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Using CSM with 6509 (MSFC2) !!!

Hi all.

I used one CSM with 6509 Catalyst (MSFC2) load balancing for four Firewall (two PIX 520 and two Checkpoint-1), total traffic is about 400Mbps but the CPU usage of SW is always (85-95)%.

And when we use CSM with 6509 (MSFC2) load balancing for two PIX 525, total traffic is about 320Mbs, but the CPU usage of SW is still (80-90)%.

I don't know what is reason that make the CPU usage too hight. Anyone know, pls give me some advices or some recommends ?

And is there anyway to see the connection through the CSM ?

Thanks

6 REPLIES
Cisco Employee

Re: Using CSM with 6509 (MSFC2) !!!

to see the connections you can do

'sho mod csm X connections [detail]'

Could you capture a 'show mod csm X vserver name detail'

Do it a couple of times within 30 seconds.

Check number of packets and connections.

This box has a limitation on number of packets that can be switched but also number new of connections that can be created.

So, we know the volume of traffic but what is the number of new connections per seconds ?

what type of traffic is it ?

TCP or UDP ?

Could you also capture a 'sho mod csm X tech util'

and check the IXP engines CPU.

Which one(s) is/are high ?

What is your CSM software version ?

Gilles.

New Member

Re: Using CSM with 6509 (MSFC2) !!!

Thanks Gilles

The CSM software version is 3.2(1).

Compare with the tech. specification of CSM, my traffic is too small (the connection is small too, about 98.000 (max)).

The traffic is Internet traffic (both TCp and UDP).

Resource Utilization:

Memory

Availible Memory 68% 170M

Allocated Memory 24% 61M

OS Static Memory 9% 24M

This is IXP Engines CPU:

IXP Engines

IXP1 34%

IXP2 18%

IXP3 12%

IXP4 0%

IXP5 18%

(82%)

with more HTTP traffic (about 10Mbps):

IXP Engines

IXP1 37%

IXP2 19%

IXP3 13%

IXP4 0%

IXP5 20%

(89%)

as you see, the Usage is too hight while the traffic is too small if compare to its capacity ? and it encrease very fast ?

Look forward to hearing from you soon.

Best Regards

Cisco Employee

Re: Using CSM with 6509 (MSFC2) !!!

the IXP cpu usage is good and these are the CPU that handles all the traffic.

Where do you get the 89% from ?

Can you post the PPC threads CPU info (begining of the command 'sho mod csm x tech util').

Thanks,

Gilles.

New Member

Re: Using CSM with 6509 (MSFC2) !!!

ok

the PPC threads as following:

#sh module contentSwitchingModule 7 tech-support utilization

Software version: 3.2(1)

Resource Utilization:

Memory

Availible Memory 68% 170M

Allocated Memory 24% 61M

OS Static Memory 9% 24M

PPC Threads

CPU STACK Name

0% 5% tExcTask

0% 5% tLogTask

2% 12% tNetTask

0% 3% tWdbTask

1% 21% WatchDog

0% 11% PinnclGmac

0% 12% Scp

0% 12% Scp TxQ

0% 13% IPC RtryTmr

0% 7% IPC MgdTmr

0% 19% IPC SeatMgr

0% 22% ICC Slave

2% 13% IPCP AsyncR

15% 11% IPCP Poll

0% 7% PktDrv Rcv

5% 16% SlowpathArp

0% 9% IPCPCmd Private

0% 13% Topology

0% 17% GSLBPingMgr

0% 17% GSLBDNSMgr

0% 30% GSLBCappUdp

0% 10% GSLBKALAP

0% 9% GSLBHttpMgr

0% 25% GSLBRHttpMsg

0% 52% DNS Server

6% 10% GSLBMon

0% 9% LaminarStack

0% 2% LcscUpdates

2% 36% IPCPCmd Private

0% 9% LcscRouteAdvert

0% 3% reap_drop_stats

9% 1% HealthMon

0% 28% tTracelogDebug

0% 2% CLI Serial

0% 0% Lam Telnet

0% 7% CSRP_repl

0% 6% FTarp

0% 6% FThelper

44% 1% FTReplFlow

2% 9% LRProtocol

1% 13% core_dump

0% 3% core_watch

8% 36% core_usage

0% 3% ScriptPostMortem

0% 30% SLB Request

0% 23% ICC Keep

0% 32% PrefetchSession

0% 37% SLB SendDraco

MACs

MAC0 0% (32745/s) 362 average size.

MAC1 0% (35514/s) 385 average size.

MAC2 0% (32430/s) 353 average size.

MAC3 0% (32262/s) 370 average size.

UNICAST 99% (132865/s)

MULTICAST 0% (14/s)

BROADCAST 0% (72/s)

Buffers

Result 1%

Hash 1%

Analysis 1%

Small 1%

Return 13%

89% is the sum of (IPX1-IPX5) CPU usage.

The capacity of CSM will be total of IPXs CPU usage (sum of (IPX1-IPX5) CPU usage), right ? and why IPX4 CPU is 0% ?

There are many kinds of traffic, is there any efficient way to filter the garbage traffic ?

Best Regards.

thanks.

Cisco Employee

Re: Using CSM with 6509 (MSFC2) !!!

you should not add the cpu of the different ixp.

The ixp work in a pipeline fashion.

The first IXP will do session lookup (detect if this is a new session or traffic part of an existing session)

The 2nd one will do TCP lookup, ...

Finally the last one will do NAT.

The most used IXP are 1 and 5 because they will see all packets of every sesssion.

Your IXP1 being at 39% you're ok.

Regards,

Gilles.

New Member

Re: Using CSM with 6509 (MSFC2) !!!

Ok I see now, thank you so much, Gilles.

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