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JN0-643 · Question #143
JN0-643 Question #143: Real Exam Question with Answer & Explanation
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Question
Looking at the traceoptions output in the exhibit, why are the OSPF routers stuck in Init state? Mar 16 17:48:06.145257 OSPF periodic xmit from 172.14.10.1 to 224.0.0.5 (IFL 69 area 0.0.0.1) Mar 16 17:48:12.404986 ospf_trigger_build_telink_lsas : No peer found Mar 16 17:48:13.013420 ospf_trigger_build_telink_lsas : No peer found Mar 16 17:48:13.013555 ospf_set_lsdb_statE. Router LSA 192.168.2.1 adv- rtr 192.168.2.1 state QUIET->GEN_PENDING Mar 16 17:48:13.013661 OSPF trigger router LSA 0x156d0f0 build for area 0.0.0.1 lsa-id 192.168.2.1 Mar 16 17:48:13.017494 ospf_set_lsdb_statE. Router LSA 192.168.2.1 adv- rtr 192.168.2.1 state GEN_PENDING->QUIET Mar 16 17:48:13.017636 OSPF built router LSA, area 0.0.0.1, link count 2 Mar 16 17:48:13.017954 OSPF sent Hello 172.14.10.1 -> 224.0.0.5 (ge- 0/0/1.0 IFL 69 area 0.0.0.1) Mar 16 17:48:13.018023 Version 2, length 44, ID 192.168.2.1, area 0.0.0.1 Mar 16 17:48:13.018111 mask 255.255.255.0, hello_ivl 10, opts 0x2, prio 128 Mar 16 17:48:13.018162 dead_ivl 40, DR 172.14.10.1, BDR 0.0.0.0 Mar 16 17:48:13.018613 OSPF DR is 192.168.2.1, BDR is 0.0.0.0 Mar 16 17:48:13.018900 OSPF sent Hello 172.14.10.1 -> 224.0.0.5 (ge- 0/0/1.0 IFL 69 area 0.0.0.1) Mar 16 17:48:13.018968 Version 2, length 44, ID 192.168.2.1, area 0.0.0.1 Mar 16 17:48:13.019032 mask 255.255.255.0, hello_ivl 10, opts 0x2, prio 128 Mar 16 17:48:13.019118 dead_ivl 40, DR 172.14.10.1, BDR 0.0.0.0 Mar 16 17:48:13.028426 OSPF DR is 192.168.2.1, BDR is 0.0.0.0 Mar 16 17:48:13.432025 OSPF packet ignoreD. area mismatch (0.0.0.0) from 172.14.10.2 on intf ge-0/0/1.0 area 0.0.0.1 Mar 16 17:48:13.432135 OSPF rcvd Hello 172.14.10.2 -> 224.0.0.5 (ge- 0/0/1.0 IFL 69 area 0.0.0.1) Mar 16 17:48:13.432189 Version 2, length 44, ID 192.168.5.1, area 0.0.0.0 Mar 16 17:48:13.432274 checksum 0x8065, authtype 0 Mar 16 17:48:13.432346 mask 255.255.255.0, hello_ivl 10, opts 0x2, prio 128 Mar 16 17:48:13.432398 dead_ivl 40, DR 172.14.10.2, BDR 0.0.0.0 commit complete
Options
- AThere is an MTU mismatch.
- BThere is a network mask mismatch.
- CThe routers are in different areas.
- DNo BDR has been elected.
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