sy
System View: return to User View with Ctrl+Z.
DOWN
状态
[r3]ospf
[r3-ospf-1]a 0
[r3-ospf-1-area-0.0.0.0]net 11.0.0[1D [1D[1D [1D[1D [1D1.1.0 0.0.0.255
*0.5648030 r3 RM/7/RTDBG:OSPF Process 1
*0.5648030 r3 RM/7/RTDBG:OSPF SENT 11.1.1.2(Ethernet0/0) -> 224.0.0.5 Hello Vers: 2 Len: 44
*0.5648030 r3 RM/7/RTDBG:OSPF SENT RouterID: 1.1.1.1 Area: 0.0.0.0 Checksum: 0xfa9c
*0.5648031 r3 RM/7/RTDBG:OSPF SENT Auth: Type: 0 Key: 00000000.00000000
OSPF
头
*0.5648031 r3 RM/7/RTDBG:OSPF SENT Netmask: 255.255.255.0 Hello Int: 10 Options: <Externals>
*0.5648031 r3 RM/7/RTDBG:OSPF SENT Pri: 1 DeadInt: 40 DR: 0.0.0.0 BDR: 0.0.0.0
hello
报文
*0.5648031 r3 RM/7/RTDBG:OSPF Process 1
*0.5648032 r3 RM/7/RTDBG:OSPF SENT 11.1.1.2(Ethernet0/0) -> 224.0.0.5 Hello Vers: 2 Len: 44
*0.5648032 r3 RM/7/RTDBG:OSPF SENT RouterID: 1.1.1.1 Area: 0.0.0.0 Checksum: 0xfa9c
*0.5648032 r3 RM/7/RTDBG:OSPF SENT Auth: Type: 0 Key: 00000000.00000000
[r3-ospf-1-area-0.0.0.0]
*0.5648090 r3 RM/7/RTDBG:OSPF SENT Netmask: 255.255.255.0 Hello Int: 10 Options: <Externals>
*0.5648290 r3 RM/7/RTDBG:OSPF SENT Pri: 1 DeadInt: 40 DR: 0.0.0.0 BDR: 0.0.0.0
以上两个报文是
Ospf
初始状态。当
R2
收到这个
hello
报文之后立即进入
one-way
状态,因为
R2
在
R1
的
hello
报文里没有看到它自己《
RID
》,所以他它向
R1
回复
hello
报文并携带自己的信息
。
*0.5648440 r3 RM/7/RTDBG:OSPF Process 1
*0.5648590 r3 RM/7/RTDBG:OSPF RECV 11.1.1.1(Ethernet0/0) -> 224.0.0.5 Hello Vers: 2 Len: 48
*0.5648640 r3 RM/7/RTDBG:OSPF RECV RouterID: 2.2.2.2 Area: 0.0.0.0 Checksum: 0xea92
*0.5648690 r3 RM/7/RTDBG:OSPF RECV Auth: Type: 0 Key: 00000000.00000000
OSPF
头
*0.5648790 r3 RM/7/RTDBG:OSPF RECV Netmask: 255.255.255.0 Hello Int: 10 Options: <Externals>
*0.5648790 r3 RM/7/RTDBG:OSPF RECV Pri: 1 DeadInt: 40 DR: 11.1.1.1 BDR: 0.0.0.0
*0.5648890 r3 RM/7/RTDBG:OSPF RECV Attached routers: 1.1.1.1
hello
报文
这个报文表示
R1
在收到
R2
的
hello
报文之后立即进入
two-way
状态,这个
hello
分组说明
R2
已经看见
R1
的
hello
分组。
R2
的路由器
ID
要大一些,所以他就选择自己做
DR
。
*0.5648890 r3 RM/7/RTDBG:OSPF Process 1
*0.5649050 r3 RM/7/RTDBG:OSPF SENT 11.1.1.2(Ethernet0/0) -> 11.1.1.1 Database Description Vers: 2 Len: 32
*0.5649150 r3 RM/7/RTDBG:OSPF SENT RouterID: 1.1.1.1 Area: 0.0.0.0 Checksum: 0xe3c4
*0.5649200 r3 RM/7/RTDBG:OSPF SENT Auth: Type: 0 Key: 00000000.00000000
OSPF
头
*0.5649300 r3 RM/7/RTDBG:OSPF SENT Flags <I M MS>OSPF SENT Options: <Externals> seq: 1610
