ISIS实验配置
ISIS：主要用于运营商的内部网络ISIS特点：
①IS指路由器②ISIS属于大型内部网关路由协议类似OSPF，多用于运营商，企业网很少使用③使用SPF算法，链路状态类路由协议④ISIS封装数据包是基于OSI模型，OSPF、RIP、以及常见的以太网数据包封装都是基于TCP/IP模型⑤ISIS划分区域是基于路由器。即一个路由器只能属于一个区域⑥ISIS也是两层架构（骨干区域、常规区域）
ISIS路由器的种类：
①Level 1 路由器：仅收发L1的isis报文②Level 2 路由器：仅收发L2的isis报文③Level 1 2 路由器：可以收发L1和L2的isis报文
骨干区域
连续一片Level 2路由器（包含L 1 2）的集合
注意：
①默认情况下所有运行ISIS的路由器都是Level 1 2路由器②L 1 2路由器类型OSPF中的ABRL2路由器类似OSPF中骨干区域路由器L1路由器类似OSPF中常规区域路由器
配置各个路由器的IP地址
R1——设置IP地址
<Huawei>system-view //进入系统视图[Huawei]undo info-center enable //关闭信息告警提示[Huawei]sysname R1 // 改名[R1]interface g0/0/0 //进入接口[R1-GigabitEthernet0/0/0]ip address 12.1.1.1 24 //设置IP地址 [R1-GigabitEthernet0/0/0]quit //退出 [R1]interface LoopBack 0 //进入环回接口 [R1-LoopBack0]ip address 1.1.1.1 24 //设置IP地址 [R1-LoopBack0]quit //退出 [R1]interface LoopBack 8 //进入环回接口 [R1-LoopBack8]ip address 8.8.8.8 24 //设置IP地址 [R1-LoopBack8]quit //退出 [R1]R2——设置IP地址
<Huawei>system-view //进入系统视图 [Huawei]undo info-center enable //关闭信息告警[Huawei]sysname R2 //改名[R2]interfac g0/0/0 //进入接口[R2-GigabitEthernet0/0/0]ip address 12.1.1.2 24 //设置IP地址[R2-GigabitEthernet0/0/0]quit // 退出[R2]interface LoopBack 0 // 进入环回接口[R2-LoopBack0]ip address 2.2.2.2 24 //设置Ip地址[R2-LoopBack0]quit // 退出[R2]interface g0/0/1 // 进入接口[R2-GigabitEthernet0/0/1]ip address 23.1.1.2 24 // 设置IP地址[R2-GigabitEthernet0/0/1]quit // 退出[R2]R3——设置IP地址
<Huawei>system-view //进入系统视图 [Huawei]undo info-center enable // 关闭信息告警提示[Huawei]sysname R3 // 改名[R3]interface g0/0/0 //进入接口 [R3-GigabitEthernet0/0/0]ip address 23.1.1.3 24 // 设置IP地址[R3-GigabitEthernet0/0/0]quit // 退出[R3]interface LoopBack 0 // 进入环回接口[R3-LoopBack0]ip address 3.3.3.3 24 // 设置IP地址[R3-LoopBack0]quit // 退出[R3]interface g0/0/1 // 进入接口[R3-GigabitEthernet0/0/1]ip address 34.1.1.3 24 // 设置IP地址[R3-GigabitEthernet0/0/1]quit // 退出[R3]R4——设置IP地址
<Huawei>system-view //进入系统视图 [Huawei]undo info-center enable // 关闭信息告警提示[Huawei]sysname R4 // 改名[R4]interface g0/0/0 // 进入接口[R4-GigabitEthernet0/0/0]ip address 34.1.1.4 24 // 设置IP地址[R4-GigabitEthernet0/0/0]quit // 退出[R4]interface LoopBack 0 // 进入环回接口[R4-LoopBack0]ip address 4.4.4.4 24 // 设置IP地址[R4-LoopBack0]quit // 退出[R4]interface g0/0/1 // 进入接口[R4-GigabitEthernet0/0/1]ip address 45.1.1.4 24 // 设置IP地址[R4-GigabitEthernet0/0/1]quit // 退出[R4]R5——设置IP地址
<Huawei>system-view //进入系统视图 [Huawei]undo info-center enable // 关闭信息告警提示[Huawei]sysname R5 // 改名[R5]interface g0/0/0 // 进入接口[R5-GigabitEthernet0/0/0]ip address 45.1.1.5 24 //设置IP地址 [R5-GigabitEthernet0/0/0]quit // 退出[R5]interface LoopBack 0 // 进入环回接口[R5-LoopBack0]ip address 5.5.5.5 24 // 设置IP地址[R5-LoopBack0]quit // 退出[R5]配置路由器所在ISIS系统中所在区域和系统ID
