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Beginner

4507r, Why the supervisor engine doesn’t shift automatically to the good one

Hi,

We have one core switch "WS-C4507R+E" in our data centre.

It is having 2 supervisor engine "WS-X45-SUP6L-E".

Today suddenly all remote sites were not reachable.

So, i checked for routing, i checked "show ip route"

I tried every thing, after that i tried "redundancy force-switchover"

So, the active sup restarted and standby became active.

Every thing is working fine now.

So, therefore it seems there is a problem with supervisor engine.

My question is

why the supervisor engine doesn’t shift automatically to the good one?

Everyone's tags (1)
8 REPLIES 8
Participant

4507r, Why the supervisor engine doesn’t shift automatically t

What does your redundancy configuration look like on the switch?

Beginner

4507r, Why the supervisor engine doesn’t shift automatically t

Dear Robert,

Redundancy config in show run is

redundancy

mode sso

!

The output of show redundancy

Switch#sh redundancy

Redundant System Information :

------------------------------

       Available system uptime = 7 weeks, 2 days, 11 hours, 48 minutes

Switchovers system experienced = 1

              Standby failures = 0

        Last switchover reason = user forced

                 Hardware Mode = Duplex

    Configured Redundancy Mode = Stateful Switchover

     Operating Redundancy Mode = Stateful Switchover

              Maintenance Mode = Disabled

                Communications = Up

Current Processor Information :

-------------------------------

               Active Location = slot 4

        Current Software state = ACTIVE

       Uptime in current state = 7 weeks, 2 days, 11 hours, 47 minutes

                 Image Version = Cisco IOS Software, Catalyst 4500 L3 Switch Sof

tware (cat4500e-IPBASE-M), Version 15.1(2)SG, RELEASE SOFTWARE (fc3)

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

Copyright (c) 1986-2012 by Cisco Systems, Inc.

Compiled Wed 05-Dec-12 05:55 by prod_rel_team

                          BOOT = bootflash:cat4500e-ipbase-mz.151-2.SG.bin,12;

        Configuration register = 0x2102

Peer Processor Information :

----------------------------

              Standby Location = slot 3

        Current Software state = STANDBY HOT

       Uptime in current state = 3 days, 16 minutes

                 Image Version = Cisco IOS Software, Catalyst 4500 L3 Switch Sof

tware (cat4500e-IPBASE-M), Version 15.1(2)SG, RELEASE SOFTWARE (fc3)

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

Copyright (c) 1986-2012 by Cisco Systems, Inc.

Compiled Wed 05-Dec-12 05:55 by prod_rel

                          BOOT = bootflash:cat4500e-ipbase-mz.151-2.SG.bin,12;

        Configuration register = 0x2102

Output of show version

Switch#sh version

Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500e-IPBASE-M), Versio

n 15.1(2)SG, RELEASE SOFTWARE (fc3)

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

Copyright (c) 1986-2012 by Cisco Systems, Inc.

Compiled Wed 05-Dec-12 05:55 by prod_rel_team

ROM: 12.2(44r)SG10

Switch uptime is 7 weeks, 2 days, 12 hours, 4 minutes

Uptime for this control processor is 7 weeks, 2 days, 12 hours, 5 minutes

System returned to ROM by SSO Switchover

System image file is "bootflash:cat4500e-ipbase-mz.151-2.SG.bin"

Darkside Revision 4, Nexu Revision 14, Fortooine Revision 1.40

Last reload reason: power-on

cisco WS-C4507R+E (MPC8548) processor (revision 13) with 524288K bytes of memory

.

Processor board ID FXS1706X09M

MPC8548 CPU at 1GHz, Supervisor 6L-E

Last reset from PowerUp

19 Virtual Ethernet interfaces

80 Gigabit Ethernet interfaces

10 Ten Gigabit Ethernet interfaces

511K bytes of non-volatile configuration memory.

Configuration register is 0x2102

I am not able to get show tech-support.

