[nsp] high cpu load on 2651

[Jim Littlefield]

Beprojects.com wrote:

>With what config and what packet size?  
>  
>

We originally wanted to tunnel voice traffic (using a pair of Rad boxes) 
for a remote PBX across a 45MB/s link; packet size was 40 bytes. We have 
since moved the voice to a dedicated T1, but the 2651's still 
occasionally run out of CPU with normal day-to-day traffic. We put a 
Packeteer on one side to look for anything unusual, but nothing "funny" 
showed up.

Here is a config from one of the routers:

version 12.2
service timestamps debug datetime localtime
service timestamps log datetime localtime
service password-encryption
!
hostname pvd-gw
!
logging buffered 4096 debugging
!
memory-size iomem 15
clock timezone EST -5
clock summer-time EDT recurring
ip subnet-zero
ip cef
!
ip multicast-routing
ipx routing 000b.fdd8.6ba0
!
voice call carrier capacity active
!
mta receive maximum-recipients 0
!
buffers small permanent 85
buffers small max-free 122
buffers small min-free 25
buffers middle permanent 40
buffers middle max-free 57
buffers middle min-free 12
buffers big permanent 65
buffers big max-free 92
buffers big min-free 19
buffers verybig permanent 13
buffers verybig max-free 18
buffers verybig min-free 3
!
stun peer-name 192.168.254.134
stun protocol-group 1 basic
stun protocol-group 2 basic
stun remote-peer-keepalive
!
interface Loopback0
 ip address 192.168.254.134 255.255.255.255
!
interface FastEthernet0/0
 no ip address
 load-interval 30
 speed 100
 full-duplex
 fair-queue
 hold-queue 250 in
!
interface FastEthernet0/0.1
 encapsulation dot1Q 1 native
 ip address 192.168.128.1 255.255.255.0
 ip pim dense-mode
 ip cgmp
 ipx encapsulation NOVELL-ETHER
 ipx network 358
!
interface FastEthernet0/0.252
!
interface Serial0/0
 bandwidth 1536
 ip address 192.168.254.130 255.255.255.252
 ipx network 360
 service-module t1 timeslots 1-24
!
interface FastEthernet0/1
 bandwidth 46080
 ip address 192.168.254.2 255.255.255.128
 ip accounting output-packets
 ip hello-interval eigrp 100 1
 ip hold-time eigrp 100 3
 load-interval 30
 speed 100
 full-duplex
 ipx network 359
!
router eigrp 100
 redistribute connected
 redistribute static
 network 192.168.252.0
 network 192.168.254.0
 no auto-summary
 no eigrp log-neighbor-changes
!
router rip
 redistribute eigrp 100 metric 3
 network 192.168.128.0
!
ip classless
ip route 192.168.252.0 255.255.255.248 192.168.254.129 200
no ip http server
!
ipx router eigrp 200
 network 359
 network 360
!
ipx router rip
 no network 360
 no network 359
!
snmp-server community public RO
snmp-server enable traps tty
call rsvp-sync
!
mgcp profile default
!
dial-peer cor custom
!
end


-- 
Jim Littlefield            "I have a red sign on my door. It says, 
                            'If this sign is blue, you're moving
                            too fast.'" - Steven Wright