ADSL掉线问题

whhak

OS: RHEL AS4
ADSL

#ifconfig ppp0
ppp0      Link encapoint-to-Point Protocol
          inet addr:61.149.7.86  P-t-P:24.24.24.24  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1492  Metric:1
          RX packets:191 errors:211 dropped:0 overruns:0 frame:0
          TX packets:208 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3
          RX bytes:128970 (125.9 KiB)  TX bytes:45470 (44.4 KiB)
为什么会有这么多错误呢?但通常能正常上网!
过一段时间就会掉线!请高手解答 :thank

# cat /etc/sysconfig/network-scripts/ifcfg-ppp0
USERCTL=yes
BOOTPROTO=dialup
NAME=DSLppp0
DEVICE=ppp0
TYPE=xDSL
ONBOOT=yes
PIDFILE=/var/run/pppoe-adsl.pid
FIREWALL=NONE
PING=.
PPPOE_TIMEOUT=0
LCP_FAILURE=6
LCP_INTERVAL=20
CLAMPMSS=1412
CONNECT_POLL=6
CONNECT_TIMEOUT=0
DEFROUTE=yes
SYNCHRONOUS=yes
ETH=eth1
PROVIDER=DSLppp0
USER=100000712689
PEERDNS=no
DEMAND=no
PERSIST=yes
IPV6INIT=no