[c-nsp] Help with hardware routing table error

[Rodney Dunn]

Can you post a 'sh hard pxf cpu cef mem' output?

How many routes is the box actually getting?

I did some reading on bugs and most (all I can find) are closed
as having reached the hardware limitation of how many routes
the box can hold.

I see you have a PRE1 not a PRE2.

Here is a snippet from a bug that was closed similar to this:

<snip>
The issue is that due to the distribution of
routes in the VRFs we are running out of some mid level CEF nodes in
the PXF memory. I am providing the details of how the PXF memory is
being consumed on your set up.


Firstly look at the following output:

c10k#sh pxf cpu cef mem
FP CEF/MFIB/TFIB XCM Type usage:
Type Name Col Total   Alloc   Size   Start    End      BitMap  Error 
  0  Root 0   4085    1001    1024   72400000 727FFC00 20DE9680 0        
  1  Node 0   65526   65526   64     53800000 53C00000 64AFCE78 0        
  2  Node 1   98294   98294   256    50000000 51800000 70D9FA30 0        
  3  Node 1   393206  8977    64     51800000 53000000 20DE98B8 0        
  4  Leaf 1   1376246 99702   8      70800000 71280000 64AFEEB8 0        
  5  Adj  1   1048566 93703   8      70000000 70800000 70DA2A70 0        
  6  Mac  5   1048566 93215   8      50800000 51000000 64B28EF8 0        


Note that we have run out of Type 1 and Type 2 nodes. 
<snip>


Rodney



On Fri, Sep 29, 2006 at 11:12:04AM -0400, Christian Koch wrote:
> Btw sh ver from my router
> 
> hgw1.lhr3#sh ver
> Cisco Internetwork Operating System Software 
> IOS (tm) 10000 Software (C10K-P6-M), Version 12.0(19)SL1,  RELEASE
> SOFTWARE (fc1)
> TAC Support: http://www.cisco.com/tac
> Copyright (c) 1986-2001 by cisco Systems, Inc.
> Compiled Wed 21-Nov-01 15:05 by leccese
> Image text-base: 0x60008960, data-base: 0x60EC0000
> 
> ROM: System Bootstrap, Version 12.0(9r)SL2, RELEASE SOFTWARE (fc1)
> 
> hgw1.lhr3 uptime is 3 years, 8 weeks, 5 days, 11 hours, 28 minutes
> System returned to ROM by reload at 02:28:50 GMT Thu Jul 31 2003
> System restarted at 02:31:39 GMT Thu Jul 31 2003
> System image file is "disk0:c10k-p6-mz.120-19.SL1.bin"
> 
> cisco C10000 (PRE-RP) processor with 491519K/32768K bytes of memory.
> R7000 CPU at 262Mhz, Implementation 39, Rev 2.1, 256KB L2, 2048KB L3
> Cache
> Backplane version 1.0, 8 slot 
> 
> Last reset from register reset
> Toaster processor tmc0 is running.
> Toaster processor tmc1 is running.
> 1 Ethernet/IEEE 802.3 interface(s)
> 1 FastEthernet/IEEE 802.3 interface(s)
> 3 GigabitEthernet/IEEE 802.3 interface(s)
> 63 Serial network interface(s)
> 4 Channelized sonet port(s)
> 509K bytes of non-volatile configuration memory.
> 
> 46976K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes).
> 32768K bytes of Flash internal SIMM (Sector size 256KB).
> Secondary is up
> Secondary has 524288K bytes of memory.
> 
> Configuration register is 0x2102 
> 
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Christian Koch
> Sent: Friday, September 29, 2006 10:46 AM
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] Help with hardware routing table error
> 
> Hi All,
> 
> Receiving this error  
> 
> Sep 29 15:43:21 GMT: %GENERAL-3-EREVENT: HWCEF: Failed to alloc Mtrie HW
> node -Traceback= 6008BCC8 6008CAFC 6008CFA4 6008E95C 601D6014 601D9034
> 601E1648 601E9BB0 6041C36C 603EF9BC 603F2530 60812CF8 6081381C 6089FC90
> 608138B8 607EA110
> hgw1.lhr3#           
> 
> Cisco's answer...
> 
> 
>  When a Cisco 10720 Internet Router loads a large routing table, the
> following error message may appear:
> %GENERAL-3-EREVENT: HWCEF: Failed to alloc Mtrie HW node
> 
> This means that the Mtrie IP lookup algorithm used in Cisco Express
> Forwarding (CEF) failed to allocate sufficient memory. This error
> happens when a full Internet table that consists of approximately 100K
> or more of sparsely distributed routes is added to the hardware
> forwarding table.
> 
> Workaround: There is no known workaroun 
> 
> Any ideas what I can do, without reloading this router??
> 
> Christian
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