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icnd1:gre

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icnd1:gre [2024/03/14 16:18]
114.119.130.33 old revision restored (2023/10/29 22:17) 		icnd1:gre [2024/03/14 16:48] (current)
114.119.149.71 old revision restored (2017/07/23 16:50)
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 ====Configuration Example==== ====Configuration Example====
-=== Topology === 
 Assuming all destinations are ''**routable**'' -- creating a basic ''**GRE Tunnel**'' over the following topology: Assuming all destinations are ''**routable**'' -- creating a basic ''**GRE Tunnel**'' over the following topology:
 {{:icnd1:gre-topology.png?nolink|}} {{:icnd1:gre-topology.png?nolink|}}
Line 10: Line 9:
   * 3 routers / 2 subnets   * 3 routers / 2 subnets
   * R1 and R3 Loopback0 interfaces   * R1 and R3 Loopback0 interfaces
-  * We will create the 172.16.0.0 /30 GRE Tunnels over R1 and R3. +  * We will create 172.16.0.0 /30 GRE Tunnel.
- +
- +
- +
-=== Tunnel Configuration === +
-R1-- +
-<code> +
-R1#conf t +
-Enter configuration commands, one per line.  End with CNTL/Z. +
-R1(config)#int tunnel 100 +
-R1(config-if)#tunnel source loopback 0 +
-R1(config-if)#tunnel destination 10.35.0.1 +
-*Mar  1 00:01:05.803: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel100, changed state to up +
-</code> +
- +
-  * At this point of R1, Tu100 is UP/UP and 172.16.0.0/30 is directly connected via Tu100 in the table. Pings to 172.16.0.2 fail until R3 is configured. +
- +
-R3-- +
-<code> +
-R3#conf t +
-Enter configuration commands, one per line.  End with CNTL/Z. +
-R3(config)#interface tunnel 100 +
-R3(config-if)#ip address 172.16.0.2 255.255.255.252 +
-R3(config-if)#tunnel source loopback 0 +
-R3(config-if)#tunnel destination 10.15.0.1 +
-*Mar  1 00:12:56.219: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel100, changed state to up +
-</code> +
-  * At this point of R3, Tu100 is UP/UP and 172.16.0.0/30 is directly connected via Tu100 in the table. Pings should succeed between points of the tunnel. Ping and trace outputs below from R1 to R3's Tu100 172.16.0.2/30 +
- +
-<code> +
-x +
-</code>+
icnd1/gre.1710433134.txt.gz · Last modified: 2024/03/14 16:18 by 114.119.130.33

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