problem in cisco 1841 with Virtual-Access Interface

[adma.ashraf]

Hi evryone

I have a problem in my Cisco 1841 in Virtual-Access Interface  all interfaces is UP Except Virtual Access is Down  ,

ROUTER#show ip int brief
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            41.208.109.241  YES NVRAM  up                    up
FastEthernet0/1            unassigned      YES NVRAM  administratively down down
ATM0/0/0                   unassigned      YES NVRAM  up                    up
ATM0/0/1                   unassigned      YES NVRAM  up                    up
Virtual-Access1            unassigned      YES unset  up                    up
Virtual-Access2            unassigned      YES unset  up                    down
Virtual-Access3            unassigned      YES unset  up                    up
Dialer0                          X.X.X.X   YES NVRAM  up                    up
Dialer1                         X.X.X.X   YES NVRAM  up                    up

This is my ATM and Dialer  Config .

!
interface ATM0/0/0
no ip address
load-interval 600
no atm ilmi-keepalive
pvc 8/36
  encapsulation aal5mux ppp dialer
  dialer pool-member 1
!
!
interface ATM0/0/1
no ip address
load-interval 600
no atm ilmi-keepalive
pvc 8/36
  encapsulation aal5mux ppp dialer
  dialer pool-member 2
!
interface Dialer0
ip address x.x.x.x 255.255.255.254
no ip redirects
no ip unreachables
no ip proxy-arp
encapsulation ppp
dialer pool 1
dialer-group 1
!
interface Dialer1
ip address xx.x.x.x 255.255.255.254
no ip redirects
no ip unreachables
no ip proxy-arp
encapsulation ppp
dialer pool 2
dialer-group 2

when i want recover the virtual access to up ,should i do shut & no shut to the ATM interface.

My question is:
What is the cause of the problem, and how I can solve this issue?

thanks alot

[cadet alain]

Hi,

Can you ping ip addresses on internet? if yes then you've got no problem.

Regards.

Alain.

[adma.ashraf]

dear Alain ,,

yes i can ping ip addresses on internet ,because i got internet over two interfaces ,

in my case the the speed is 4Mbps when one of virtual access goes down the speed is decrees into 2Mbps  .

thanks alot