配置网络实体标识，类似OSPF中的Router-ID，标识该中间系统（路由器）的身份信息。其中49.0002表示路由器所在的区域0000.0000.1111表示系统ID即Router-ID.00固定格式
R1——设置ISIS的系统ID
[R1]isis // 进入ISIS[R1-isis-1]network-entity 49.0002.0000.0000.1111.00 //设置路由器所在区域和路由器ID[R1-isis-1]quit //退出 [R1]R2——设置ISIS的系统ID
[R2]isis //进入ISIS [R2-isis-1]network-entity 49.0002.0000.0000.2222.00 //设置路由器所在区域和路由器ID[R2-isis-1]quit //退出[R2]R3——设置ISIS的系统ID
[R3]isis //进入ISIS [R3-isis-1]network-entity 49.0001.0000.0000.3333.00 //设置路由器所在区域和路由器ID [R3-isis-1]quit //退出 [R3]R4——设置ISIS的系统ID
[R4]isis //进入ISIS [R4-isis-1]network-entity 49.0003.0000.0000.4444.00 //设置路由器所在区域和路由器ID [R4-isis-1]quit //退出 [R4]R5——设置ISIS的系统ID
[R5]isis //进入ISIS [R5-isis-1]network-entity 49.0003.0000.0000.5555.00 //设置路由器所在区域和路由器ID [R5-isis-1]quit //退出 [R5]宣告ISIS区域路由器中的网段
R1——宣告直连、环回网段和RIP区域
[R1]interface g0/0/0 //进入接口[R1-GigabitEthernet0/0/0]isis enable 1 //宣告网段[R1-GigabitEthernet0/0/0]quit //退出[R1]interface LoopBack 0 //进入环回接口 [R1-LoopBack0]isis enable 1 //宣告网段[R1-LoopBack0]quit //退出[R1]rip //进入RIP[R1-rip-1]version 2 //协议2[R1-rip-1]undo summary //关闭自动汇总[R1-rip-1]network 8.0.0.0 //宣告网段[R1-rip-1]quit //退出[R1]R2——宣告直连、环回网段
[R2]interface g0/0/0 //进入接口[R2-GigabitEthernet0/0/0]isis enable 1 //宣告网段[R2-GigabitEthernet0/0/0]quit //退出[R2]interface g0/0/1 //进入接口[R2-GigabitEthernet0/0/1]isis enable 1 //宣告网段[R2-GigabitEthernet0/0/1]quit //退出[R2]interface LoopBack 0 //进入环回接口[R2-LoopBack0]isis enable 1 //宣告网段[R2-LoopBack0]quit //退出[R2]R3——宣告直连、环回网段
[R3]interface g0/0/0 //进入接口[R3-GigabitEthernet0/0/0]isis enable 1 //宣告网段[R3-GigabitEthernet0/0/0]quit //退出[R3]interface g0/0/1 //进入接口[R3-GigabitEthernet0/0/1]isis enable 1 //宣告网段[R3-GigabitEthernet0/0/1]quit //退出[R3]interface LoopBack 0 //进入换回接口[R3-LoopBack0]isis enable 1 //宣告网段[R3-LoopBack0]quit //退出[R3]R4——宣告直连、环回网段
[R4]interface g0/0/0 //进入接口[R4-GigabitEthernet0/0/0]isis enable 1 //宣告网段[R4-GigabitEthernet0/0/0]quit //退出[R4]interface g0/0/1 //进入接口[R4-GigabitEthernet0/0/1]isis enable 1 //宣告网段[R4-GigabitEthernet0/0/1]quit //退出[R4]interface LoopBack 0 //进入环回接口[R4-LoopBack0]isis enable 1 //宣告网段[R4-LoopBack0]quit //退出[R4]R5——宣告直连、环回网段
[R5]interface g0/0/0 //进入接口[R5-GigabitEthernet0/0/0]isis enable 1 //宣告网段[R5-GigabitEthernet0/0/0]quit //退出[R5]interface LoopBack 0 //进入环回接口 [R5-LoopBack0]isis enable 1 //宣告网段[R5-LoopBack0]quit //退出[R5]查看路由器是否学习到所有的IP地址
R3——查看路由表
