What does the 0.0.0.0/0 mean in a routing table?

2 thoughts on “What does the 0.0.0.0/0 mean in a routing table?”

1. The best answer is Default Route, as to avoid confusion to upcoming reader of this question.

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2. https://www.cisco.com/c/en/us/support/docs/ip/routing-information-protocol-rip/16448-default.html#route0.0

   router-3#configure terminal
   Enter configuration commands, one per line. End with CNTL/Z.
   router-3(config)#ip route 0.0.0.0 0.0.0.0 170.170.3.4
   router-3(config)#^Z
   router-3#

   router-3#show ip route
   Codes: C – connected, S – static, I – IGRP, 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, E – EGP
   i – IS-IS, L1 – IS-IS level-1, L2 – IS-IS level-2, * – candidate default
   U – per-user static route, o – ODR

   Gateway of last resort is 170.170.3.4 to network 0.0.0.0

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