DD
报文
*0.5649400 r3 RM/7/RTDBG:OSPF Process 1
*0.5649450 r3 RM/7/RTDBG:OSPF RECV 11.1.1.1(Ethernet0/0) -> 11.1.1.2 Database Description Vers: 2 Len: 32
*0.5649550 r3 RM/7/RTDBG:OSPF RECV RouterID: 2.2.2.2 Area: 0.0.0.0 Checksum: 0xee89
*0.5649650 r3 RM/7/RTDBG:OSPF RECV Auth: Type: 0 Key: 00000000.00000000
OSPF
头
*0.5649650 r3 RM/7/RTDBG:OSPF RECV Flags <I M MS>OSPF RECV Options: <Externals> seq: 949
DD
报文
*0.5649800 r3 RM/7/RTDBG:OSPF Process 1
*0.5649910 r3 RM/7/RTDBG:OSPF SENT 11.1.1.2(Ethernet0/0) -> 11.1.1.1 Database Description Vers: 2 Len: 52
*0.5650010 r3 RM/7/RTDBG:OSPF SENT RouterID: 1.1.1.1 Area: 0.0.0.0 Checksum: 0x225f
*0.5650060 r3 RM/7/RTDBG:OSPF SENT Auth: Type: 0 Key: 00000000.00000000
OSPF
头
*0.5650160 r3 RM/7/RTDBG:OSPF SENT Flags <>OSPF SENT Options: <Externals> seq: 949
*0.5650210 r3 RM/7/RTDBG:OSPF SENT Router Id: 1.1.1.1 AdvRtr: 1.1.1.1 Age: 0
*0.5650310 r3 RM/7/RTDBG:OSPF SENT Len: 36 Seq #: 80000002 Checksum: 0x29f4
*0.5650410 r3 RM/7/RTDBG:OSPF SENT Options:(DC)
携带
LSA
头的
DD
报文
以上三个报文,是
OSPF
的
exstart
状态的建立以及到
exchange
状态的过渡。在这个过程中,前两个
DD
报文不携带
LSA
头,只有序列号,在模仿了
TCP
的三次握手之后,选举出主从设备,有着最大
RID
的路由器将会成为主设备。在最后一个
DD
报文中,它携带了
LSA
头,从
exstart
状态过渡到
exchange
状态。
*0.5650510 r3 RM/7/RTDBG:OSPF Process 1
*0.5650610 r3 RM/7/RTDBG:OSPF RECV 11.1.1.1(Ethernet0/0) -> 11.1.1.2 Database Description Vers: 2 Len: 32
*0.5650660 r3 RM/7/RTDBG:OSPF RECV RouterID: 2.2.2.2 Area: 0.0.0.0 Checksum: 0xee89
*0.5650770 r3 RM/7/RTDBG:OSPF RECV Auth: Type: 0 Key: 00000000.00000000
OSPF
头
*0.5650820 r3 RM/7/RTDBG:OSPF RECV Flags <I M MS>OSPF RECV Options: <Externals> seq: 949
DD
报文
这个报文时主设备给
R1
的
DD
报文的一个确认。
*0.5650920 r3 RM/7/RTDBG:OSPF Process 1
*0.5651020 r3 RM/7/RTDBG:OSPF SENT 11.1.1.2(Ethernet0/0) -> 11.1.1.1 Database Description Vers: 2 Len: 52
*0.5651120 r3 RM/7/RTDBG:OSPF SENT RouterID: 1.1.1.1 Area: 0.0.0.0 Checksum: 0x225f
*0.5651220 r3 RM/7/RTDBG:OSPF SENT Auth: Type: 0 Key: 00000000.00000000
OSPF
头
*0.5651220 r3 RM/7/RTDBG:OSPF SENT Flags <>OSPF SENT Options: <Externals> seq: 949
*0.5651320 r3 RM/7/RTDBG:OSPF SENT Router Id: 1.1.1.1 AdvRtr: 1.1.1.1 Age: 0
*0.5651420 r3 RM/7/RTDBG:OSPF SENT Len: 36 Seq #: 80000002 Checksum: 0x29f4
*0.5651520 r3 RM/7/RTDBG:OSPF SENT Options:(DC)
携带
LSA
头的
DD
报文
