EVEngL2TP配置

在EVEng中配置L2TP需要进行以下步骤：

1. 创建虚拟模板接口：interface Virtual-Template1

2. 配置虚拟模板接口的协议和IP地址：ip unnumbered <interface>，ip mtu 1400，peer default ip address pool pool1，no keepalive

3. 配置L2TP协议：l2tp-class l2tp_class，authentication password <password>，tunnel password <password>，tunnel timeout 60，default local interface Virtual-Template1

4. 配置L2TP隧道：interface <interface>，ip address <IP address> <subnet mask>，no shutdown，ip pmtu，ip ospf network point-to-point，ip ospf authentication-key <password>，tunnel source <source IP>，tunnel mode l2tpv3，tunnel protection ipsec profile <profile name>，tunnel destination <destination IP>

5. 配置IPSec：crypto isakmp policy 10，encr aes，hash sha256，authentication pre-share，group 14，lifetime 86400，crypto isakmp key <pre-shared key> address <destination IP>，crypto ipsec transform-set myset esp-aes esp-sha256-hmac，crypto ipsec profile myprofile，set security-association lifetime seconds 86400，set transform-set myset，set pfs group14，set ikev2-profile l2tp-profile

6. 配置IP地址池：ip local pool pool1 <start IP> <end IP>

以上是基本的L2TP配置步骤，具体配置需要根据实际需求进行调整。