[R3]dis ip routing-table //查看路由表Route Flags: R - relay, D - download to fib------------------------------------------------------------------------------Routing Tables: Public Destinations : 19 Routes : 19 Destination/Mask Proto Pre Cost Flags NextHop Interface 1.1.1.0/24 ISIS-L2 15 20 D 23.1.1.2 GigabitEthernet0/0/0 2.2.2.0/24 ISIS-L2 15 10 D 23.1.1.2 GigabitEthernet0/0/0 3.3.3.0/24 Direct 0 0 D 3.3.3.3 LoopBack0 3.3.3.3/32 Direct 0 0 D 127.0.0.1 LoopBack0 3.3.3.255/32 Direct 0 0 D 127.0.0.1 LoopBack0 4.4.4.0/24 ISIS-L2 15 10 D 34.1.1.4 GigabitEthernet0/0/1 5.5.5.0/24 ISIS-L2 15 20 D 34.1.1.4 GigabitEthernet0/0/1 12.1.1.0/24 ISIS-L2 15 20 D 23.1.1.2 GigabitEthernet0/0/0 23.1.1.0/24 Direct 0 0 D 23.1.1.3 GigabitEthernet0/0/0 23.1.1.3/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 23.1.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 34.1.1.0/24 Direct 0 0 D 34.1.1.3 GigabitEthernet0/0/1 34.1.1.3/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/1 34.1.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/1 45.1.1.0/24 ISIS-L2 15 20 D 34.1.1.4 GigabitEthernet0/0/1 127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0 127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0[R3]//除了RIP的路由，其他路由都学到了修改路由器的Level类型
默认情况下，骨干区域的路由不会发送到L1路由器（常规区域），且L1路由器会自动形成指向L12路由器的缺省路由（这种特性类似OSPF中的totally stub）
R1——将类型修改为Level 1
[R1]isis //进入ISIS [R1-isis-1]is-level level-1 //修改路由器的类型为L1[R1-isis-1]quit //退出[R1]R1——查看路由表
[R1]dis ip routing-table //查看路由表 Route Flags: R - relay, D - download to fib------------------------------------------------------------------------------Routing Tables: Public Destinations : 16 Routes : 16 Destination/Mask Proto Pre Cost Flags NextHop Interface 0.0.0.0/0 ISIS-L1 15 10 D 12.1.1.2 GigabitEthernet //默认增加一条缺省路由0/0/0 1.1.1.0/24 Direct 0 0 D 1.1.1.1 LoopBack0 1.1.1.1/32 Direct 0 0 D 127.0.0.1 LoopBack0 1.1.1.255/32 Direct 0 0 D 127.0.0.1 LoopBack0 2.2.2.0/24 ISIS-L1 15 10 D 12.1.1.2 GigabitEthernet0/0/0 8.8.8.0/24 Direct 0 0 D 8.8.8.8 LoopBack8 8.8.8.8/32 Direct 0 0 D 127.0.0.1 LoopBack8 8.8.8.255/32 Direct 0 0 D 127.0.0.1 LoopBack8 12.1.1.0/24 Direct 0 0 D 12.1.1.1 GigabitEthernet0/0/0 12.1.1.1/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 12.1.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 23.1.1.0/24 ISIS-L1 15 20 D 12.1.1.2 GigabitEthernet0/0/0 127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0 127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0[R1]R3——将类型修改为Level 2
[R3]isis //进入ISIS [R3-isis-1]is-level level-2 // 修改路由器的类型为L2[R3-isis-1]quit // 退出[R3]R5——将类型修改为Level 1
[R5]isis // 进入ISIS [R5-isis-1]is-level level-1 // 修改路由器的类型为L1[R5-isis-1]quit // 退出[R5]R5——查看路由表
