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I am not sure I understand your question. 10.8.12.6 is the address of the local side of the tunnel. Your tunnel would normally be protected by ipsec. Here is a sample configuration<br />
<br />

<pre><code id="code-20-42225812-1">interface Tunnel900
 ip address 10.8.12.6 255.255.255.252
 ip mtu 1427
 ip flow ingress
 ip tcp adjust-mss 1387
 keepalive 5 3
 tunnel source FastEthernet0
 tunnel mode ipsec ipv4
 tunnel destination 1.1.1.2
 tunnel protection ipsec profile ipsec-vpn</code></pre>
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I am not sure I understand your question. 10.8.12.6 is the address of the local side of the tunnel. Your tunnel would normally be protected by ipsec. Here is a sample configuration



interface Tunnel900
 ip address 10.8.12.6 255.255.255.252
 ip mtu 1427
 ip flow ingress
 ip tcp adjust-mss 1387
 keepalive 5 3
 tunnel source FastEthernet0
 tunnel mode ipsec ipv4
 tunnel destination 1.1.1.2
 tunnel protection ipsec profile ipsec-vpn

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<div class="content wysiwyg-content">
I have got the output of interface, tunnel900 is shwoing as 10.8.12.6, is it local interface IP to initiate the remote VP connection ?<br />
<br />
router#show ip interface brief<br />
Interface &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;IP-Address &nbsp; &nbsp; &nbsp;OK? Method Status &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Protocol<br />
<br />
Tunnel900 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 10.8.12.6 &nbsp; &nbsp; &nbsp; &nbsp;YES NVRAM &nbsp;up &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;up
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I have got the output of interface, tunnel900 is shwoing as 10.8.12.6, is it local interface IP to initiate the remote VP connection ?

router#show ip interface brief
Interface                  IP-Address      OK? Method Status                Protocol

Tunnel900                 10.8.12.6        YES NVRAM  up                    up

router basic question

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.