*0.5651580 r3 RM/7/RTDBG:OSPF Process 1
*0.5651680 r3 RM/7/RTDBG:OSPF RECV 11.1.1.1(Ethernet0/0) -> 11.1.1.2 Database Description Vers: 2 Len: 52
*0.5651730 r3 RM/7/RTDBG:OSPF RECV RouterID: 2.2.2.2 Area: 0.0.0.0 Checksum: 0x6de3
*0.5651830 r3 RM/7/RTDBG:OSPF RECV Auth: Type: 0 Key: 00000000.00000000
OSPF
头
*0.5651930 r3 RM/7/RTDBG:OSPF RECV Flags <MS>OSPF RECV Options: <Externals> seq: 94a
*0.5652030 r3 RM/7/RTDBG:OSPF RECV Router Id: 2.2.2.2 AdvRtr: 2.2.2.2 Age: 42
*0.5652080 r3 RM/7/RTDBG:OSPF RECV Len: 36 Seq #: 80000004 Checksum: 0xd83b
*0.5652180 r3 RM/7/RTDBG:OSPF RECV Options:(DC)
携带
LSA
头的
DD
报文
*0.5652280 r3 RM/7/RTDBG:OSPF Process 1
*0.5652280 r3 RM/7/RTDBG:OSPF SENT 11.1.1.2(Ethernet0/0) -> 11.1.1.1 Database Description Vers: 2 Len: 32
*0.5652390 r3 RM/7/RTDBG:OSPF SENT RouterID: 1.1.1.1 Area: 0.0.0.0 Checksum: 0xf091
*0.5652490 r3 RM/7/RTDBG:OSPF SENT Auth: Type: 0 Key: 00000000.00000000
OSPF
头
*0.5652590 r3 RM/7/RTDBG:OSPF SENT Flags <>OSPF SENT Options: <Externals> seq: 94a
DD
报文
以上的报文就是
OSPF exchange
状态的过程,在交换状态中,路由器通过
DBD
分组描述它的整个链路状态数据库,每个
DBD
序列号都被明白的确认。当
DD
报文里面的
M
比特被设置为
0
的时候,这表示设备没有更多的数据要传送了,这是所有路由器交换完数据库的一个标志。
*0.5652640 r3 RM/7/RTDBG:OSPF Process 1
*0.5652740 r3 RM/7/RTDBG:OSPF SENT 11.1.1.2(Ethernet0/0) -> 11.1.1.1 Link State Request Vers: 2 Len: 36
*0.5652840 r3 RM/7/RTDBG:OSPF SENT RouterID: 1.1.1.1 Area: 0.0.0.0 Checksum: 0xf3cd
*0.5652940 r3 RM/7/RTDBG:OSPF SENT Auth: Type: 0 Key: 00000000.00000000
OSPF
头
*0.5652941 r3 RM/7/RTDBG:OSPF SENT Router Id: 2.2.2.2 AdvRtr: 2.2.2.2
LSR
报文
*0.5653043 r3 RM/7/RTDBG:OSPF Process 1
*0.5653140 r3 RM/7/RTDBG:OSPF RECV 11.1.1.1(Ethernet0/0) -> 11.1.1.2 Link State Request Vers: 2 Len: 36
*0.5653250 r3 RM/7/RTDBG:OSPF RECV RouterID: 2.2.2.2 Area: 0.0.0.0 Checksum: 0xf5cf
*0.5653350 r3 RM/7/RTDBG:OSPF RECV Auth: Type: 0 Key: 00000000.00000000
OSPF
头
*0.5653400 r3 RM/7/RTDBG:OSPF RECV Router Id: 1.1.1.1 AdvRtr: 1.1.1.1
LSR
报文
*0.5653500 r3 RM/7/RTDBG:OSPF Process 1
*0.5653600 r3 RM/7/RTDBG:OSPF SENT 11.1.1.2(Ethernet0/0) -> 11.1.1.1 Link State Update Vers: 2 Len: 64
*0.5653650 r3 RM/7/RTDBG:OSPF SENT RouterID: 1.1.1.1 Area: 0.0.0.0 Checksum: 0x1f94
*0.5653750 r3 RM/7/RTDBG:OSPF SENT Auth: Type: 0 Key: 00000000.00000000
*0.5653850 r3 RM/7/RTDBG:OSPF SENT Advertisement count: 1
