6500 performance issues.

Unanswered Question
May 13th, 2010

Hi,

We are having two 6500 series switches in same floor. In First switch 6748 line cards is installed with DFC-3 card.

In our Editing  workstations are connected to this line card for higher cache as well performance.

In second switch I have installed 6748 line card with DFC-3 card today morning successfully. Unfortunately editing workstations

are not working on new switch even though it is same hardware / switching capability.

When I am troubleshooting I found below difference between two switches kindly refer below.

4th Floor 1st Switch – Editing workstation is working fine.

DXB-FLR4-SUP#show platform hardware capacity fabric

Switch Fabric Resources

  Bus utilization: current: 0%, peak was 10% at 14:26:30 UAE Sun Apr 11 2010

  Fabric utilization:     Ingress                    Egress

    Module  Chanl  Speed  rate  peak                 rate  peak              

    7       0         8G    0%    3% @16:05 18Oct09    0%    3% @18:41 22Feb09

    8       0        20G    0%    5% @21:05 31Jul09    0%    6% @15:26 13Jul09

    9       0        20G    0%   14% @18:14 14Apr09    0%    5% @16:24 04Mar09

    9       1        20G    0%   25% @21:17 16Dec09    0%   13% @19:38 04Nov09

    12      0        20G    0%   14% @19:38 04Nov09    0%   17% @20:46 11Oct09

    12      1        20G    0%    5% @15:18 01Oct09    0%   14% @22:30 16Apr09

    13      0        20G    0%    5% @16:29 16Mar09    0%   15% @22:44 13Mar09

    13      1        20G    0%    6% @12:49 07Mar09    0%   17% @18:21 14Mar09

  Switching mode: Module                                        Switching mode

                  7                                                  truncated

                  8                                               flow through

                  9                                                    compact

                  12                                                   compact

                  13                                                   compact

4th Floor 2nd Switch – Editing workstation is not working

DXB-FLR4-SUP2#sh platform hardware capacity fabric

Switch Fabric Resources

  Bus utilization: current: 0%, peak was 8% at 11:55:34 UAE Wed Nov 18 2009

  Fabric utilization:     Ingress                    Egress

    Module  Chanl  Speed  rate  peak                 rate  peak              

    5       0        20G    0%   10% @16:15 05Dec09    0%    3% @12:07 21Nov09

    5       1        20G    0%    3% @13:06 03May10    0%    6% @20:55 09May10

    6       0        20G    0%    8% @20:46 09May10    0%    3% @13:06 03May10

    6       1        20G    0%    0%                   0%    0%              

    8       0        20G    0%    0%                   0%    0%              

    8       1        20G    0%    0%                   0%    0%              

    9       0        20G    0%    0%                   0%    0%              

    9       1        20G    0%    0%                   0%    0%              

  Switching mode: Module                                        Switching mode

                  5                                                        bus

                  6                                                       dcef

                  8                                                       dcef

                  9                                                       dcef

Please let me know can we change switching mode from bus to truncated or flow through on 2nd switch.

Thanks in advance and appreciate the support as ever.

Best Regards,

M Nagarajan

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stonnet72 Thu, 05/13/2010 - 21:33

Please do a sho ver to see if the IOS versions are a match on both switches. Please post this information.

thank you

jorge.calvo Fri, 05/14/2010 - 03:56

Hello,

If you want to allow the modules to run in truncated mode you should use the command:

fabric switching-mode allow truncated

The flow through mode is only supported by CEF256 modules when there is no switch fabric present. If you have CEF720 modules, you may use truncated mode.

Hope this helps.

MANIVANNAN NAGARAJAN Sat, 05/15/2010 - 22:00

Hi,

Thanks for your response.What will be impact when i will switchover truncated and what

is Cisco's recommendation. If i switch-over to trucated do i require reboot. can any one help on this.

francisco_1 Fri, 05/14/2010 - 04:17

The would make sense. Looks like the first switch you have a Cat  6513 with sup 720 engine with dual full fabric-enabled cards in slots  9 - 13 for dual fabric connected cards for eample WS-X68xx and WS-67xx hence why you are using compact mode used for those cards. The compact mode is used when no nonfaric-enabled modules are installed.

what is the sup on the second switch?

post "show module" on both switch..

MANIVANNAN NAGARAJAN Sun, 05/16/2010 - 07:14

Hi,

Could you please find module details below.

------------------ show module ------------------ In 6513 where everything is working fine


Mod Ports Card Type                              Model              Serial No.
--- ----- -------------------------------------- ------------------ -----------
  1   48  48-port 10/100/1000 RJ45 EtherModule   WS-X6148A-GE-45AF  SAL1125S35R
  2   48  48-port 10/100/1000 RJ45 EtherModule   WS-X6148A-GE-45AF  SAL1125RXAV
  3   48  48-port 10/100/1000 RJ45 EtherModule   WS-X6148A-GE-45AF  SAL1125S1PD
  4   48  48-port 10/100/1000 RJ45 EtherModule   WS-X6148A-GE-45AF  SAL1125S359
  5   48  48-port 10/100/1000 RJ45 EtherModule   WS-X6148A-GE-45AF  SAL1125RXAS
  6   48  48-port 10/100/1000 RJ45 EtherModule   WS-X6148A-GE-45AF  SAL1125RXBE
  7    2  Supervisor Engine 720 (Hot)            WS-SUP720-3B       SAL1125RT9D
  8    2  Supervisor Engine 720 (Active)         WS-SUP720-3B       SAL1125RT9V
  9    4  CEF720 4 port 10-Gigabit Ethernet      WS-X6704-10GE      SAL1124RBTF
10   48  48-port 10/100/1000 RJ45 EtherModule   WS-X6148A-GE-45AF  SAL1201BT28
11   48  48-port 10/100/1000 RJ45 EtherModule   WS-X6148A-GE-45AF  SAL1201C2VM
12   48  CEF720 48 port 10/100/1000mb Ethernet  WS-X6748-GE-TX     SAL1203D8FU
13   48  CEF720 48 port 10/100/1000mb Ethernet  WS-X6748-GE-TX     SAL1204E9L7

------------------ show module ------------------ 6509E where editing workstation is not working


Mod Ports Card Type                              Model              Serial No.
--- ----- -------------------------------------- ------------------ -----------
  1   48  48-port 10/100/1000 RJ45 EtherModule   WS-X6148A-GE-45AF  SAL1204DWA4
  2   48  48-port 10/100/1000 RJ45 EtherModule   WS-X6148A-GE-45AF  SAL1204DUZF
  3   48  48-port 10/100/1000 RJ45 EtherModule   WS-X6148A-GE-45AF  SAL1204DW93
  4   48  48-port 10/100/1000 RJ45 EtherModule   WS-X6148A-GE-45AF  SAL1204DW91
  5    5  Supervisor Engine 720 10GE (Active)    VS-S720-10G        SAL1201BS3J
  6    5  Supervisor Engine 720 10GE (Hot)       VS-S720-10G        SAL1201BS34
  7   48  48-port 10/100/1000 RJ45 EtherModule   WS-X6148A-GE-45AF  SAL1203DFYR
  8   48  CEF720 48 port 10/100/1000mb Ethernet  WS-X6748-GE-TX     SAL1325SDU6
  9   48  CEF720 48 port 10/100/1000mb Ethernet  WS-X6748-GE-TX     SAL1324S80D

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