a Cisco 2501.configration line this:
Current configuration:
!
version 11.0
service udp-small-servers
service tcp-small-servers
!
hostname Router
!
!
chat-script dialout ABORT ERROR BUSY "" "AT" OK "ATDT\T" TIMEOUT 45 CONNECT\c
!
interface Ethernet0
ip address 192.168.0.253 255.255.255.0
!
interface Serial0
no ip address
shutdown
no fair-queue
!
interface Serial1
no ip address
shutdown
!
interface Async1
ip unnumbered Ethernet0
no ip directed-broadcast
encapsulation ppp
async default routing
async mode interactive
peer default ip address pool dialin_pool
no cdp enable
ppp authentication chap pap callin
!
ip local pool dialin_pool 192.168.0.100
ip route 0.0.0.0 0.0.0.0 Ethernet0
!
line con 0
line aux 0
script dialer dialout
modem InOut
autocommand ppp
transport input all
stopbits 1
rxspeed 38400
txspeed 38400
flowcontrol hardware
line vty 0 4
login
!
end
when callin use a terminal ,the state of async 1 like this:
Async1: Async protocol mode started for 192.168.0.100
Async1: Carrier dropped while interface starting up
%LINK-5-CHANGED: Interface Async1, changed state to reset
Async1: Async protocol mode stopped for 0.0.0.0
%LINK-3-UPDOWN: Interface Async1, changed state to down
Async1: Async protocol mode started for 192.168.0.100
%LINK-3-UPDOWN: Interface Async1, changed state to up
%LINK-5-CHANGED: Interface Async1, changed state to reset
Async1: Async protocol mode stopped for 0.0.0.0
%LINK-3-UPDOWN: Interface Async1, changed state to down
Async1: Async protocol mode started for 192.168.0.100
%LINK-3-UPDOWN: Interface Async1, changed state to up
%LINK-5-CHANGED: Interface Async1, changed state to reset
Async1: Async protocol mode stopped for 0.0.0.0
%LINK-3-UPDOWN: Interface Async1, changed state to down
Async1: Async protocol mode started for 192.168.0.100
%LINK-3-UPDOWN: Interface Async1, changed state to up
%LINK-5-CHANGED: Interface Async1, changed state to reset
Async1: Async protocol mode stopped for 0.0.0.0
%LINK-3-UPDOWN: Interface Async1, changed state to down
---------------
why?and what shall i do?
