Interested to Buy Any Domain ? << Click Here >> for more details...
hi shain/sudeep and rest of all plz answer these question
for help some one as soon as possible
what is stub area
what is transit area
let there are three area in ospf a0 a2 and a3 if a2 and a3
is coneted
through each other will they comnicate
- 3 Answers
- 5332 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Transit area: Transit area are used to pass traffic from an
area that is not directly connected to backbone area.
Transit area doesn't originate that traffic and is not the
destination for those traffic.
By definition we can say that OSPF area 0 is a transit area.
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / shivali
yes, if a2 & a3 are connect to each other through virtual link. thn dey cn comm. wid ech other.......
| Is This Answer Correct ? | 1 Yes | 0 No |
Stub Area: Stub area is defined as area which can accept
intra-area routes (LSA 1 & LSA 2), Inter-area routes (LSA 3
& LSA 4) but don't accept any external routes (LSA 5) that
is redistributed in OSPF area. A backbone area will
advertise a default routes to a stub area or a network
summary LSA for the destination 0.0.0.0
Stub area limitation are -
a. Stub area can't include virtual links
b. Stub area can't include an ASBR.
c. Stubbiness must be configured on all routers in the area.
R1------R2-----R3
! ! !
! ! !
! ! !
NW1 NW2 NW3
R1
Interface IP Address Subnet Mask
S1/0 - 1.1.1.1 255.0.0.0
Fa 0/0 - 10.1.1.1 255.0.0.0
R2
Interface IP Address Subnet Mask
S 1/0 - 1.1.1.2 255.0.0.0
S1/1 - 2.2.2.1 255.0.0.0
Fa0/0 20.1.1.1 255.0.0.0
R3
Interface IP Address Subnet Mask
S1/0 - 2.2.2.2 255.0.0.0
Fa0/0 - 30.1.1.1 255.0.0.0
R1 configuration -
Router ospf 1
Network 1.1.1.1 0.0.0.0 area 0
Network 10.0.0.0 0.255.255.255 area 1
R2 Configuration -
Router ospf 1
Network 1.1.1.2 0.0.0.0 area0
Network 2.2.2.1 0.0.0.0 area2
Router eigrp100
Network 20.0.0.0
No auto-summary
Router ospf 1
Redistribute eigrp 100 metric 10 subnets
R3 Configuration -
Router ospf 1
Network 2.2.2.2 0.0.0.0 area2
Network 30.0.0.0 0.255.255.255 area2
Varification on Router3
R3#show ip route
O IA 1.0.0.0/8 [110/128] via 2.2.2.1, 00:01:08, Serial0
C 2.0.0.0/8 is directly connected, Serial0
O E2 20.0.0.0/8 [110/10] via 2.2.2.1, 00:00:03, Serial0
O IA 10.0.0.0/8 [110/129] via 2.2.2.1, 00:01:08, Serial0
C 30.0.0.0/8 is directly connected, Ethernet0
The output displays inter-area routes (O IA) and OSPF
external type 2 (O E2).
Now, Configure OSPF Area 1 as Stub.
R2
Router ospf 1
Area 1 stub
R3
Router ospf 1
Area 1 stub
After configuring stub, verify the routing table on R3.
R3#show ip route
O IA 1.0.0.0/8 [110/128] via 2.2.2.1, 00:00:03, Serial0
C 2.0.0.0/8 is directly connected, Serial0
O IA 10.0.0.0/8 [110/129] via 2.2.2.1, 00:00:03, Serial0
C 30.0.0.0/8 is directly connected, Ethernet0
O*IA 0.0.0.0/0 [110/65] via 2.2.2.1, 00:00:03, Serial0
The output displays default route and inter-area routes,
both designated with (OIA) in the
routing table.
Default route is denoted as (O* IA).
| Is This Answer Correct ? | 0 Yes | 0 No |
Can anyone explain the STP Security features. Just like BPDU guard, Root Guard. Hi JITENDERA, i m specially looking for u?????
Operation of two PC connecting with brand new switches. (they expecting step by step arp ,broadcast,MAC table, RARP operation)
Identify the 2 commands that will display the status and information about interface E0 only? A.) show interface ethernet E0 B.) show interface E0 C.) show E0 D.) show int E0 E.) show interface
Identify the 2 items that TCP and UDP share in common? A.) Both use port numbers to identify upper level applications B.) Operate at the Network layer C.) Both are Transport protocols D.) Both are reliable communications
Using the TCP/IP protocol suite, a message is sent from host A to a destination IP address on the same LAN. How does host A determine the destination of a MAC address? A. It uses a proxy APP B. It uses APP requests C. It uses PARP requests D. It uses a router lookup table
How many collisions are caused by transmitting and receiving frames simultaneously in a full-duplex Ethernet technology? A. one B. two C. none D. several
As a system administrator, you perform an extended ping at the privileged EXEC prompt. As part of the display, you see "Set DF bit in IP header? [yes] :" What would happen if you answered no at the prompt. A. This lets the router fragment the packet. B. It tells the router not to fragment the packet. C. This lets the router direct the packet to the destination it finds in its routing table. D. It tell the router to send the packet to the next hop router.
Identify the command that specifies Serial 0 in slot 1? A.) Router(config)# interface serial1/1 B.) Router(config)# interface serial1/0 C.) Router(config)# interface serial0.1 D.) Router(config)# interface serial0/1
What is the difference between csma/cd?
Which layer is responsible for routing through an internetwork? A.) Physical B.) Session C.) Network D.) Transport E.) Application F.) Data Link
What is the default size of a standard ping on a Cisco router? * A: 100 bytes * B: 32 bytes * C: 10 bytes * D: 16 bytes
Identify the 2 commands the saves the running-config to NVRAM? A.) write memory B.) copy running-config startup-config C.) write network D.) write backup
CCNA 
