现在的IP网络的问题已经暴露的很多了，各种改进的网络架构与设想非常多，但其中以基于内容为中心的网络发展最为迅速，其中，NDN的架构最为完整，代码也比较成熟。OSPFN是基于CCNX的，所以之前要安装CCNX，简单的./configure make make install 就可以安装完成，自带很多例子可以跑跑。接下来安装OSPFN，由于还要配置，所以把过程记录在下面。
1.OSPFN安装
首先新建一个用户，并在/usr/local/etc下建两个目录：
$ sudo useradd quagga $ cd /usr/local/etc/ $ sudo mkdir quagga $ sudo chown quagga:quagga quagga $ sudo chmod 775 quagga $ sudo mkdir quagga-state $ sudo chown quagga:quagga quagga-state $ sudo chmod 775 quagga-state
之后，运行./configure，这里要注意，ubuntu12.04下，/var/run路径每次重启里面新建的quagga-state文件夹会消失，费了好长时间才发现这个问题，修改的./configure如下：
./configure --enable-opaque-lsa --disable-ipv6 --disable-ripd --disable-ripngd --disable-ospf6d --disable-bgpd --disable-bgp-announce --sysconfdir=/usr/local/etc/quagga --localstatedir=/usr/local/etc/quagga-state
然后，执行make 和install：
make make install
至此，OSPFN安装完毕。
2.OSPFN配置
首先要得到GRE隧道的IP，由于没有加入到他们的testbed中，所以自己设置一个就好了。
Public IP: 141.225.11.150 Public IP:150.135.82.77 ________________________ 10.0.1.10 10.0.1.9 ___________________ |netlogic.cs.memphis.edu |___________________|hobo.cs.arizona.edu| ------------------------ -------------------
上图是官网配的图，NDN testbed使用的是10.x.x.x的私有IP地址，因为没有加入进去，所以就还使用它们就好了。Public IP就是本机的IP，由于本地路由器，IP也是10.x.x.x的。。。但还是可以区分出来的~
sudo modprobe ip_gre
之后，在/etc/network/interfaces文件中添加如下：
auto lo iface lo inet loopback auto netlogic iface netlogic inet static address 10.0.1.9 netmask 255.255.255.0 broadcast 10.0.1.255 up ifconfig netlogic multicast pre-up iptunnel add netlogic mode gre local 10.0.0.104 remote 10.0.0.108 ttl 255 pointopoint 10.0.1.10 post-down iptunnel del netlogic
这里，本机IP是10.0.0.104，另一台机子IP是10.0.0.108，相应的两个隧道IP是10.0.1.9和10.0.1.10。现在ifconfig一下：
lo Link encap:本地环回
inet 地址:127.0.0.1 掩码:255.0.0.0
inet6 地址: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 跃点数:1
接收数据包:134812 错误:0 丢弃:0 过载:0 帧数:0
发送数据包:134812 错误:0 丢弃:0 过载:0 载波:0
碰撞:0 发送队列长度:0
接收字节:7722612 (7.7 MB) 发送字节:7722612 (7.7 MB)
netlogic Link encap:未指定 硬件地址 C0-A8-00-66-30-30-30-30-00-00-00-00-00-00-00-00
inet 地址:10.0.0.10 点对点:10.0.0.9 掩码:255.255.255.255
inet6 地址: fe80::5efe:c0a8:66/64 Scope:Link
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1476 跃点数:1
接收数据包:0 错误:0 丢弃:0 过载:0 帧数:0
发送数据包:0 错误:20 丢弃:0 过载:0 载波:20
碰撞:0 发送队列长度:0
接收字节:0 (0.0 B) 发送字节:0 (0.0 B)
wlan0 Link encap:以太网 硬件地址 00:1f:3a:28:df:41
inet 地址:10.0.0.104 广播:10.0.0.255 掩码:255.255.255.0
inet6 地址: fe80::21f:3aff:fe28:df41/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 跃点数:1
接收数据包:715225 错误:0 丢弃:0 过载:0 帧数:0
发送数据包:474374 错误:0 丢弃:0 过载:0 载波:0
碰撞:0 发送队列长度:1000
接收字节:785890455 (785.8 MB) 发送字节:60896981 (60.8 MB)
发现有了netlogic。然后配置ospfd.conf文件。内容如下：
hostname netlogic_kl password pwd enable password pwd log file /var/log/quagga/ospfd.log ! ! ! interface netlogic description link to netlogic_zero ! access-list ospfn permit 10.0.0.0/8 access-list ospfn deny any ! router ospf ospf router-id 10.0.0.104 redistribute connected distribute-list ospfn out connected network 10.0.1.8/30 area 0.0.0.0 capability opaque ! line vty ! !end of configuration file hereog stdout
