Huawei quidway s7700 - Example for Configuring the CE to Access a VPN through a GRE Tunnel of the Public Network

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tunnel-protocol gre

source 30.1.1.2

destination 20.1.1.1

ospf 1

area 0.0.0.0

network 30.1.1.0 0.0.0.255

ospf 2

area 0.0.0.0

network 40.1.1.0 0.0.0.255

network 10.2.1.0 0.0.0.255

return

2.7.3 Example for Configuring the CE to Access a VPN Through a

GRE Tunnel of the Public Network

Networking Requirements

As shown in Figure 2-8,

l PE1 and PE2 are located in the MPLS backbone network.

l CE1 is connected to PE1 through Switch A.

l CE2 is connected to PE2 directly.

l CE1 and CE2 belong to the same VPN.

CE1 and CE2 are required to interwork with each other.

Figure 2-8 Networking diagram in which CEs access a VPN through the GRE tunnel of the

public network

Tunnel

PC1 PC1

GE1/0/0

GE2/0/0

CE1 CE2

PE1

PE2

Tunnel1/0/0

Tunnel2/0/0

SwitchA

Loopback1

Device

Interface VLANIF interface IP address

CE1 GigabitEthernet1/0/0 VLANIF 10 21.1.1.2/24

Quidway S7700 Smart Routing Switch

Configuration Guide - VPN 2 GRE Configuration

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

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