          0 LINE AAA

  39   0          0          0      17268          0          0 IP Cache Ager

  40   0        188        188      17268          0          0 PPP Bind

  41   0        188        188      17268          0          0 LOCAL AAA

  44   0        188        188      17268          0          0 AAA SEND STOP EV

  46   0        188        188      17268          0          0 Compute load avg

  47   0          0          0      17268          0          0 Per-minute Jobs

  45   0          0          0      17268          0          0 Net Input

  23   0          0          0      17268          0          0 ACCT Periodic Pr

  48   0          0          0      17268          0          0 DHCPD Timer

   2   0        188        188      13172          0          0 Load Meter

   0   0        224     210204        224          0          0 *Sched*

                                  2585432 Total

sh ver

Cisco Internetwork Operating System Software

IOS (tm) C805 Software (C805-Y6-MW), Version 12.2(15)T12,  RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2004 by cisco Systems, Inc.

Compiled Thu 25-Mar-04 05:37 by cmong

Image text-base: xxxxxxxx, data-base: xxxxxxxxxxxx

ROM: TinyROM version 1.4(1)

fac-int uptime is 19 hours, 14 minutes

System returned to ROM by reload

System image file is "flash:c805-y6-mw.122-15.T12.bin"

Cisco C805  (MPC850) processor (revision 0) with 48468K bytes of virtual memory.

Processor board ID FOC082307K1 (3893625006)

CPU part number 0x2101

Bridging software.

1 Ethernet/IEEE 802.3 interface(s)

1 Serial(sync/async) network interface(s)

8M bytes of physical memory (DRAM)

8K bytes of non-volatile configuration memory

8M bytes of flash on board (4M from flash card)

Configuration register is 0x2102

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