*0.5653900 r3 RM/7/RTDBG:OSPF SENT Router Id: 1.1.1.1 AdvRtr: 1.1.1.1 Age: 1
*0.5654000 r3 RM/7/RTDBG:OSPF SENT Len: 36 Seq #: 80000002 Checksum: 0x29f4
*0.5654110 r3 RM/7/RTDBG:OSPF SENT Options:(DC)
*0.5654160 r3 RM/7/RTDBG:OSPF SENT StubNet ID: 11.1.1.0 Data: 255.255.255.0 metric: 1
*0.5654260 r3 RM/7/RTDBG:OSPF Process 1
*0.5654310 r3 RM/7/RTDBG:OSPF RECV 11.1.1.1(Ethernet0/0) -> 11.1.1.2 Link State Update Vers: 2 Len: 64
*0.5654410 r3 RM/7/RTDBG:OSPF RECV RouterID: 2.2.2.2 Area: 0.0.0.0 Checksum: 0x6b1a
*0.5654510 r3 RM/7/RTDBG:OSPF RECV Auth: Type: 0 Key: 00000000.00000000
*0.5654560 r3 RM/7/RTDBG:OSPF RECV Advertisement count: 1
*0.5654660 r3 RM/7/RTDBG:OSPF RECV Router Id: 2.2.2.2 AdvRtr: 2.2.2.2 Age: 43
*0.5654760 r3 RM/7/RTDBG:OSPF RECV Len: 36 Seq #: 80000004 Checksum: 0xd83b
*0.5654810 r3 RM/7/RTDBG:OSPF RECV Options:(DC)
*0.5654920 r3 RM/7/RTDBG:OSPF RECV StubNet ID: 11.1.1.0 Data: 255.255.255.0 metric: 1
*0.5654970 r3 RM/7/RTDBG:OSPF Process 1
*0.5655070 r3 RM/7/RTDBG:OSPF RECV 11.1.1.1(Ethernet0/0) -> 224.0.0.5 Link State Update Vers: 2 Len: 96
*0.5655170 r3 RM/7/RTDBG:OSPF RECV RouterID: 2.2.2.2 Area: 0.0.0.0 Checksum: 0xc7c5
*0.5655220 r3 RM/7/RTDBG:OSPF RECV Auth: Type: 0 Key: 00000000.00000000
*0.5655320 r3 RM/7/RTDBG:OSPF RECV Advertisement count: 2
*0.5655370 r3 RM/7/RTDBG:OSPF RECV Router Id: 2.2.2.2 AdvRtr: 2.2.2.2 Age: 1
*0.5655470 r3 RM/7/RTDBG:OSPF RECV Len: 36 Seq #: 80000005 Checksum: 0x7292
*0.5655570 r3 RM/7/RTDBG:OSPF RECV Options:(DC)
*0.5655620 r3 RM/7/RTDBG:OSPF RECV TransNet ID: 11.1.1.1 Data: 11.1.1.1 metric: 1
*0.5655730 r3 RM/7/RTDBG:OSPF RECV Net Id: 11.1.1.1 AdvRtr: 2.2.2.2 Age: 1
*0.5655780 r3 RM/7/RTDBG:OSPF RECV Len: 32 Seq #: 80000001 Checksum: 0x47d2
*0.5655880 r3 RM/7/RTDBG:OSPF RECV Options:(DC)
*0.5655980 r3 RM/7/RTDBG:OSPF RECV Mask: 255.255.255.0
*0.5656030 r3 RM/7/RTDBG:OSPF RECV Attached router: 2.2.2.2
*0.5656130 r3 RM/7/RTDBG:OSPF RECV Attached router: 1.1.1.1
*0.5656230 r3 RM/7/RTDBG:OSPF Process 1
*0.5656280 r3 RM/7/RTDBG:OSPF SENT 11.1.1.2(Ethernet0/0) -> 224.0.0.5 Link State Ack Vers: 2 Len: 64
*0.5656380 r3 RM/7/RTDBG:OSPF SENT RouterID: 1.1.1.1 Area: 0.0.0.0 Checksum: 0x8323
*0.5656480 r3 RM/7/RTDBG:OSPF SENT Auth: Type: 0 Key: 00000000.00000000