It gives me details below when i type command show tech-support

Switch#sh tech-support

------------------ Mempool statistics ------------------

                Head    Total(b)     Used(b)     Free(b)   Lowest(b)  Largest(b)

Processor   15D52B6C   439014544   234328256   204686288   198933404   195259584

-------------- Top 100 allocator pc summary -----------

Allocator PC Summary for: Processor

Displayed first 2048 Allocator PCs only

    PC          Total   Count  Name

0x122418D8   31360888     202  RF Slave Main Thread

0x1399DBAC   19025928      18  TSM Block

0x122FE824   18350444       7  Init

0x1036AFBC   17710192   15111  *Packet Header*

0x121FE328   10280156     299  Process Stack

0x1245F170    6181040       2  Init

0x1223D848    2295984       4  GaliosObflLogger_helper

0x1399FFBC    2130772       7  Init

0x12243F80    2097220       1  *Init*

0x1036B020    1849120     653  *Packet Data*

0x1250C39C    1835172       1  Init

0x1292A3F8    1734456       6  Routekernel Process

0x11F384D4    1662536      26  XOS_MEM_UTILS

0x1122D6FC    1573920      24  IPC Message Hea

0x125734A4    1359732       1  Init

0x12828888    1327156       1  Init

0x121F4DBC    1171648   16384  Init

0x137406B8    1163264    4096  Init

0x12269410    1115280       1  Init

0x137E6CA4    1048712       1  Init

0x125F3318    1048628       1  Init

0x12645570    1048628       1  Init

0x121F4D50     983288       2  Cat4k Mgmt HiPri

0x107ED8A8     903020       2  session

0x125E0FF0     786484       1  Routekernel Process

0x1122D888     774328    3410  IPC Name String

0x139C8BF4     764876     413  Init

0x10196124     720140       2   mfib_linecard

0x12598F50     704632       2  Init

0x11E408EC     665972      55  TW Buckets

0x13740678     662076     477  Init

0x10E83FEC     655836      10  AAA AttrL Sub

0x137386FC     594720    3304  Routekernel Process

0x11187058     565508       6  RFSS_server_action

0x10C8B714     560140       2  mfib_ipv6

0x113E8838     560140       2  mfib_ipv4

0x139B6A38     542764      81  Init

0x125473D8     524400       2  Init

0x125E4994     524340       1  Init

0x10EEEFF8     481808      72  Standby service handler process

0x122452A0     462236       9  Init

0x102BE24C     418412    4831  State Machine debug data

0x10377EF4     406348     113  *Hardware IDB*

0x113B15C0     400140       2  mfib_events

0x101D767C     394028    4140  IPC Session

0x1015B020     362400    2476  IDC ENTRY

0x1036CC34     361912      12  pak subblock chunk

0x102BE1E0     335004    4831  State Machine debug meta data

0x139699C4     315052       1  Init

0x1249610C     314348       1  Init

0x10ECE560     276480       3  event_trace_tbs

0x123DB288     262392       1  Init

0x10E489F8     254004     347  AAA General DB

0x124D6B80     246780      15  Init

0x124EBE18     238196       1  Init

0x11E8A824     234132     297  Process

0x139A09E4     232996    1533  RF Slave Main Thread

0x11E27620     232140       2  tunnel

0x1276CB80     229804     787  Init

0x11C98754     221372       1  Spanning Tree Opt Port Block

0x1246F600     219068       1  Init

0x121F48C4     216044       1  Init

0x10BE0800     204000    3000  *Init*

0x1015B1A4     200720    2476  IDC ENTRY DATA

0x1015B074     198648    2476  audit_sid entry

0x1096EA30     197256       6  DSensor 64

0x11CA6508     196740       3  STP Port Contro

0x125D2E34     196660       1  Init

0x111F2E68     192276      21  IPC Port

0x103FC254     187656     347  Auth Manager Context

0x124961D4     182548       1  Init

0x122A1E08     165040       1  Init

0x11F32718     161672      10  Redundancy Event Chunks

0x107ED930     158980       2  platf

0x10377EBC     157748     113  *Software IDB*

