Cisco 871 performance after ipsec vpn enable

HI,

I have a strange problem with my Cisco 871 router.
After enabling Ipsec VPN on the router the internet speed drops to 50% of the original, even when no clients are connected.

Did any one heard or had experience with this issue?

See below for VPN config:

crypto isakmp policy 1
 encr 3des
 authentication pre-share
 group 2
!
crypto isakmp client configuration group teleworker
 key *****
 pool VPNIPPOOL
 acl 105
 netmask 255.255.255.0
!
!
crypto ipsec transform-set myset esp-3des esp-sha-hmac
!
crypto dynamic-map DYNMAP 1
 set transform-set myset
 reverse-route
!
!
!
crypto map VPNMAP client authentication list default
crypto map VPNMAP isakmp authorization list default
crypto map VPNMAP client configuration address respond
crypto map VPNMAP 10 ipsec-isakmp dynamic DYNMAP


Thanks,
nvdkloorAsked:
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Steve JenningsConnect With a Mentor IT ManagerCommented:
Yep, thats a lot of work for a small router. For, grins try DES

Steve
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eeRootConnect With a Mentor Commented:
What is the CPU and memory utilization?  Any errors in the log?  Do you notice the speed decrease when connecting to an internet site by the IP address, DNS name, or both?  If you roll back the config to an earlier version that does not have the VPN enabled, does  your speed improve?  
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Steve JenningsIT ManagerCommented:
Remove the crypto mao from the interface and see whst happens. 3des and group2 should not crater your router

Steve
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nvdkloorAuthor Commented:
yes the speed gets back to normal when disabling vpn or removing the crypto map command.
Maybe the hardware is not powefull enough for ipsec.

Let me try using a less secure vpn setup.
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Istvan KalmarHead of IT Security Division Commented:
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
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