Basically just another DHCP interface IP-wise. Here's a sample configuration for DMVPN/IPSEC I used for 1841 3G-EVDO. I used it as a primary connection as well as backup connection.
interface Dialer1 ip address negotiated ip virtual-reassembly encapsulation ppp dialer pool 1 dialer idle-timeout 0 dialer string cdma dialer persistent dialer-group 1 ! interface Cellular0/1/0 ip address negotiated ip virtual-reassembly encapsulation ppp dialer in-band dialer pool-member 1 dialer-group 1 ! crypto isakmp policy 1 encr aes 256 authentication pre-share group 5 crypto isakmp key test address x.x.x.x crypto isakmp keepalive 10 4 periodic ! ! crypto ipsec transform-set cisco esp-aes 256 esp-sha-hmac mode transport ! crypto ipsec profile cisco set transform-set cisco set pfs group5 ! interface Tunnel0 bandwidth 1000 ip address 10.0.0.2 255.255.255.0 ip mtu 1400 ip nhrp authentication donttell ip nhrp map 10.0.0.1 x.x.x.x ip nhrp map multicast x.x.x.x ip nhrp network-id 99 ip nhrp holdtime 300 ip nhrp nhs 10.0.0.1 ip tcp adjust-mss 1360 delay 100 tunnel source dialer1 tunnel mode gre multipoint tunnel key 100000 tunnel protection ipsec profile cisco You could use IPSEC tunnel mode without DMVPN as well, just make sure the other side configured for dynamic crypto map. Regards, Luan Nguyen Chesapeake NetCraftsmen, LLC. www.NetCraftsmen.net -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Thursday, November 06, 2008 3:57 AM To: [email protected] Subject: [c-nsp] Cisco 881 3G Router Experiences Hi, is anybody here using a Cisco 881 3G Router with IPSEC and can share his experiences/config with me ? Cheers Anton Anton Schweitzer Senior Specialist BS Projekt & Service Customer Design o2 (Germany) GmbH & Co.OHG Georg Brauchle-Ring 23-25, D-80992 München Tel +49(0)89-2442-5794 Mobil +49(0)176-23407715 Fax +49(0)89-2442-4281 [EMAIL PROTECTED] Telefónica o2 Germany GmbH & Co. OHG • Georg-Brauchle-Ring 23-25 • 80992 München • Deutschland • www.o2.com/de Ust.-Id.-Nr. DE 811 889 638. Amtsgericht München HRA 70343. Gesellschafter: Telefónica o2 Germany Management GmbH. Amtsgericht München HRB 109061 und Telefónica o2 Germany Verwaltungs GmbH. Amtsgericht München HRB 121389, beide ebenda. Geschäftsführer beider Gesellschafter: Jaime Smith Basterra, Vorsitzender. Antonio Botas Banuelos. Andrea Folgueiras. André Krause. Lutz Schüler. Carsten Wreth. _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
