3Com MSR 50 Series Configuration Manual page 172

172 C 6: DCC C
HAPTER ONFIGURATION
n
service-type ppp command. You need to select either approach with the dialer
callback-center command.
You need to configure callback client usernames with the dialer route command,
so that the callback server can authenticate whether a callback client is valid when
receiving a call from it.
Follow these steps to configure PPP callback server in the C-DCC implementation:
To do...
Enter system view
Enter dialer interface view
Enable PPP callback server
Configure the PPP callback reference dialer callback-center
Add a callback client username
Exit to system view
Configure either If the
command dial-number
depending on keyword is
the keyword configured, create
configured with and enter local
the dialer user view to
callback-center configure a
command callback user and
the dial string for
callback
If the user
keyword is
configured,
configure a dial
string for callback
If the network address used by a callback client is dynamically assigned,
■
configuring the dialer route command to associate the callback dial string
with the network address for the client may result in callback failure. In this
case, you should use the service-type ppp command instead to associate the
dial string with the client username for callback.
To leave enough time for a server to call back, the interval between two calls
■
on the client need to be at least 10 seconds longer than that of the server. It is
recommended that the interval on the server be set to 5 seconds (the default)
and that on the client be set to 15 seconds.
Use the command...
system-view
interface dialer number
ppp callback server
[ user | dial-number ] *
dialer route protocol
next-hop-address [ mask
network-mask-length ]
user hostname
[ broadcast ]
[ dial-number [ autodial |
interface interface-type
interface-number ] * ]
quit
local-user user-name
service-type ppp
[ callback-nocheck |
callback-number
callback-number |
call-number call-number
[ subcall-number ] ]
dialer route protocol
next-hop-address [ mask
network-mask-length ]
user hostname
[ broadcast ] dial-number
[ autodial | interface
interface-type
interface-number ] *
Remarks
--
--
Required
Disabled by default.
Required
Required
--
Required