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Cisco GRE Tunnel - Revision history
2026-04-05T08:27:07Z
Revision history for this page on the wiki
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http://wiki.ciscolinux.co.uk/index.php?title=Cisco_GRE_Tunnel&diff=1760&oldid=prev
Pio2pio at 21:20, 5 December 2015
2015-12-05T21:20:16Z
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 23:20, 5 December 2015</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:Gre_tunnel.png|none|left|Gre tunnel]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:Gre_tunnel.png|none|left|Gre tunnel]]</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> R1(config)# interface Tunnel0 <del style="font-weight: bold; text-decoration: none;">R1</del>(config)# interface Tunnel0 </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> R1(config)# interface Tunnel0 <ins style="font-weight: bold; text-decoration: none;">R2</ins>(config)# interface Tunnel0 </div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> R1(config)# tunnel mode gre ip <del style="font-weight: bold; text-decoration: none;">R1</del>(config)# tunnel mode gre ip !tunnel interface is GRE over IP</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> R1(config)# tunnel mode gre ip <ins style="font-weight: bold; text-decoration: none;">R2</ins>(config)# tunnel mode gre ip !tunnel interface is GRE over IP</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> R1(config)# ip address 10.1.1.1 255.255.255.252 <del style="font-weight: bold; text-decoration: none;">R1</del>(config)# ip address 10.1.1.2 255.255.255.252 </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> R1(config)# ip address 10.1.1.1 255.255.255.252 <ins style="font-weight: bold; text-decoration: none;">R2</ins>(config)# ip address 10.1.1.2 255.255.255.252 </div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> R1(config)# tunnel source 209.165.201.1 <del style="font-weight: bold; text-decoration: none;">R1</del>(config)# tunnel source 198.133.219.87</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> R1(config)# tunnel source 209.165.201.1 <ins style="font-weight: bold; text-decoration: none;">R2</ins>(config)# tunnel source 198.133.219.87</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> R1(config)# tunnel destination 198.133.219.87 <del style="font-weight: bold; text-decoration: none;">R1</del>(config)# tunnel destination 209.165.201.1</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> R1(config)# tunnel destination 198.133.219.87 <ins style="font-weight: bold; text-decoration: none;">R2</ins>(config)# tunnel destination 209.165.201.1</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> R1(config)# router ospf 1 <del style="font-weight: bold; text-decoration: none;">R1</del>(config)# router ospf 1 </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> R1(config)# router ospf 1 <ins style="font-weight: bold; text-decoration: none;">R2</ins>(config)# router ospf 1 </div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> R1(config-router)# network 10.1.1.1 0.0.0.3 area 0 <del style="font-weight: bold; text-decoration: none;">R1</del>(config-router)# network 10.1.1.1 0.0.0.3 area 0</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> R1(config-router)# network 10.1.1.1 0.0.0.3 area 0 <ins style="font-weight: bold; text-decoration: none;">R2</ins>(config-router)# network 10.1.1.1 0.0.0.3 area 0</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>= Troubleshooting =</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>= Troubleshooting =</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> show ip interface brief | include Tunnel</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> show ip interface brief | include Tunnel</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> show interface Tunnel 0</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> show interface Tunnel 0</div></td></tr>
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Pio2pio
http://wiki.ciscolinux.co.uk/index.php?title=Cisco_GRE_Tunnel&diff=1692&oldid=prev
Pio2pio: Created page with "'''Generic Routing Encapsulation (GRE)''' - RFC 2784 - developed by Cisco is non-secure, stateless (no flow control), site-to-site VPN tunneling protocol. The '''Protocol Type..."
2015-04-06T19:18:12Z
<p>Created page with "'''Generic Routing Encapsulation (GRE)''' - RFC 2784 - developed by Cisco is non-secure, stateless (no flow control), site-to-site VPN tunneling protocol. The '''Protocol Type..."</p>
<p><b>New page</b></p><div>'''Generic Routing Encapsulation (GRE)''' - RFC 2784 - developed by Cisco is non-secure, stateless (no flow control), site-to-site VPN tunneling protocol. The '''Protocol Type''' field holds identifier for a passenger protocol (encapsulated L3 OSI protocol) - defined in RFC 1700 as ''EtherTypes''.<br />
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[[File:Gre-tunnel-diagram.gif|none|left|Gre tunnel diagram]]<br />
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= Configuration =<br />
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[[File:Gre_tunnel.png|none|left|Gre tunnel]]<br />
<br />
R1(config)# interface Tunnel0 R1(config)# interface Tunnel0 <br />
R1(config)# tunnel mode gre ip R1(config)# tunnel mode gre ip !tunnel interface is GRE over IP<br />
R1(config)# ip address 10.1.1.1 255.255.255.252 R1(config)# ip address 10.1.1.2 255.255.255.252 <br />
R1(config)# tunnel source 209.165.201.1 R1(config)# tunnel source 198.133.219.87<br />
R1(config)# tunnel destination 198.133.219.87 R1(config)# tunnel destination 209.165.201.1<br />
R1(config)# router ospf 1 R1(config)# router ospf 1 <br />
R1(config-router)# network 10.1.1.1 0.0.0.3 area 0 R1(config-router)# network 10.1.1.1 0.0.0.3 area 0<br />
<br />
= Troubleshooting =<br />
show ip interface brief | include Tunnel<br />
show interface Tunnel 0</div>
Pio2pio