0x11683BA8     154400       8  ADJ: adjacency

0x107ED9BC     150620       2  table

0x1265780C     147548       1  Init

0x1373F42C     147028     413  Routekernel Process

0x10AAF498     140140       2  checkpoint

0x10BCBEC4     140140       2  redundancy

0x10CADF90     131500       4  AAA Huge Chunk

0x12496178     131396       1  Init

0x137EA3A0     131208       1  Init

0x12598F38     131184       2  Init

0x1037462C     131116       1  *Init*

0x10E46240     128992     348  AAA Interface Struct

0x137ED120     128136       1  Init

0x11E4BDE4     123404     591  RF Slave Main Thread

0x115E5AF4     115384       8  CEF: fib

0x10AD3D1C     109344      24  EEM ED Identity

0x10319ECC     109196       6  XDR:BufPool

0x104F2934     105400      62  IGMPSN L2MCM

0x120BAB64     102756     304  RF Slave Main Thread

0x10E60678     102488       4  AAA Acct DB chu

0x12458730      98356       1  Init

0x124587E0      98356       1  Init

0x137FA6F4      81972       1  Init

0x121F4870      80044       1  Init

0x12269434      76668       1  Init

So, I am not able to understand it is a hardware problem or problem with the IOS.

We have 1 year smartnet contract for this switch.

Highlighted
Beginner

Re: 4507r, Why the supervisor engine doesn’t shift automatical

Hi,

Not sure if that was the problem was with the Supervisor Engine. You see SSO mode provides stateful redundancy for Layer 2 traffic ONLY. When a SSO failover happens the routing protocols are reset. It may be possible that reset of routing information during the force failover has caused your issue to resolve.

Hope that helps.

Regards,

Talha Ansari.

Cisco Employee

4507r, Why the supervisor engine doesn’t shift automatically t

Mohsin,

The switchover will happen only if they there is a physical failure/reload of the active supervisor. I believe in your case all the control-packets were dropped by the active supervisor and the supervisor failover restored the situation.

I strongly suspect that the you are hitting this bug#CSCuj73571

Hope it helps!!

Thanks

Karthick Murugan

CCIE#39285

Thanks & Regards, Karthick Murugan CCIE#39285
Beginner

4507r, Why the supervisor engine doesn’t shift automatically t

Thanks Karthick,

I will check this.

yesterday there was same problem, so i need to shift the supervisor engine again.

In 5 days this is second time.

So, there may be problem with the IOS.

I will upgrade the IOS now.

Thanks.

Cisco Employee

4507r, Why the supervisor engine doesn’t shift automatically t

I personally resolved many similar issues by upgrading the code. I strongly believe the issue is should be resolved after upgrade(Fixed code)

Thanks & Regards,
Karthick Murugan
CCIE#39285

Thanks & Regards, Karthick Murugan CCIE#39285
Beginner

4507r, Why the supervisor engine doesn’t shift automatically t

this is an evil bug. I have a 4510/sup8E that just suddenly stopped being a layer 3 switch, tac are pointing me to this bug CSCuj73571. My box fails to arp properly on SVI interfaces - which effectively makes it useless for its main functionality! and it doesn't failover RPs to fix itself either.

whats more there is no fixed ios for sup8E! this is the flagship sup for this box, why no ios update since august 2013?

I wouldn't use a sup8E for ANYTHING until this is fixed.

Ian

Beginner

4507r, Why the supervisor engine doesn’t shift automatically t

We are seeing the same problem on our 4510 running Sup 7-E with 03.05.00. We downgraded to 03.04.03 but still see the same issue.

The command 'show platform cpu packet drivers' shows the count stop at 2512 on queue 2. Does not increment after that.

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