I have 80% of cpu load

pacquaviva · ‎10-17-2006

Hi,

I have a 7200 and I have changed the configuration from an interface f0/0.1 to interface f0/0 with the same configuration.

It happens that the load of cpu is increased up to 80% from 25%.

The ip cef is enabled.

I don't know why.

Regards.

Thank you.

Paolo

network.king · ‎10-17-2006

Hi Paola,

Can u pls provide the interface config and " sh proc cpu sorted " output to check further

regards

vanesh k

pacquaviva · ‎10-17-2006

Hi,

the configs are the following:

interface FastEthernet0/0.1

encapsulation dot1Q 1 native

ip address X.X.X.X 255.255.255.128

ip access-group 106 out

ip summary-address eigrp x92x X.X.X.0 255.255.224.0 1

ip policy route-map Ascete-from-out

end

interface fastethernet0/0

ip address X.X.X.X 255.255.255.128

ip access-group 106 out

ip summary-address eigrp x92x X.X.X.0 255.255.224.0 1

ip policy route-map Ascete-from-out

end

vladrac-ccna · ‎10-17-2006

Could you give us the output of :

show ip interface fa0/0

(btw use: show proc cpu | e 0.00)

Vlad

pacquaviva · ‎10-17-2006

Hi,

I try to do the command show ip interface f0/0 e f0/0.1 and I noticed only a difference (

"IP fast switching on the same interface is enabled" in f0/0.1 and "disabled" in the f0/0) as you can see:

FastEthernet0/0.1 is up, line protocol is up

Internet address is x.x.x.x/25

Broadcast address is 255.255.255.255

Address determined by setup command

MTU is 1500 bytes

Helper address is not set

Directed broadcast forwarding is disabled

Multicast reserved groups joined: 224.0.0.10

Outgoing access list is 106

Inbound access list is not set

Proxy ARP is enabled

Security level is default

Split horizon is enabled

ICMP redirects are always sent

ICMP unreachables are always sent

ICMP mask replies are never sent

IP fast switching is enabled

IP fast switching on the same interface is enabled

IP Flow switching is disabled

IP CEF switching is enabled

IP Feature Fast switching turbo vector

IP Feature CEF switching turbo vector

IP multicast fast switching is enabled

IP multicast distributed fast switching is disabled

IP route-cache flags are Fast, CEF

Router Discovery is disabled

IP output packet accounting is disabled

IP access violation accounting is disabled

TCP/IP header compression is disabled

RTP/IP header compression is disabled

Probe proxy name replies are disabled

Policy routing is enabled, using route map Ascete-from-out

Network address translation is disabled

WCCP Redirect outbound is disabled

WCCP Redirect inbound is disabled

WCCP Redirect exclude is disabled

BGP Policy Mapping is disabled

IP multicast multilayer switching is disabled

7200-Acc#

7200-Acc#sh ip int f0/0

FastEthernet0/0 is up, line protocol is up

Internet address is x.x.x.x/25

Broadcast address is 255.255.255.255

Address determined by setup command

MTU is 1500 bytes

Helper address is not set

Directed broadcast forwarding is disabled

Multicast reserved groups joined: 224.0.0.10

Outgoing access list is 106

Inbound access list is not set

Proxy ARP is enabled

Security level is default

Split horizon is enabled

ICMP redirects are always sent

ICMP unreachables are always sent

ICMP mask replies are never sent

IP fast switching is enabled

IP fast switching on the same interface is disabled

IP Flow switching is disabled

IP CEF switching is enabled

IP Feature Fast switching turbo vector

IP Feature CEF switching turbo vector

IP multicast fast switching is enabled

IP multicast distributed fast switching is disabled

IP route-cache flags are Fast, CEF

Router Discovery is disabled

IP output packet accounting is disabled

IP access violation accounting is disabled

TCP/IP header compression is disabled

RTP/IP header compression is disabled

Probe proxy name replies are disabled

Policy routing is enabled, using route map Ascete-from-out

Network address translation is disabled

WCCP Redirect outbound is disabled

WCCP Redirect inbound is disabled

WCCP Redirect exclude is disabled

BGP Policy Mapping is disabled

IP multicast multilayer switching is disabled

7200-Acc#

Nevertheless I put this command on interface f0/0 and the load of CPU remain the same (about 90%).

What can I do?

Thanks

Regards,

Paolo

Harold Ritter · ‎10-17-2006

It would also be nice to have a "show proc cpu sorted" and "show interface fa0/0 switching".

Thanks,

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México

pacquaviva · ‎10-18-2006

Hi take this output from show interface f0/0 switching when its configured the subinterface f0/0.1

7200-Acc#sh interface f0/0 switchin

FastEthernet0/0

Throttle count 4893

Drops RP 9726 SP 0

SPD Flushes Fast 9 SSE 0

SPD Aggress Fast 0

SPD Priority Inputs 2 Drops 0

Protocol Path Pkts In Chars In Pkts Out Chars Out

Other Process 4557 333003 66082 3964920

Cache misses 0

Fast 0 0 20847785 1387756410

Auton/SSE 0 0 0 0

IP Process 100042013 4020783004 39234921 4216032315

Cache misses 1209

Fast 3126385202 2641383635 3024436771 3724178050

Auton/SSE 0 0 0 0

DEC MOP Process 0 0 1108 85316

Cache misses 0

Fast 0 0 0 0

Auton/SSE 0 0 0 0

ARP Process 224516 14367724 47537 3040268

Cache misses 0

Fast 0 0 0 0

Auton/SSE 0 0 0 0

CDP Process 11010 2389170 11036 3640780

Cache misses 0

Fast 0 0 0 0

Auton/SSE 0 0 0 0

PPP over ATM Process 0 0 0 0

Cache misses 0

Fast 0 0 35215000 2358486648

Auton/SSE 0 0 0 0

7200-Acc#

Here the logs when it's configured the main interface with the route-cache same-interface:

7200-Acc#sh int f0/0 switching

FastEthernet0/0

Throttle count 5040

Drops RP 10025 SP 0

SPD Flushes Fast 9 SSE 0

SPD Aggress Fast 0

SPD Priority Inputs 2 Drops 0

Protocol Path Pkts In Chars In Pkts Out Chars Out

Other Process 4570 333718 66122 3967320

Cache misses 0

Fast 0 0 20847785 1387756410

Auton/SSE 0 0 0 0

IP Process 100382254 4267242121 39263557 4230007299

Cache misses 1209

Fast 3128251944 4061004637 3026496371 427678000

Auton/SSE 0 0 0 0

DEC MOP Process 0 0 1108 85316

Cache misses 0

Fast 0 0 0 0

Auton/SSE 0 0 0 0

ARP Process 224689 14378788 47546 3040824

Cache misses 0

Fast 0 0 0 0

Auton/SSE 0 0 0 0

CDP Process 11016 2390472 11045 3643480

Cache misses 0

Fast 0 0 0 0

Auton/SSE 0 0 0 0

PPP over ATM Process 0 0 0 0

Cache misses 0

Fast 0 0 35229027 2359413310

Auton/SSE 0 0 0 0

7200-Acc#

Thanks,

Paolo

mark.edwards · ‎10-18-2006

Hi, I notice you are running policy routing. Do you have many hits on this feature? Have you tried to enable fast switching for policy routing?

"ip route-cache policy"

pacquaviva · ‎10-19-2006

No, I'll try.

I let you know something.

Thanks.

Paolo