[R5]dis ip routing-table // 查看路由表Route Flags: R - relay, D - download to fib------------------------------------------------------------------------------Routing Tables: Public Destinations : 13 Routes : 13 Destination/Mask Proto Pre Cost Flags NextHop Interface 0.0.0.0/0 ISIS-L1 15 10 D 45.1.1.4 GigabitEthernet // 默认增加一条缺省路由0/0/0 4.4.4.0/24 ISIS-L1 15 10 D 45.1.1.4 GigabitEthernet0/0/0 5.5.5.0/24 Direct 0 0 D 5.5.5.5 LoopBack0 5.5.5.5/32 Direct 0 0 D 127.0.0.1 LoopBack0 5.5.5.255/32 Direct 0 0 D 127.0.0.1 LoopBack0 34.1.1.0/24 ISIS-L1 15 20 D 45.1.1.4 GigabitEthernet0/0/0 45.1.1.0/24 Direct 0 0 D 45.1.1.5 GigabitEthernet0/0/0 45.1.1.5/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 45.1.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0 127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0[R5]查看ISIS的简要信息
R1——查看ISIS简要信息
[R1]dis isis brief //查看ISIS简要信息 ISIS Protocol Information for ISIS(1) -------------------------------------SystemId: 0000.0000.1111 System Level: L1 //类型为L1 Area-Authentication-mode: NULLDomain-Authentication-mode: NULLIpv6 is not enabledISIS is in invalid restart statusISIS is in protocol hot standby state: Real-Time BackupInterface: 12.1.1.1(GE0/0/0)Cost: L1 10 L2 10 Ipv6 Cost: L1 10 L2 10 State: IPV4 Up IPV6 DownType: BROADCAST MTU: 1497 Priority: L1 64 L2 64 Timers: Csnp: L1 10 L2 10 ,Retransmit: L12 5 , Hello: L1 10 L2 10 ,Hello Multiplier: L1 3 L2 3 , LSP-Throttle Timer: L12 50 Interface: 1.1.1.1(Loop0)Cost: L1 0 L2 0 Ipv6 Cost: L1 0 L2 0 State: IPV4 Up IPV6 DownType: P2P MTU: 1500 Priority: L1 64 L2 64 Timers: Csnp: L12 10 , Retransmit: L12 5 , Hello: 10 ,Hello Multiplier: 3 , LSP-Throttle Timer: L12 50 [R1]R3——查看ISIS简要信息
[R3]dis isis brief //查看ISIS简要信息 ISIS Protocol Information for ISIS(1) -------------------------------------SystemId: 0000.0000.3333 System Level: L2 //类型为L2 Area-Authentication-mode: NULLDomain-Authentication-mode: NULLIpv6 is not enabledISIS is in invalid restart statusISIS is in protocol hot standby state: Real-Time BackupInterface: 23.1.1.3(GE0/0/0)Cost: L1 10 L2 10 Ipv6 Cost: L1 10 L2 10 State: IPV4 Up IPV6 DownType: BROADCAST MTU: 1497 Priority: L1 64 L2 64 Timers: Csnp: L1 10 L2 10 ,Retransmit: L12 5 , Hello: L1 10 L2 10 ,Hello Multiplier: L1 3 L2 3 , LSP-Throttle Timer: L12 50 Interface: 34.1.1.3(GE0/0/1)Cost: L1 10 L2 10 Ipv6 Cost: L1 10 L2 10 State: IPV4 Up IPV6 DownType: BROADCAST MTU: 1497 Priority: L1 64 L2 64 Timers: Csnp: L1 10 L2 10 ,Retransmit: L12 5 , Hello: L1 10 L2 10 ,Hello Multiplier: L1 3 L2 3 , LSP-Throttle Timer: L12 50 Interface: 3.3.3.3(Loop0)Cost: L1 0 L2 0 Ipv6 Cost: L1 0 L2 0 State: IPV4 Up IPV6 DownType: P2P MTU: 1500 Priority: L1 64 L2 64 Timers: Csnp: L12 10 , Retransmit: L12 5 , Hello: 10 ,Hello Multiplier: 3 , LSP-Throttle Timer: L12 50 [R3]R5——查看ISIS 简要信息
