Two Level 2 routers are exchanging Hello packets with different Area IDs. What occurs between these routers?()
A、An Adjacency forms.
B、An Adjacency does not form.
C、An Adjacency forms but traffic is not forwarded.
D、No IS-IS PDUs are sent.
A、An Adjacency forms.
B、An Adjacency does not form.
C、An Adjacency forms but traffic is not forwarded.
D、No IS-IS PDUs are sent.
A、A. Level 1 only routers see routes contained in their area. B、B. Level 1 routers route towards Level 2 routers due to the attached bit. C、C. Level 2 routers route towards Level 1 routers due to the attached bit. D、D. Level 2 routers can see routes in other Level 2 areas and routes originated in Level 1 areas.
A、Router A must have a Level 2 adjacency with the Level 1/Level 2 router in area 49.0001. B、The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 2 LSP it floods into area 49.0001. C、The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 1 link-state PDU (LSP) it floods into area 49.0001. D、The Level 1/Level 2 router in area 49.0001 advertises these prefixes into area 49.0001 using a Level 2 LSP it floods into the area.
A、A. Router A must have a Level 2 adjacency with the Level 1/Level 2 router in area 49.0001. B、B. The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 1 link-state PDU (LSP) it floods into area 49.0001. C、C. The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 2 LSP it floods into area 49.0001. D、D. The Level 1/Level 2 router in area 49.0001 advertises these prefixes into area 49.0001 using a Level 2 LSP it floods into the area.
A、Routers maintain a single link-state database per area. B、Routers maintain a separate Level 1 link-state database. C、Routers maintain a separate Level 2 link-state database. D、Routers maintain a single Level 1 link-state database across multiple areas.
A、You can reach other Level 2 routers. B、It can reach at least one other defined area. C、The router is reachable by at least two ES-IS nodes. D、It has at least one enabled reachable prefix with a valid metric defined.
A、No routers are adjacent with each other. B、Only Router A and Router B are adjacent at Level 1. C、Only Router A and Router B are adjacent at Level 2. D、All three routers are adjacent with each other at Level 1.
A、Level-1(L1) routers use default routes announced by Level-2(L2) routers in Level-1(L1) domain B、Level-1 routers use default routes installed based on ATT bit (Attach Bit) in announcements from Level-1-2(L1/L2) router C、Level-1 routers use specific routes, for other Level-1 domain, announced by Level-1-2(L1/L2) by route-leaking feature of Cisco IOS D、Level-1 routers use specific routes, for other Level-1 domain, announced by Level-2(L2) by route-leaking feature of Cisco IOS