Is this combination of SPAs on a SIP truly not supported?

[jkeeffe]

I've got a 7604 with Sup-720 and a SIP-400 with three 2-Gig SPAs installed.  Upon booting up I get an error message that states bandwidth is exceeded on the line card, and the combination of SPA interfaces is not supported. I had no luck searching for a document that would describe any such bad combinations.

The SIP/SPAs all came up and seem to be working OK, but I'm worried about the error msg. Below is a portion of the log showing the SIP/SPAs coming on-line and the error msg. Below that is a 'show mod'.  Is the installed combination of SPAs truly not compatible with each other?

*Oct 15 13:21:38: %CWAN_RP-6-CARDRELOAD: Module reloaded on slot 2/0
*Oct 15 13:21:38: %OIR-6-INSCARD: Card inserted in slot 2, interfaces administratively shut down
*Oct 15 13:21:43: %DIAG-SP-6-RUN_MINIMUM: Module 2: Running Minimal Diagnostics...
SLOT 2: *Mar  1 00:00:07.839: %SIPSPA-4-MAX_BANDWIDTH_NS: Total SPA bandwidth exceeds line card capacity, installed combination of SPA interfaces is not supported
SLOT 2: *Mar  1 00:00:10.163: %FABRIC_INTF_ASIC-5-FABRICSYNC_DONE: Fabric ASIC 0 Channel 1: Fabric sync done.
*Oct 15 13:21:48: %SNMP-5-MODULETRAP: Module 2 [Up] Trap
*Oct 15 13:21:48: %DIAG-SP-6-DIAG_OK: Module 2: Passed Online Diagnostics
*Oct 15 13:21:49: %OIR-SP-6-INSCARD: Card inserted in slot 2, interfaces are now online
*Oct 15 13:21:51: %DIAG-SP-6-RUN_MINIMUM: Module 2/2: Running Minimal Diagnostics...
*Oct 15 13:21:52: %DIAG-SP-6-DIAG_OK: Module 2/2: Passed Online Diagnostics
*Oct 15 13:21:52: %SPA_OIR-6-ONLINECARD: SPA (SPA-2X1GE-V2) online in subslot 2/2
*Oct 15 13:21:53: %SPA_OIR-6-ONLINECARD: SPA (SPA-2X1GE) online in subslot 2/0
*Oct 15 13:21:52: %DIAG-SP-6-RUN_MINIMUM: Module 2/0: Running Minimal Diagnostics...
*Oct 15 13:21:53: %DIAG-SP-6-DIAG_OK: Module 2/0: Passed Online Diagnostics
*Oct 15 13:21:53: %DIAG-SP-6-RUN_MINIMUM: Module 2/1: Running Minimal Diagnostics...
*Oct 15 13:21:53: %DIAG-SP-6-DIAG_OK: Module 2/1: Passed Online Diagnostics
*Oct 15 13:21:53: %SPA_OIR-6-ONLINECARD: SPA (SPA-2X1GE) online in subslot 2/1

RT7604B-CR#sh mod
Mod Ports Card Type                              Model              Serial No.
--- ----- -------------------------------------- ------------------ -----------
  1    2  Supervisor Engine 720 (Active)         WS-SUP720-3B       SAL1105FD7Y
  2    0  4-subslot SPA Interface Processor-400  7600-SIP-400       JAE14320O81

Mod MAC addresses                       Hw    Fw           Sw           Status
--- ---------------------------------- ------ ------------ ------------ -------
  1  0017.9444.5b78 to 0017.9444.5b7b   5.3   8.4(2)       12.2(33)SRD4 Ok
  2  f866.f2db.2640 to f866.f2db.26bf   2.7   12.2(33)SRD4 12.2(33)SRD4 Ok

Mod  Sub-Module                  Model              Serial       Hw     Status
---- --------------------------- ------------------ ----------- ------- -------
  1  Policy Feature Card 3       WS-F6K-PFC3B       SAL1105FGYD  2.3    Ok
  1  MSFC3 Daughterboard         WS-SUP720          SAL1105FGJ1  2.6    Ok
2/0 2xGE SPA                    SPA-2X1GE          JAE1115C5WH  2.2    Ok
2/1 2xGE SPA                    SPA-2X1GE          JAE1239VVJM  2.2    Ok
2/2 2xGE V2 SPA                 SPA-2X1GE-V2       JAE14190M3R  1.0    Ok

Mod  Online Diag Status
---- -------------------
  1  Pass
  2  Pass
2/0 Pass
2/1 Pass
2/2 Pass
RT7604B-CR#

[Mahesh Gohil · Accepted solution]

Hi,

It is not because combination of SUP and SIP but there is oversizing rules for SIP-400.

The total aggregated bw (combination of SPA in SIP) supported is oc-48 per SIP-400.

If you are below oc-48 you will not get any warning message.but if you are above oc-48 you will get warning message ,

your router will continue working but it can malfunction or performance can be degraded.

In you case you already have crossed 4gb bw in slot-2 hence the warning message.

Please find link below for few information

http://www.cisco.com/en/US/products/hw/routers/ps368/module_installation_and_configuration_guides_chapter09186a0080440317.html

Hope this is useful

Regards

Mahesh

[jkeeffe]

In reading the document relating to the SIP-400, I found these two references:

Scalable Bandwidth with Intelligent Network Services for Next-Generation Applications
The unique value provided by the Cisco 7600 Series is the convergence supported from the physical layer to a highly scalable application layer. The Cisco 7600 Series can scale from 10 Megabit Ethernet to 10 Gigabit Ethernet in the LAN, and DS-0 to OC-48/STM-16 in the WAN.

How do they state 10 Gigabit Ethernet in the LAN if you can only have up to an OC-48 worth of bandwidth on the SIP-400?

Supported SPAs:
Ethernet
• 2-port 1 GE SPA (V1 and V2)
• 5 port 1 GE SPA (V2 only)
• 1-port 10GbE SPA LAN PHY (V2 only)

Again, how can the SIP-400 support  a 5port 1 GE SPA or a 1-port 10Gbe SPA if the SIP-400 is limited to OC-48 speeds?  Just curious.

[Mahesh Gohil]

Hi,

There are two cases

1- when total bw is below oc-48

   all SPA types can be combined

1.       For release 12.2(33)SRB and above, the following SPA combinations are supported on SIP-400:

a.       Any mix of POS, ATM, CEoP and serial SPAs up to an aggregate of OC-48. This implies that 1xOC-48 POS SPAs have to be used alone in a SIP-400, and cannot be combined with other SPAs

b.       The Cisco 7600 SIP-400 supports installation of any combination of OC-3 or OC-12 POS or ATM SPAs up to a combined ingress bandwidth of OC-24 rates, when installed with a single 2-Port Gigabit Ethernet SPA

c.       Two SPA-2X1GE SPAs

2.       With 12.2(33)SRD1 and above , add FE SPA and E3/T3 serial SPA in mix allowed combinations

2- when above oc-48

     The SIP400 is running in oversubcription mode. In this case, only three oversubscribed combination

     are supported : 1 x 5GE ; 2x5GE ; 1 x 10GE.

       By default , when using two 2xGE-V2-SPA, no additionnal SPA can be used, because of the oversubscription beyond 4 GE bandwidth.

Regards

Mahesh