Router Installation and Configuration Manual/Configuring L2TP as LAC

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While support for L2TP Access Concentrator (LAC) mode is incomplete, L2TP tunnels and PPP sessions can be manually established to remote L2TP Network Servers (LNS). L2TP commands must be placed in the local startup script (rc.local) which can be edited from the main menu option 1 (Configuration Menu) => option 1 (Global configuration) => option 4 (Configure rc.local). ===Client configuration=== rc.local: !/bin/sh ################################################################################ # rc.local file, use this to setup your boot-time configuration. # ################################################################################ Extract l2tp rpc.portmap modprobe pppol2tp openl2tpd -u 1701 l2tpconfig ppp profile modify profile_name=default default_route=yes options_file=/etc/l2tp.opts l2tpconfig tunnel create tunnel_name=tun1 dest_ipaddr=205.159.243.1 secret=mypass persist=yes l2tpconfig session create tunnel_name=tun1 user_name=client1 user_password=clientpass Enter the following command from the command line (bash shell) to create the options file that allows the pppd daemon to persist after termination: client1:/usr/local/sand# echo "persist" > /etc/l2tp.opts To start up the tunnel and PPP session enter the following command: client1:/usr/local/sand# /etc/rc.d/rc.local Extracting l2tp... done Modified ppp profile default Created tunnel 47619 Created session 61046 on tunnel tun1 ===Server configuration=== The server will use a standard L2TP LNS mode configuration [[Router Installation and Configuration Manual/Configuring L2TP as LNS]]. For this example we will use local authentication instead of RADIUS using the '''user''' command in wan.conf. user client1 password clientpass ! interface Tunnel0 tunnel mode l2tp tunnel peer name default tunnel local name gw01 tunnel key mypass tunnel virtual-template 1 ! interface Virtual-Template1 ip address 192.168.24.13 255.255.255.248 peer default ip pool pool1 ppp authentication pap chap mtu 1500 ! ip local pool pool1 192.168.24.14 192.168.24.18 ===Troubleshooting=== <pre> eth0 Link encap:Ethernet HWaddr 00:0C:29:57:CC:7C inet addr:205.159.243.30 Bcast:205.159.243.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe57:cc7c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5790333 errors:378 dropped:25 overruns:0 frame:0 TX packets:2838910 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1516769111 (1446.5 Mb) TX bytes:448824887 (428.0 Mb) Interrupt:18 Base address:0x2000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:3835775 errors:0 dropped:0 overruns:0 frame:0 TX packets:3835775 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:506370077 (482.9 Mb) TX bytes:506370077 (482.9 Mb) ppp0 Link encap:Point-to-Point Protocol inet addr:192.168.24.14 P-t-P:192.168.24.13 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:5 errors:0 dropped:0 overruns:0 frame:0 TX packets:3 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:3 RX bytes:134 (134.0 b) TX bytes:30 (30.0 b) client1:/usr/local/sand# ping 192.168.24.13 PING 192.168.24.13 (192.168.24.13) 56(84) bytes of data. 64 bytes from 192.168.24.13: icmp_seq=1 ttl=64 time=0.616 ms 64 bytes from 192.168.24.13: icmp_seq=2 ttl=64 time=0.491 ms 64 bytes from 192.168.24.13: icmp_seq=3 ttl=64 time=0.000 ms 64 bytes from 192.168.24.13: icmp_seq=4 ttl=64 time=0.000 ms --- 192.168.24.13 ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3002ms rtt min/avg/max/mdev = 0.000/0.276/0.616/0.280 ms client1:/usr/local/sand# l2tpconfig tunnel list TunId Peer Local PeerTId ConfigId State 47619 205.159.243.1 205.159.243.30 1987 1 ESTABLISHED client1:/usr/local/sand# l2tpconfig session list tunnel_name=tun1 1 sessions on tunnel tun1:- 61046 client1:/usr/local/sand# l2tpconfig session show tunnel_name=tun1 session_id=61046 Session 61046 on tunnel 47619:- type: LAC Incoming Call, state: ESTABLISHED created at: Jan 13 23:03:56 2010 created by admin: YES, peer session id: 8773 ppp user name: client1 ppp user password: clientpass ppp interface name: ppp0 data sequencing required: OFF use data sequence numbers: OFF trace flags: NONE framing types: SYNC ASYNC bearer types: DIGITAL ANALOG call serial number: 1 connect speed: 1000000 use ppp proxy: NO Peer configuration data:- data sequencing required: OFF framing types: bearer types: call serial number: 1 data rx packets: 99, rx bytes: 5346, rx errors: 0 data tx packets: 40, tx bytes: 1387, tx errors: 0 </pre>

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