*0.5656540 r3 RM/7/RTDBG:OSPF SENT Net Id: 11.1.1.1 AdvRtr: 2.2.2.2 Age: 1
*0.5656640 r3 RM/7/RTDBG:OSPF SENT Len: 32 Seq #: 80000001 Checksum: 0x47d2
*0.5656641 r3 RM/7/RTDBG:OSPF SENT Options:(DC)
*0.5656740 r3 RM/7/RTDBG:OSPF SENT Router Id: 2.2.2.2 AdvRtr: 2.2.2.2 Age: 43
*0.5656741 r3 RM/7/RTDBG:OSPF SENT Len: 36 Seq #: 80000004 Checksum: 0xd83b
*0.5656890 r3 RM/7/RTDBG:OSPF SENT Options:(DC)
*0.5656940 r3 RM/7/RTDBG:OSPF Process 1
*0.5657040 r3 RM/7/RTDBG:OSPF RECV 11.1.1.1(Ethernet0/0) -> 224.0.0.5 Link State Ack Vers: 2 Len: 44
*0.5657140 r3 RM/7/RTDBG:OSPF RECV RouterID: 2.2.2.2 Area: 0.0.0.0 Checksum: 0x2baa
*0.5657190 r3 RM/7/RTDBG:OSPF RECV Auth: Type: 0 Key: 00000000.00000000
*0.5657300 r3 RM/7/RTDBG:OSPF RECV Router Id: 1.1.1.1 AdvRtr: 1.1.1.1 Age: 1
*0.5657400 r3 RM/7/RTDBG:OSPF RECV Len: 36 Seq #: 80000002 Checksum: 0x29f4
*0.5657450 r3 RM/7/RTDBG:OSPF RECV Options:(DC)
*0.5657550 r3 RM/7/RTDBG:OSPF Process 1
*0.5657650 r3 RM/7/RTDBG:OSPF SENT 11.1.1.2(Ethernet0/0) -> 224.0.0.5 Link State Update Vers: 2 Len: 64
*0.5657650 r3 RM/7/RTDBG:OSPF SENT RouterID: 1.1.1.1 Area: 0.0.0.0 Checksum: 0x6d46
*0.5657750 r3 RM/7/RTDBG:OSPF SENT Auth: Type: 0 Key: 00000000.00000000
*0.5657850 r3 RM/7/RTDBG:OSPF SENT Advertisement count: 1
*0.5657900 r3 RM/7/RTDBG:OSPF SENT Router Id: 1.1.1.1 AdvRtr: 1.1.1.1 Age: 1
*0.5658000 r3 RM/7/RTDBG:OSPF SENT Len: 36 Seq #: 80000003 Checksum: 0xd03d
*0.5658110 r3 RM/7/RTDBG:OSPF SENT Options:(DC)
*0.5658210 r3 RM/7/RTDBG:OSPF SENT TransNet ID: 11.1.1.1 Data: 11.1.1.2 metric: 1
*0.5658211 r3 RM/7/RTDBG:OSPF Process 1
*0.5658310 r3 RM/7/RTDBG:OSPF RECV 11.1.1.1(Ethernet0/0) -> 11.1.1.2 Link State Update Vers: 2 Len: 64
*0.5658410 r3 RM/7/RTDBG:OSPF RECV RouterID: 2.2.2.2 Area: 0.0.0.0 Checksum: 0xc4e5
*0.5658510 r3 RM/7/RTDBG:OSPF RECV Auth: Type: 0 Key: 00000000.00000000
*0.5658560 r3 RM/7/RTDBG:OSPF RECV Advertisement count: 1
*0.5658610 r3 RM/7/RTDBG:OSPF RECV Router Id: 2.2.2.2 AdvRtr: 2.2.2.2 Age: 6
*0.5658710 r3 RM/7/RTDBG:OSPF RECV Len: 36 Seq #: 80000005 Checksum: 0x7292
*0.5658810 r3 RM/7/RTDBG:OSPF RECV Options:(DC)
*0.5658870 r3 RM/7/RTDBG:OSPF RECV TransNet ID: 11.1.1.1 Data: 11.1.1.1 metric: 1
*0.5658970 r3 RM/7/RTDBG:OSPF Process 1
*0.5659020 r3 RM/7/RTDBG:OSPF RECV 11.1.1.1(Ethernet0/0) -> 224.0.0.5 Link State Ack Vers: 2 Len: 44
