[cisco-bba] need help on troubleshooting high cpu on 7206 NPE300 LNS

Thu Jan 25 04:11:02 EST 2007

hi Anthony

Can you send the output from 'sh ip traffic'? 

Do 5 shows with a min between each show.

thanks
paul...

________________________________

	From: cisco-bba-bounces at puck.nether.net
[mailto:cisco-bba-bounces at puck.nether.net] On Behalf Of Anthony Law
	Sent: Thursday, January 25, 2007 12:48 AM
	To: cisco-bba at puck.nether.net
	Subject: Re: [cisco-bba] need help on troubleshooting high cpu
on 7206 NPE300 LNS

	Dear all

	Thank you for all of your input. I configured vpdn ip udp ignore
checksum
	& I have corrected a mis-config on our radius server (passing
compression attribute to cisco) now that the L2TP data daemon is running
normal, but I am still facing high cpu on Pool Manager & IP Input
	anymore suggestions?

	CPU utilization for five seconds: 91%/44%; one minute: 91%; five
minutes: 86%
	 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY
Process 
	   1           4       175         22  0.00%  0.00%  0.00%   0
Chunk Manager    
	   2      487964   5014024         97  0.00%  0.00%  0.00%   0
Load Meter       
	   3     1606476    870141       1846  0.00%  0.00%  0.00%   0
CEF Scanner      
	   4    22428792   3318958       6757  0.00%  0.06%  0.05%   0
Check heaps      
	   5   481842360 102963163       4679  9.05%  9.70%  7.90%   0
Pool Manager     
	  37  11275060121049358292       1074 36.02% 35.07% 32.40%   0
IP Input 

	Thank You

	Anthony

________________________________

	> Date: Wed, 24 Jan 2007 02:37:10 +0200
	> From: nitzan.tzelniker at gmail.com
	> To: antnada at hotmail.com
	> Subject: Re: [cisco-bba] need help on troubleshooting high cpu
on 7206 NPE300 LNS
	> CC: cisco-bba at puck.nether.net
	> 
	> You can try
	> 
	> vpdn ip udp ignore checksum
	> 
	> Nitzan
	> 
	> On 1/24/07, Anthony Law <antnada at hotmail.com> wrote:
	> > Dear all,
	> >
	> > We have a 7206 w/NPE300 running as a LNS terminating pppoe
sessions from our
	> > telco. We are concurrently running around 360 pppoe
sessions.
	> >
	> > Recently. I noticed that our 7206 is having extremely high
cpu, at times
	> > going to 100%, please see below
	> >
	> > CPU utilization for five seconds: 99%/42%; one minute: 99%;
five minutes:
	> > 99%
	> > PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
	> > 1 0 75 0 0.00% 0.00% 0.00% 0 Chunk Manager
	> >
	> >
	> > 5 472509060 101324023 4663 7.65% 8.80% 8.84% 0 Pool Manager
	> >
	> > 37 10810547881019294234 1060 22.79% 25.16% 25.51% 0 IP Input
	> >
	> >
	> > 101 705044020 800103660 881 18.89% 21.35% 19.34% 0 L2TP data
	> > daemon
	> > 102 53153196 10197928 5212 2.19% 0.46% 0.45% 0 L2TP mgmt
	> > daemon
	> >
	> >
	> > It seemed that Pool Manager + IP Input + L2TP data daemon
together is
	> > causing this issue. I was searching for documents regarding
this on google
	> > and came to this mailing list. I am wondering if you guys
can help me out by
	> > identifying the mis-configuration that I have on my end as
it is my
	> > understanding that a 7206 should at least take close 1000
pppoe sessions.
	> > Thank You in advance for your input.
	> >
	> >
	> > hostname LNS
	> > !
	> > boot system slot1:c7200-is-mz.122-32.bin
	> > boot system slot1:c7200-is-mz.120-3.T3
	> > aaa new-model
	> > aaa authentication login default local
	> > aaa authentication login no_rad line
	> > aaa authentication ppp default group radius local
	> > aaa authentication ppp vpdn group radius
	> > aaa authorization network default group radius
	> > aaa authorization configuration default group radius
	> > aaa accounting delay-start
	> > aaa accounting exec default start-stop group radius
	> > aaa accounting network default start-stop group radius
	> > enable secret 5 XXXXXXXXXXXXXXXXXXXXXXXXXXX
	> > !
	> > clock timezone EST -5
	> > clock summer-time EDT recurring
	> > ip subnet-zero
	> > no ip source-route
	> > ip cef
	> > !
	> > !
	> > ip name-server XXXXXX
	> > ip name-server XXXXXX
	> > ip name-server XXXXXX
	> > !
	> > vpdn enable
	> > !
	> > vpdn-group XXXXXXXX
	> > accept-dialin
	> > protocol l2tp
	> > virtual-template 1
	> > terminate-from hostname XXXXXX
	> > local name XXXXXXX
	> > lcp renegotiation always
	> > !
	> > interface FastEthernet0/0
	> > ip address X.X.X.X 255.255.255.192
	> > no ip mroute-cache
	> > duplex full
	> > !
	> > interface FastEthernet1/0
	> > no ip address
	> > no ip mroute-cache
	> > duplex full
	> > !
	> > interface FastEthernet1/0.401
	> > description !!XXXXXXXXXXXXXXXXXXXXXXXX!!
	> > encapsulation dot1Q 401
	> > ip address 10.70.X.X 255.255.255.252
	> > no ip mroute-cache
	> > !
	> > interface FastEthernet2/0
	> > description !!Internet Feed!!
	> > ip address Y.Y.Y.Y 255.255.255.252
	> > no ip mroute-cache
	> > duplex full
	> > !
	> > interface Virtual-Template1
	> > mtu 1492
	> > ip unnumbered FastEthernet2/0
	> > peer default ip address pool internet1 internet2
	> > ppp authentication pap vpdn
	> > !
	> > ip local pool internet1 A.A.A.A B.B.B.B
	> > ip local pool internet2 C.C.C.C D.D.D.D
	> > ip classless
	> > ip route 0.0.0.0 0.0.0.0 Y.Y.Y.Y
	> > no ip http server
	> > !
	> > ip radius source-interface FastEthernet0/0
	> > radius-server host X.X.X.X auth-port 1645 acct-port 1646
	> > radius-server host X.X.X.X auth-port 1645 acct-port 1646
	> > radius-server key 7 ZZZZZZZZZZZZZZZ
	> >
	> > Anthony
	> >
	> > ________________________________
	> > Be one of the first to try Windows Live Mail.
	> > _______________________________________________
	> > cisco-bba mailing list
	> > cisco-bba at puck.nether.net
	> > https://puck.nether.net/mailman/listinfo/cisco-bba
	> >
	> >
	> >

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