Whether every router in a AS must have its RouterID?











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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




























    up vote
    4
    down vote

    favorite












    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


























      up vote
      4
      down vote

      favorite









      up vote
      4
      down vote

      favorite











      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















      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




      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♦

      60.1k1058109




      60.1k1058109










      asked Nov 20 at 2:43









      three-blocks

      1946




      1946






















          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
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes








          up vote
          5
          down vote



          accepted










          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















          up vote
          5
          down vote



          accepted










          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













          up vote
          5
          down vote



          accepted







          up vote
          5
          down vote



          accepted






          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♦

          60.1k1058109




          60.1k1058109












          • 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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