Whether every router in a AS must have its RouterID?












4














Whether every router in a AS must have its RouterID?



I know if a AS want to use BGP, the routers in the AS must have its own RouterID.



whether a AS want to use router protocol, the routers must have a RouetrID?










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    4














    Whether every router in a AS must have its RouterID?



    I know if a AS want to use BGP, the routers in the AS must have its own RouterID.



    whether a AS want to use router protocol, the routers must have a RouetrID?










    share|improve this question



























      4












      4








      4







      Whether every router in a AS must have its RouterID?



      I know if a AS want to use BGP, the routers in the AS must have its own RouterID.



      whether a AS want to use router protocol, the routers must have a RouetrID?










      share|improve this question















      Whether every router in a AS must have its RouterID?



      I know if a AS want to use BGP, the routers in the AS must have its own RouterID.



      whether a AS want to use router protocol, the routers must have a RouetrID?







      routing router






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 20 at 2:54









      Ron Maupin

      62.4k1262118




      62.4k1262118










      asked Nov 20 at 2:43









      three-blocks

      4357




      4357






















          1 Answer
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          That depends on the routing protocol. For example, every OSPF router will have a router ID, but RIP doesn't use router IDs, it uses the interface address of the directly connected interface.



          Routers that do not use a routing protocol (statically configured, or only route between directly connected networks) to exchange routes will not have a router ID.






          share|improve this answer





















          • how about EIGRP and IS-IS?
            – three-blocks
            Nov 20 at 6:10










          • I was referring to the commonly used open standard routing protocols. IS-IS uses something else (Network Entity Title). EIGRP uses a router ID.
            – Ron Maupin
            Nov 20 at 6:15











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          1 Answer
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          active

          oldest

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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          5














          That depends on the routing protocol. For example, every OSPF router will have a router ID, but RIP doesn't use router IDs, it uses the interface address of the directly connected interface.



          Routers that do not use a routing protocol (statically configured, or only route between directly connected networks) to exchange routes will not have a router ID.






          share|improve this answer





















          • how about EIGRP and IS-IS?
            – three-blocks
            Nov 20 at 6:10










          • I was referring to the commonly used open standard routing protocols. IS-IS uses something else (Network Entity Title). EIGRP uses a router ID.
            – Ron Maupin
            Nov 20 at 6:15
















          5














          That depends on the routing protocol. For example, every OSPF router will have a router ID, but RIP doesn't use router IDs, it uses the interface address of the directly connected interface.



          Routers that do not use a routing protocol (statically configured, or only route between directly connected networks) to exchange routes will not have a router ID.






          share|improve this answer





















          • how about EIGRP and IS-IS?
            – three-blocks
            Nov 20 at 6:10










          • I was referring to the commonly used open standard routing protocols. IS-IS uses something else (Network Entity Title). EIGRP uses a router ID.
            – Ron Maupin
            Nov 20 at 6:15














          5












          5








          5






          That depends on the routing protocol. For example, every OSPF router will have a router ID, but RIP doesn't use router IDs, it uses the interface address of the directly connected interface.



          Routers that do not use a routing protocol (statically configured, or only route between directly connected networks) to exchange routes will not have a router ID.






          share|improve this answer












          That depends on the routing protocol. For example, every OSPF router will have a router ID, but RIP doesn't use router IDs, it uses the interface address of the directly connected interface.



          Routers that do not use a routing protocol (statically configured, or only route between directly connected networks) to exchange routes will not have a router ID.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 20 at 2:53









          Ron Maupin

          62.4k1262118




          62.4k1262118












          • how about EIGRP and IS-IS?
            – three-blocks
            Nov 20 at 6:10










          • I was referring to the commonly used open standard routing protocols. IS-IS uses something else (Network Entity Title). EIGRP uses a router ID.
            – Ron Maupin
            Nov 20 at 6:15


















          • how about EIGRP and IS-IS?
            – three-blocks
            Nov 20 at 6:10










          • I was referring to the commonly used open standard routing protocols. IS-IS uses something else (Network Entity Title). EIGRP uses a router ID.
            – Ron Maupin
            Nov 20 at 6:15
















          how about EIGRP and IS-IS?
          – three-blocks
          Nov 20 at 6:10




          how about EIGRP and IS-IS?
          – three-blocks
          Nov 20 at 6:10












          I was referring to the commonly used open standard routing protocols. IS-IS uses something else (Network Entity Title). EIGRP uses a router ID.
          – Ron Maupin
          Nov 20 at 6:15




          I was referring to the commonly used open standard routing protocols. IS-IS uses something else (Network Entity Title). EIGRP uses a router ID.
          – Ron Maupin
          Nov 20 at 6:15


















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