这个基本上就是官方文档的例子，只是把IP给改成相应的IP。
最后就是最关键的ospfn.conf文件。这个官网的说明文档中没有详细说明，我就把它放在/usr/local/etc/quagga目录下，经测试完全可用。目前OSPFN支持两个命令：ccnname和logdir。说明如下：
1. ccnname name_prefix op_id name_prefix : a name prefix, in URI format, to be advertised by this router. op_id : the desired ID for this name LSA. The op_id must be unique among the name prefixes advertised by the same router. 2. logdir dir dir : directory to write log files to
我的ospfn.conf内容如下：
ccnname /ndn/ustc.edu/1318/ 1 ccnname /ndn/ustc.edu/1316/ 2 logdir /usr/local/etc/
最后，开启应用：
$ sudo zebra -d
$ sudo ospfd -d -a
$ ccndstart
$ ospfn
截图如下：
在/usr/local/etc里生成了log，log内容如下：
20130814220419:Connecting to OSPF daemon ............ 20130814220419:Connection to OSPF established. 20130814220419:ccnname /ndn/ustc.edu/1318/ 1 20130814220419: OpaqueData:19/ndn/ustc.edu/1318/||| 20130814220419:Originating/updating LSA with counter=0... 20130814220419:done, return code is -7 20130814220419:ccnname /ndn/ustc.edu/1316/ 2 20130814220419: OpaqueData:19/ndn/ustc.edu/1316/||| 20130814220419:Originating/updating LSA with counter=1... 20130814220419:done, return code is -7 20130814220419:logdir /usr/local/etc/ 20130814220419:lsa_read called 20130814220419:lsa_update_callback: 20130814220419:ifaddr: 0.0.0.0 20130814220419:area: 0.0.0.0 20130814220419:is_self_origin: 1 20130814220419: LSA Header 20130814220419: LS age 0 20130814220419: Options 2 (*|-|-|-|-|-|E|*) 20130814220419: LS type 1 (router-LSA) 20130814220419: Link State ID 10.0.0.104 20130814220419: Advertising Router 10.0.0.104 20130814220419: LS sequence number 0x80000001 20130814220419: LS checksum 0xd577 20130814220419: length 36 20130814220419: Router-LSA 20130814220419: # links 1 20130814220419: Link ID 10.0.1.10 20130814220419: Link Data 255.255.255.255 20130814220419: Type 3 20130814220419: TOS 0 20130814220419: metric 10 20130814220419:lsa_read called 20130814220419:lsa_update_callback: 20130814220419:ifaddr: 0.0.0.0 20130814220419:area: 0.0.0.0 20130814220419:is_self_origin: 1 20130814220419: LSA Header 20130814220419: LS age 0 20130814220419: Options 2 (*|-|-|-|-|-|E|*) 20130814220419: LS type 5 (AS-external-LSA) 20130814220419: Link State ID 10.0.0.0 20130814220419: Advertising Router 10.0.0.104 20130814220419: LS sequence number 0x80000002 20130814220419: LS checksum 0x5ae6 20130814220419: length 36 20130814220419:lsa_read called 20130814220419:lsa_update_callback: 20130814220419:ifaddr: 0.0.0.0 20130814220419:area: 0.0.0.0 20130814220419:is_self_origin: 1 20130814220419: LSA Header 20130814220419: LS age 0 20130814220419: Options 2 (*|-|-|-|-|-|E|*) 20130814220419: LS type 5 (AS-external-LSA) 20130814220419: Link State ID 10.0.1.10 20130814220419: Advertising Router 10.0.0.104 20130814220419: LS sequence number 0x80000002 20130814220419: LS checksum 0xea4b 20130814220419: length 36
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