*0.5659120 r3 RM/7/RTDBG:OSPF RECV RouterID: 2.2.2.2 Area: 0.0.0.0 Checksum: 0x855f
*0.5659220 r3 RM/7/RTDBG:OSPF RECV Auth: Type: 0 Key: 00000000.00000000
*0.5659320 r3 RM/7/RTDBG:OSPF RECV Router Id: 1.1.1.1 AdvRtr: 1.1.1.1 Age: 1
*0.5659370 r3 RM/7/RTDBG:OSPF RECV Len: 36 Seq #: 80000003 Checksum: 0xd03d
*0.5659470 r3 RM/7/RTDBG:OSPF RECV Options:(DC)
*0.5659570 r3 RM/7/RTDBG:OSPF Process 1
*0.5659620 r3 RM/7/RTDBG:OSPF SENT 11.1.1.2(Ethernet0/0) -> 224.0.0.5 Link State Ack Vers: 2 Len: 44
*0.5659730 r3 RM/7/RTDBG:OSPF SENT RouterID: 1.1.1.1 Area: 0.0.0.0 Checksum: 0xe101
*0.5659780 r3 RM/7/RTDBG:OSPF SENT Auth: Type: 0 Key: 00000000.00000000
*0.5659880 r3 RM/7/RTDBG:OSPF SENT Router Id: 2.2.2.2 AdvRtr: 2.2.2.2 Age: 6
*0.5659930 r3 RM/7/RTDBG:OSPF SENT Len: 36 Seq #: 80000005 Checksum: 0x7292
*0.5660030 r3 RM/7/RTDBG:OSPF SENT Options:(DC)
以上这些报文时
OSPF
的
loading
状态,在这个状态里完成了三种
OSPF
报文类型的交互。分别是
LSR,LSU,LSAck
。
然而
LSR,
的报文都是通过单播发送的,LSU即有单播发送又有组播发送。只有
LSAck
的报文时通过组播发送的。在
LSU
的更新报文里面看到了两种
LSA
的类型,即一类
LSA,
和二类
LSA
。而
LOADING
状态完成的同时,也就进入了
OSPF
的
full
状态。即全部完成了
OSPF
的七种状态。
*0.5660130 r3 RM/7/RTDBG:OSPF Process 1
*0.5660230 r3 RM/7/RTDBG:OSPF SENT 11.1.1.2(Ethernet0/0) -> 224.0.0.5 Hello Vers: 2 Len: 48
*0.5660230 r3 RM/7/RTDBG:OSPF SENT RouterID: 1.1.1.1 Area: 0.0.0.0 Checksum: 0xde8f
*0.5660330 r3 RM/7/RTDBG:OSPF SENT Auth: Type: 0 Key: 00000000.00000000
*0.5660430 r3 RM/7/RTDBG:OSPF SENT Netmask: 255.255.255.0 Hello Int: 10 Options: <Externals>
*0.5660540 r3 RM/7/RTDBG:OSPF SENT Pri: 1 DeadInt: 40 DR: 11.1.1.1 BDR: 11.1.1.2
*0.5660590 r3 RM/7/RTDBG:OSPF SENT Attached routers: 2.2.2.2
*0.5660690 r3 RM/7/RTDBG:OSPF Process 1
*0.5660790 r3 RM/7/RTDBG:OSPF RECV 11.1.1.1(Ethernet0/0) -> 224.0.0.5 Hello Vers: 2 Len: 48
*0.5660790 r3 RM/7/RTDBG:OSPF RECV RouterID: 2.2.2.2 Area: 0.0.0.0 Checksum: 0xde8f
*0.5660890 r3 RM/7/RTDBG:OSPF RECV Auth: Type: 0 Key: 00000000.00000000
*0.5660990 r3 RM/7/RTDBG:OSPF RECV Netmask: 255.255.255.0 Hello Int: 10 Options: <Externals>
*0.5661040 r3 RM/7/RTDBG:OSPF RECV Pri: 1 DeadInt: 40 DR: 11.1.1.1 BDR: 11.1.1.2
*0.5661140 r3 RM/7/RTDBG:OSPF RECV Attached routers: 1.1.1.1
在完成七种状态之后,路由器之间只发送
HELLO
报文来维持邻居关系。
2009.3.27
1
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31