【技术分享】IS-IS基本配置
发布作者：微思网络 发布时间：2022-09-05 浏览量：0次
客户网络所有路由器路由协议要求启用IS-IS，使全网路由可达。全部IS-IS进程号统一为100，其中RTA在Area49.0001区域为DIS，RTD与RTE之间要求采用P2P网络类型，RTE引入直连链路192.168.X.X，要求RTA访问Area49.0002走最优路径。R1配置：
isis 100
is-level level-1
network-entity 49.0001.0000.0000.0001.00
#
interface GigabitEthernet0/0/0
ip address 10.1.123.1 255.255.255.0
isis enable 100
isis dis-priority 120 level-1
R2配置：
isis 100
network-entity 49.0001.0000.0000.0002.00
import-route isis level-2 into level-1
#
interface GigabitEthernet0/0/0
ip address 10.1.123.2 255.255.255.0
isis enable 100
#
interface GigabitEthernet0/0/1
ip address 24.1.1.2 255.255.255.0
isis enable 100
R3配置：
isis 100
network-entity 49.0001.0000.0000.0003.00
import-route isis level-2 into level-1
#
interface Serial1/0/0
link-protocol ppp
ip address 34.1.1.3 255.255.255.0
isis enable 100
#
interface GigabitEthernet0/0/0
ip address 10.1.123.3 255.255.255.0
isis enable 100
R4配置：
isis 100
is-level level-2
network-entity 49.0002.0000.0000.0004.00
#
interface Serial1/0/0
link-protocol ppp
ip address 34.1.1.4 255.255.255.0
#
interface GigabitEthernet0/0/0
ip address 45.1.1.4 255.255.255.0
isis enable 100
isis circuit-type p2p
#
interface GigabitEthernet0/0/1
ip address 24.1.1.4 255.255.255.0
isis enable 100
R5配置：
isis 100
is-level level-2
network-entity 49.0002.0000.0000.0005.00
import-route direct
interface GigabitEthernet0/0/0
ip address 45.1.1.5 255.255.255.0
isis enable 100
isis circuit-type p2p
#
interface LoopBack0
ip address 192.168.1.254 255.255.255.0
#
interface LoopBack1
ip address 192.168.2.254 255.255.255.0
#
interface LoopBack2
ip address 192.168.3.254 255.255.255.0在R1上查看isis路由
[RTA]display isis route
Route information for ISIS(100)
-------------------------------
ISIS(100) Level-1 Forwarding Table
----------------------------------
IPV4 Destination IntCost ExtCost ExitInterface NextHop Flags
-------------------------------------------------------------------------------
0.0.0.0/0 10 NULL GE0/0/0 10.1.123.2 A/-/-/-
GE0/0/0 10.1.123.3
192.168.2.0/24 10 20 GE0/0/0 10.1.123.2 A/-/-/U
192.168.1.0/24 10 20 GE0/0/0 10.1.123.2 A/-/-/U
10.1.123.0/24 10 NULL GE0/0/0 Direct D/-/L/-
192.168.3.0/24 10 20 GE0/0/0 10.1.123.2 A/-/-/U
24.1.1.0/24 20 NULL GE0/0/0 10.1.123.2 A/-/-/-
34.1.1.0/24 20 NULL GE0/0/0 10.1.123.3 A/-/-/-
45.1.1.0/24 30 NULL GE0/0/0 10.1.123.2 A/-/-/U
Flags: D-Direct, A-Added to URT, L-Advertised in LSPs, S-IGP Shortcut,
U-Up/Down Bit Set[RTA]ping 192.168.1.254
PING 192.168.1.254: 56 data bytes, press CTRL_C to break
Reply from 192.168.1.254: bytes=56 Sequence=1 ttl=253 time=80 ms
Reply from 192.168.1.254: bytes=56 Sequence=2 ttl=253 time=80 ms
Reply from 192.168.1.254: bytes=56 Sequence=3 ttl=253 time=80 ms
Reply from 192.168.1.254: bytes=56 Sequence=4 ttl=253 time=70 ms
Reply from 192.168.1.254: bytes=56 Sequence=5 ttl=253 time=30 ms
--- 192.168.1.254 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 30/68/80 ms
[RTA]ping 192.168.2.254
PING 192.168.2.254: 56 data bytes, press CTRL_C to break
Reply from 192.168.2.254: bytes=56 Sequence=1 ttl=253 time=70 ms
Reply from 192.168.2.254: bytes=56 Sequence=2 ttl=253 time=50 ms
Reply from 192.168.2.254: bytes=56 Sequence=3 ttl=253 time=50 ms
Reply from 192.168.2.254: bytes=56 Sequence=4 ttl=253 time=50 ms
Reply from 192.168.2.254: bytes=56 Sequence=5 ttl=253 time=60 ms
--- 192.168.2.254 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 50/56/70 ms
[RTA]ping 192.168.3.254
PING 192.168.3.254: 56 data bytes, press CTRL_C to break
Reply from 192.168.3.254: bytes=56 Sequence=1 ttl=253 time=60 ms
Reply from 192.168.3.254: bytes=56 Sequence=2 ttl=253 time=60 ms
Reply from 192.168.3.254: bytes=56 Sequence=3 ttl=253 time=70 ms
Reply from 192.168.3.254: bytes=56 Sequence=4 ttl=253 time=60 ms
Reply from 192.168.3.254: bytes=56 Sequence=5 ttl=253 time=50 ms
--- 192.168.3.254 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 50/60/70 ms
