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Cisco ASA 5505 - problem with negotiating IP address from PPPoE

Karel Svarc
Level 1
Level 1

Hi all,

I have problem with negotiating IP address from PPPoE. There is following design: ISP providing vDSL ending on VDSL modem in bridge mode. Behind brigde modem is ASA 5505 terminting PPPoE on OUTSIDE. Everything works fine except  negotiating IP address from PPPoE server.

I have configured ASA 5505 with (ASA Version 9.2(2)4) for PPPoE like this [1.]. But If i try to "show" IP address on OUTSIDE interface a get this [2.], ok strange but let's continue. If list "show vpdn pppinterface id 1"  i get this [3.]. Seems that I got public IP addres what was right, but this IP address was not associated with interface OUTSIDE?

Well, if I set IP address manually like this [4.] and also set a default route everything works fine but what will happen when ISP change reservation for my IP address or default gateway. 

I have tried different version of ASA OS like 8.4, 9.1 but without luck. 

Can anybody help me. Thanks a lot.

Regards
Karel

[1.]

interface Vlan100

description >>VLAN pro pripojeni do internetu<<

nameif OUTSIDE

security-level 0

pppoe client vpdn group O2

ip address pppoe setroute

 

vpdn group O2 request dialout pppoe

vpdn group O2 localname O2

vpdn group O2 ppp authentication chap

vpdn username O2 password *****

 

interface Ethernet0/0

description >>uplink O2 vDSL<<

switchport access vlan 100

 

[2.]

ciscoasa(config-if)# show ip address vlan 100 pppoe

ciscoasa(config-if)#  0.0.0.0 255.255.255.255 on Interface: OUTSIDE

 

ciscoasa(config-if)# show interface vlan 100 detail

Interface Vlan2 "OUTSIDE", is up, line protocol is up

 Hardware is EtherSVI, BW 100 Mbps, DLY 100 usec

        Description: >>VLAN pro pripojeni do internetu<<

        MAC address f44e.05d0.6c17, MTU 1492

        IP address unassigned

  Traffic Statistics for "OUTSIDE":

        28 packets input, 1307 bytes

        31 packets output, 721 bytes

        0 packets dropped

      1 minute input rate 0 pkts/sec,  3 bytes/sec

      1 minute output rate 0 pkts/sec,  1 bytes/sec

      1 minute drop rate, 0 pkts/sec

      5 minute input rate 0 pkts/sec,  0 bytes/sec

      5 minute output rate 0 pkts/sec,  0 bytes/sec

      5 minute drop rate, 0 pkts/sec

  Control Point Interface States:

        Interface number is 15

        Interface config status is active

        Interface state is active

[3.]

ciscoasa(config-if)# show vpdn pppinterface id 1

PPP virtual interface id = 1

PPP authentication protocol is CHAP

Server ip address is 88.103.200.41

Our ip address is 85.71.188.158

Transmitted Pkts: 20, Received Pkts: 16, Error Pkts: 0

MPPE key strength is None

  MPPE_Encrypt_Pkts: 0,  MPPE_Encrypt_Bytes: 0

  MPPE_Decrypt_Pkts: 0,  MPPE_Decrypt_Bytes: 0

  Rcvd_Out_Of_Seq_MPPE_Pkts: 0

ciscoasa(config-if)# show vpdn session state

%No active L2TP tunnels

%No active PPTP tunnels

PPPoE Session Information (Total tunnels=1 sessions=1)

SessID TunID Intf     State       Last Chg

22298      2 OUTSIDE  SESSION_UP  561 secs

 

[4.]

interface Vlan100

 description >>VLAN pro pripojeni do internetu<<

 nameif OUTSIDE

 security-level 0

 pppoe client vpdn group O2

 ip address 85.71.188.158 255.255.255.255 pppoe setroute

 route OUTSIDE 0.0.0.0 0.0.0.0 88.103.200.41 1

 

 

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