AR18-22路由器

H3C AR18-22路由器 2个 WAN端口 分别配置如下：
#
interface Dialer0
link-protocol ppp
ppp chap user sz004115@163.gd
ppp chap password cipher L9M2%U8"KJGQ=^Q`MAF4<<"TX$_S#6.NM(0=0\)*5WWQ=^Q`MAF4<<
"TX$_S#6.N
ppp pap local-user sz004115@163.gd password cipher L9M2%U8"KJGQ=^Q`MAF4<<"TX$_S
#6.NM(0=0\)*5WWQ=^Q`MAF4<<"TX$_S#6.N
ppp ipcp dns request
mtu 1492
tcp mss 1024
ip address ppp-negotiate
dialer user ABC
dialer bundle 1
dialer timer idle 0
dialer-group 1
nat outbound 3001
firewall packet-filter 3000 inbound
firewall packet-filter 3000 outbound
#
interface Dialer1
link-protocol ppp
ppp chap user sz739031968@163.gd
ppp chap password cipher 0[ 7XL(DFX3Q=^Q`MAF4<<"TX$_S#6.NM(0=0\)*5WWQ=^Q`MAF4<<
"TX$_S#6.N
ppp pap local-user sz739031968@163.gd password cipher 0[ 7XL(DFX3Q=^Q`MAF4<<"TX
$_S#6.NM(0=0\)*5WWQ=^Q`MAF4<<"TX$_S#6.N
ppp ipcp dns request
mtu 1499
tcp mss 1024
ip address ppp-negotiate
dialer user ABC
dialer bundle 2
dialer timer idle 0
dialer-group 1
nat outbound 3001
firewall packet-filter 3000 inbound
firewall packet-filter 3000 outbound

由于更换了第二个WAN的宽带账号和密码，我如何去更改呢？