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<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal>Dear friends!<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I am trying to establish a L2TP tunnel between a LAC (Which
is also Acting as BRAS) and LNS (Which is also acting as BRAS). <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>User ---------[Cisco 3640 LAC]----- IP Cloud-------[Cisco
3845 LNS]<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The problem I am facing is that the scenario is working fine
as long as I am using user account created locally on LNS. <u>However as
soon as I enable radius parameters,</u> LAC stops establishing tunnel with LNS
and connects the user on LAC as pppoe user. After investigation I have found
that If I remove following line from the configuration L2TP Tunnels works
perfectly fine; <o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#C00000'>aaa authorization network
default group radius<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal>Can someone tell me Why its happening?? Since I am using
@domain in user ids for L2TP users, LAC should not even refer to Radius.
And I need this aaa authorization parameter since both my LAC and LNS
also have PPPoE users terminated on them.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Following is my LAC and LNS configuration after including my
radius parameteres, same configuration works fine without radius parameters.<o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><b><u><span style='color:#1F497D'>LAC Configuration<o:p></o:p></span></u></b></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aaa authentication login default
local<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aaa authentication ppp default
group radius local<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aaa authorization network
default group radius <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aaa accounting delay-start <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aaa accounting session-duration
ntp-adjusted<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aaa accounting update periodic
15<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aaa accounting network default
start-stop group radius<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aaa nas port extended<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aaa session-id common<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>!<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>ip cef<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>vpdn enable<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>vpdn multihop<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>!<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>vpdn-group 1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> request-dialin<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> protocol l2tp<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> multihop hostname DSL-LNS<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> domain cybernet<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> initiate-to ip 1.1.1.1 <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> source-ip 2.2.2.2<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> local name DSL-LAC<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> no l2tp tunnel
authentication<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>!<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>bba-group pppoe global<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> virtual-template 1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>!<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>interface Serial2/1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> description *** Connected
to LNS ***<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> ip address 2.2.2.2
255.255.255.252<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> encapsulation ppp<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>interface ATM3/0.2 multipoint<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> pvc vpdn 0/36 <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> encapsulation aal5snap<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> protocol pppoe group
global<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>interface Virtual-Template1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> ip unnumbered Serial2/1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> peer default ip address
pool home-dsl<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> ppp authentication pap<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><b><u><span style='color:#1F497D'>LNS Configuration<o:p></o:p></span></u></b></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aaa authentication login default
local<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aaa authentication ppp default
group radius local<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aaa authorization network
default group radius <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aaa accounting delay-start <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aaa accounting session-duration
ntp-adjusted<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aaa accounting update periodic
15<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aaa session-id common<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>!<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>vpdn enable<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>vpdn multihop<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>!<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>vpdn-group 1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> accept-dialin<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> protocol l2tp<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> virtual-template 1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> terminate-from hostname
DSL-LAC<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> local name DSL-LNS<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> lcp renegotiation
on-mismatch<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> no l2tp tunnel
authentication<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>!<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>interface GigabitEthernet0/1.7<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> description *** LAC
Management ***<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> encapsulation dot1Q 7<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> ip address 1.1.1.1
255.255.255.252<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>!<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>interface Virtual-Template1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> ip unnumbered
GigabitEthernet0/1.7<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> peer default ip address
pool PPPoE<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> ppp authentication pap<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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