Differences between current version and predecessor to the previous major change of GRETunnel.
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| Newer page: | version 4 | Last edited on Thursday, January 16, 2003 3:44:44 pm | by LindsayDruett | |
| Older page: | version 2 | Last edited on Thursday, January 16, 2003 12:01:13 pm | by DanielLawson | Revert |
@@ -51,4 +51,31 @@
${IP} link set ${NAME} down
${IP} tunnel del ${NAME}
----------------------
+
+----
+!For Cisco Routers
+
+This sample config is done with a Cisco 2514 router. In this example the outside interface (internet side) is Ethernet 1, and LAN interface is Ethernet 0.
+
+----------------------
+__router#__config t%%%
+__router(config)#__interface tunnel 0%%%
+__router(config-if)#__ip address ''<<ip.of.gre0.here>> <<subnet mask>>''%%%
+__router(config-if)#__tunnel source ethernet 1 (or ''<<ip.of.this.end>>'')%%%
+__router(config-if)#__tunnel destination ''<<ip.of.other.end>>''%%%
+__router(config)__#ip route 10.0.0.0 255.0.0.0 tunnel 0%%%
+__router(config)__#end%%%
+----------------------
+
+To verify the VPN is working
+*show ip int tunnel0
+*show ip route
+*ping ''<<ip.of.gre0.at.other.end>>''
+
+Other considerations
+
+*MTU size may need to be adjusted due to the increased overall length of the ethernet frame
+*The VPN is not secure until the crypto maps have been applied
+*Don't forget about your ACLs (if you have any), you can add this ACE
+access-list ''<<extended IP ACL>>'' permit gre host ''<<ip.of.other.end>>'' host ''<<ip.of.this.end>>''