[R5]dis isis brief //查看ISIS简要信息 ISIS Protocol Information for ISIS(1) -------------------------------------SystemId: 0000.0000.5555 System Level: L1 //类型为L1 Area-Authentication-mode: NULLDomain-Authentication-mode: NULLIpv6 is not enabledISIS is in invalid restart statusISIS is in protocol hot standby state: Real-Time BackupInterface: 45.1.1.5(GE0/0/0)Cost: L1 10 L2 10 Ipv6 Cost: L1 10 L2 10 State: IPV4 Up IPV6 DownType: BROADCAST MTU: 1497 Priority: L1 64 L2 64 Timers: Csnp: L1 10 L2 10 ,Retransmit: L12 5 , Hello: L1 10 L2 10 ,Hello Multiplier: L1 3 L2 3 , LSP-Throttle Timer: L12 50 Interface: 5.5.5.5(Loop0)Cost: L1 0 L2 0 Ipv6 Cost: L1 0 L2 0 State: IPV4 Up IPV6 DownType: P2P MTU: 1500 Priority: L1 64 L2 64 Timers: Csnp: L12 10 , Retransmit: L12 5 , Hello: 10 ,Hello Multiplier: 3 , LSP-Throttle Timer: L12 50 [R5]修改ISIS接口发送报文类型Level
R2——修改接口发送报文类型
[R2]interface g0/0/0 //进入接口[R2-GigabitEthernet0/0/0]isis circuit-level level-1 //设置该接口只发送L1报文 [R2-GigabitEthernet0/0/0]quit //退出 [R2]interface g0/0/1 //进入接口 [R2-GigabitEthernet0/0/1]isis circuit-level level-2 //设置该接口只发送L2报文 [R2-GigabitEthernet0/0/1]quit //退出 [R2]R1——测试是否可以ping通R3
<R1>ping 3.3.3.3 //测试是否可以ping 通R3设备 PING 3.3.3.3: 56 data bytes, press CTRL_C to break Reply from 3.3.3.3: bytes=56 Sequence=1 ttl=254 time=50 ms Reply from 3.3.3.3: bytes=56 Sequence=2 ttl=254 time=20 ms Reply from 3.3.3.3: bytes=56 Sequence=3 ttl=254 time=20 ms Reply from 3.3.3.3: bytes=56 Sequence=4 ttl=254 time=20 ms Reply from 3.3.3.3: bytes=56 Sequence=5 ttl=254 time=30 ms //ping 通 --- 3.3.3.3 ping statistics --- 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 20/28/50 ms<R1>R4——修改接口发送报文类型
[R4]interface g0/0/0 //进入接口 [R4-GigabitEthernet0/0/0]isis circuit-level level-2 //设置该接口只发送L2报文 [R4-GigabitEthernet0/0/0]quit //退出 [R4]interface g0/0/1 //进入接口 [R4-GigabitEthernet0/0/1]isis circuit-level level-1 //设置该接口只发送L1报文 [R4-GigabitEthernet0/0/1]quit //退出 [R4]R5——测试是否可以ping通R3
<R5>ping 3.3.3.3 //测试是否可以ping 通R3设备 PING 3.3.3.3: 56 data bytes, press CTRL_C to break Reply from 3.3.3.3: bytes=56 Sequence=1 ttl=254 time=10 ms Reply from 3.3.3.3: bytes=56 Sequence=2 ttl=254 time=40 ms Reply from 3.3.3.3: bytes=56 Sequence=3 ttl=254 time=30 ms Reply from 3.3.3.3: bytes=56 Sequence=4 ttl=254 time=30 ms Reply from 3.3.3.3: bytes=56 Sequence=5 ttl=254 time=40 ms //ping 通 --- 3.3.3.3 ping statistics --- 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 10/30/40 ms<R5>查看邻居表
