mGRE-GRE作业

本文详细介绍了如何在路由器上进行基础IP配置,包括设置本地用户认证、PPP协议的chap模式,以及配置RIP路由协议。还涉及了环回功能和启用DHCP服务。

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要求:

按要求配置拓扑图:

基础ip配置:

配置认证

[r5]aaa
[r5]local-user lkl passwd cipher 123456
[r5]local-user lkl service-type ppp
[r5]int serial 3/0/1
[r5]ppp authentication-mode chap
[r5]ip add 25.1.1.2 24

[r3]ip route-static 0.0.0.0 0 35.1.1.2
[r2]ip route-static 0.0.0.0 0 25.1.1.2
[r1]ip route-static 0.0.0.0 0 15.1.1.2

HDLC:

RIP

r3,r4同理

环回

开启电脑dhco

完成

### OSPF Point-to-Multipoint Configuration with MGRE Tunneling Explanation and Setup Guide #### Understanding the Basics of OSPF Point-to-Multipoint Networks In a point-to-multipoint network type within OSPF, routers do not elect Designated Routers (DRs) or Backup Designated Routers (BDRs). Neighbors are established directly between endpoints. The default Hello interval is set to 30 seconds while the Dead interval stands at 120 seconds[^1]. This configuration simplifies neighbor establishment but requires careful planning when integrating advanced features like Multi-Point GRE tunnels. #### Introduction to Multi-Point GRE Tunnels Multi-Point GRE (mGRE) allows multiple remote sites to connect through a single virtual interface on an endpoint device without requiring individual physical interfaces for each connection. mGRE can significantly reduce complexity in hub-and-spoke topologies by enabling dynamic tunnel creation based on IPsec policies or other criteria. #### Combining OSPF Point-to-Multipoint Network Type with mGRE When combining these two technologies: - **Hub Router**: Configured as both ends of all spokes' mGRE sessions. - **Spoke Routers**: Each configured individually pointing back towards the central hub router's public address over which they will establish their respective mGRE session(s). The combination leverages OSPF’s ability to form adjacencies easily across non-broadcast multi-access networks such as those created via mGRE tunnels. It also benefits from OSPF's inherent support for point-to-multipoint configurations where DR/BDR elections aren't necessary due to direct adjacency formation among participating nodes. #### Example Configuration Steps for Hub Router Using Huawei CLI Syntax Below demonstrates how one might configure this scenario using commands similar to what would be found in a typical enterprise-grade environment provided by vendors like Huawei. ```shell # Enter system view mode system-view # Create loopback interface used for establishing mGRE connections interface LoopBack0 ip address 192.168.1.1 255.255.255.255 # Configure real Ethernet port that connects outside world interface GigabitEthernet0/0/1 ip address dhcp # Define mGRE template tunnel-template gre multipoint name mgre-tpl source-interface LoopBack0 destination any # Apply mGRE settings onto actual tunnel interface interface Tunnel0 undo ip address tunnel-protocol gre multipoint apply tunnel-template mgre-tpl ospf enable area 0 ``` For spoke routers, replace `source-interface` command under `tunnel-template` section accordingly depending upon local addressing scheme; ensure consistency throughout entire deployment regarding naming conventions applied here too. #### Verification Commands After Setup Completion Once completed successfully, verify operation status utilizing following instructions available inside most modern networking gear including models produced by companies mentioned earlier: ```shell display ospf peer brief # Check current state of OSPF peers display ip routing-table # Review learned routes after convergence has occurred ping -a <Source_IP> <Destination_IP> # Test reachability between different segments involved ``` --related questions-- 1. How does changing OSPF hello/dead timers affect stability in large-scale deployments? 2. What considerations should administrators take into account before implementing mGRE solutions? 3. Can you explain more about configuring OSPF route-id specifically for devices running OSPF protocol? 4. In what scenarios could deploying OSPF stub areas improve performance compared against standard ones?
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