라우팅 테이블(Routing table) 보는 방법

라우팅 테이블(Routing table) 보는 방법에 대해서 알아보자.

 

Switch # show ip route

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

       E1 - OSPF external type 1, E2 - OSPF external type 2

       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

       ia - IS-IS inter area, * - candidate default, U - per-user static route

       o - ODR, P - periodic downloaded static route

 

Gateway of last resort is 172.16.20.254 to network 0.0.0.0

 

     31.0.0.0/24 is subnetted, 1 subnets

C       31.31.1.0/24 is directly connected, GigabitEthernet 1/1

     172.16.0.0/24 is subnetted, 1 subnets

S       172.16.10.0/24 [1/0] via 172.16.20.254

 

 

[1/0]

AD value 신뢰도,우선순위 (낮을수록 더 높다)
Administrative Distance value
routing protocol
static AD value 1 (default)

 

C - connected 0
S - static 1
I - IGRP 100
O - OSPF 110
R - RIP 120

 

[1/0]

metric : network cost (비용)
장비마다 비용 계산하는 방법이 다르다.

 

routing table :  S network address [1 / 0]  via gateway_ip
static route : ad value = 1
static route : metric = 0