R3——查看邻居表
[R3]dis isis peer //查看邻居表 Peer information for ISIS(1) System Id Interface Circuit Id State HoldTime Type PRI-------------------------------------------------------------------------------0000.0000.2222 GE0/0/0 0000.0000.3333.01 Up 21s L2 64 0000.0000.4444 GE0/0/1 0000.0000.4444.01 Up 8s L2 64 Total Peer(s): 2[R3]查看拓扑表
R3——查看拓扑表
[R3]dis isis lsdb //查看拓扑表 Database information for ISIS(1) -------------------------------- Level-2 Link State DatabaseLSPID Seq Num Checksum Holdtime Length ATT/P/OL-------------------------------------------------------------------------------0000.0000.2222.00-00 0x0000001e 0xed40 1084 114 0/0/0 0000.0000.3333.00-00* 0x0000000e 0x9ec3 1045 113 0/0/0 0000.0000.3333.01-00* 0x00000006 0xf484 1045 55 0/0/0 0000.0000.4444.00-00 0x00000017 0xc492 1153 114 0/0/0 0000.0000.4444.01-00 0x00000005 0xb261 1153 55 0/0/0 0000.0000.5555.00-00 0x0000000a 0x96c7 166 110 0/0/0 Total LSP(s): 6 *(In TLV)-Leaking Route, *(By LSPID)-Self LSP, +-Self LSP(Extended), ATT-Attached, P-Partition, OL-Overload[R3]向ISIS引入其他自制系统的路由
R1——ISIS引入RIP
[R1]isis //进入ISIS [R1-isis-1]import-route rip 1 level-1 //接level 1指的是以level 1的形式引入[R1-isis-1]quit //退出 [R1]R3——查看路由表
[R3]dis ip routing-table //查看路由表 Route Flags: R - relay, D - download to fib------------------------------------------------------------------------------Routing Tables: Public Destinations : 20 Routes : 20 Destination/Mask Proto Pre Cost Flags NextHop Interface 1.1.1.0/24 ISIS-L2 15 20 D 23.1.1.2 GigabitEthernet0/0/0 2.2.2.0/24 ISIS-L2 15 10 D 23.1.1.2 GigabitEthernet0/0/0 3.3.3.0/24 Direct 0 0 D 3.3.3.3 LoopBack0 3.3.3.3/32 Direct 0 0 D 127.0.0.1 LoopBack0 3.3.3.255/32 Direct 0 0 D 127.0.0.1 LoopBack0 4.4.4.0/24 ISIS-L2 15 10 D 34.1.1.4 GigabitEthernet0/0/1 5.5.5.0/24 ISIS-L2 15 20 D 34.1.1.4 GigabitEthernet0/0/1 8.8.8.0/24 ISIS-L2 15 84 D 23.1.1.2 GigabitEthernet //RIP路由信息成功引入0/0/0 12.1.1.0/24 ISIS-L2 15 20 D 23.1.1.2 GigabitEthernet0/0/0 23.1.1.0/24 Direct 0 0 D 23.1.1.3 GigabitEthernet0/0/0 23.1.1.3/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 23.1.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 34.1.1.0/24 Direct 0 0 D 34.1.1.3 GigabitEthernet0/0/1 34.1.1.3/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/1 34.1.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/1 45.1.1.0/24 ISIS-L2 15 20 D 34.1.1.4 GigabitEthernet0/0/1 127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0 127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0[R3]