The stf interface is necessary for site border router called 6to4 router in the. The video walks you through configuration of 6to4 pointtomultipoint tunnel on cisco router to transport ipv6 traffic over ipv4 network among multiple ipv6 sites. View vpn tunnel status and get help monitoring firewall high availability, health, and readiness. In this article we will discuss using 6to4 tunneling in your windows machine. Before you enable a 6to4 tunnel to a 6to4 relay router, complete the following tasks.
Lets take a look at an actual configuration of automatic 6to4 tunneling, this. This means that the original ip packet will be encapsulated in a new ip packet and encrypted before it is sent out of the network. The reason that a 6to4 tunnel and an ipv4compatible tunnel cannot share an interface is that both of them are nbma pointtomultipoint access links and only the tunnel source can be used to reorder the packets from a multiplexed packet stream into a single packet stream for an incoming interface. Implementing tunneling for ipv6 support cisco systems. If you have trouble calculating the ipv4 address in hexadecimal you can use the ipv6 generalprefix myprefix 6to4 fastethernet00 command. A 6to4 tunnel is configured on an enterprise dualstack border router. Also note that that the prefix length for a 6to4 address is 16 because of from network point of view, all. This video explains you how to solve the ipv6 6to4 tunneling lab found on gns3vault. To configure our 6to4 tunnels, we need to set the tunnel mode ipv6ip 6to4, specify the tunnel source and also configure the 6to4 ipv6 address for that tunnel. Ausgerechnet im vpnumfeld kann ipv6 probleme bereiten.
The 6to4 protocol defines several components that participate in the transmission of packets. It can tunnel ipv6 traffic over ipv4, as specified in rfc3056. All are available for windows, macos and linux platforms. Review the security issues that are involved in tunneling to a 6to4 relay router. Thus, when configuring a 6to4 router, you must also configure the router as an ipv6 router on its physical interfaces. Packet analysis on wireshark will be performed to help us. The internet protocol version 6 ipv6 is the new generation protocol to succeed the current protocol version, internet protocol version 4 ipv4 ipv6 was created to address the concern about the shortage of ipv4 addresses available. In order to do this, we will use a very popular tunnel broker service provided by hurricane electric. We will look at characteristics and requirements to implement 6rd tunnel, and highlight its pros and cons. Setup of 6to4 tunnels pay attention that the support of 6to4 tunnels currently lacks on vanilla kernel series 2.
Configuring cisco dynamic multipoint vpn dmvpn hub. Before you configure 6to4 routing on an ipv6 network, you must have done the following. The process of configuring a 6to4 tunnel includes configuring the boundary router as a 6to4 router. It allows you to manage your ipv4, ipv6 and dns spaces. Engineers familiar with gre tunnels will immediately notice the absence of the tunnel destination command. Cisco recommends that you use the ipv6 isatap tunneling technique. Ipv6 tunneling technology configuration cisco press.
Download for free the latest versions of ciscos configuration professional, network assistance and anyconnect secure mobility client. Refer to isatap tunnels for more information on this technique. We will look at characteristics and requirements to implement 6to4 tunnel, and highlight its pros and cons. There is no need to configure a tunnel destination with the automatic ipv6 mode. It would be better if a configuration example is provided too. The border router at each end of a 6to4 tunnel must support both the ipv4 and ipv6 protocol stacks. The ip protocol number for 6in4 is 41, per iana reservation the 6in4 packet format consists of the ipv6 packet preceded by an ipv4 packet header. Ive searched for some tutorials but i cant figure out which address to use as parameters when setting up the tunnel. This optional task explains how to verify tunnel configuration and operation. For ordinary nodes in 6to4 site, you do not need stf interface. It will convert the ipv4 address in hexadecimal and give you the correct ipv6 tunnel prefix with the show ipv6 generalprefix command. How to configure a 6to4 tunnel administering tcpip. This ccie oriented episode of quick configs goes into automatic 6to4 tunneling of ipv6 traffic over ipv4. Free ccna network fundamentals day 1 200125 free cisco video training networking 2018 duration.
Special relay servers are also in place that allow 6to4 networks to communicate with native ipv6 networks. Dual stack and tunneling using gre, 6to4, and 6in4. Configuring pointtopoint gre vpn tunnels unprotected. Pay attention that the support of 6to4 tunnels currently lacks on vanilla kernel series 2.
How to enable a 6to4 tunnel to a 6to4 relay router. Im not sure if this is available on the ccnp route exam but its nice to know anyway. It has been replaced with the tunnel mode gre multipointcommand, which designates this tunnel as a multipoint gre tunnel the ip nhrp map multicast dynamic command enables the forwarding of multicast traffic across the tunnel to dynamic spokes. Perform this task to configure a gre tunnel on an ipv6 network. Free download cisco configuration professional ccp 2. All the enterprise ipv6 traffic destined for the 6bone is routed over ipv4 through the tunnel to the 6bone isp 6to4 relay router. Quick configs automatic 6to4 ipv6 tunneling youtube. Nagiosql nagios configuration tool nagiosql is a professional, web based. The 6to4 router functions as the endpoint of a 6to4 tunnel between your network and an endpoint router at a remote ipv6 network. Rfc 3056 connection of ipv6 domains via ipv4 clouds february 2001 note that if the ipv4 address is assigned dynamically, the corresponding ipv6 prefix will also be dynamic in nature, with the same lifetime. The configuration on the isatap router is as follows.
If your ipv6 network needs to communicate with a remote ipv6 network, consider using automatic, 6to4 tunnels. Ensure you can ping each others loopback0 interfaces on router pim and pet through the tunnel interface. When configuring 6to4 tunnels, a 6to4 router must act as the ipv6 router to the nodes that are in the networks 6to4 sites. Main limitation of 6to4 tunnel is its inflexibility of ip scheme. Enable a tunnel to the 6to4 relay router by using either of the following methods. Configured ipv6 on all appropriate nodes at the prospective 6to4 site, as described in how to enable ipv6 on a node selected at least one router with a connection to an ipv4 network to become the 6to4 router. Interface and hardware component configuration guide, cisco ios xe release 3s. As with ipv4compatible ipv6 tunnels, we will not specify a tunnel destination. How to configure a 6to4 router ipv6 administration guide.
Ipv6 implementation guide, cisco ios xe release 3s. Connexion 6bone utilisant les tunnels 6to4 pour ipv6 cisco. When configuring a 6to4 providermanaged tunnel pmt, replace the anycast destination with the address of a managed relay in the provider network. The configuration of only one ipv4compatible tunnel and one 6to4 ipv6 tunnel is supported on a router. Gre routing between networks, gre over ipsec and verification commands are included to ensure the gre ipsec tunnel is operating. It is a tunneling protocol that encapsulates ipv6 packets on specially configured ipv4 links according to the specifications of rfc 42. The video walks you through configuration of 6rd pointtomultipoint tunnel on cisco router to transport ipv6 traffic over ipv4 network among multiple ipv6 sites. Arnold schwarzenegger this speech broke the internet and most inspiring speech it changed my life. The following example configures a 6to4 tunnel on a border router in an isolated ipv6 network. How to configure cisco ipv6 6to4 tunnel lab minutes. Configuring a 6to4 providermanaged tunnel techlibrary.
422 930 316 729 32 497 254 1343 12 796 1029 1560 839 1510 761 1596 564 729 193 1214 788 898 76 1058 544 1256 498 725 1152