Enterprise Router R1, in ASN 1, connects to ISP Router I1, ASN 2, using eBGP. There are
two parallel serial links between the two routers. The implementation plan calls for each
router to base their BGP TCP connection on their respective loopback1 interfaces, with IP
addresses 1.1.1.1 and 2.2.2.2, respectively. Which of the following commands would not be
part of a working eBGP configuration on Router R1?

The following output, taken from a show ip bgp command on Router R1, lists two neighbors.
In what BGP neighbor state is neighbor 1.1.1.1?
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/PfxRcd
1.1.1.1 4 1 60 61 26 0 0 00:45:01
0
2.2.2.2 4 3 153 159 26 0 0 00:38:13
1

The following output was taken from the show ip bgp command on Router R2. In this case,
which of the following commands are most likely to already be configured on R2? (Choose
two.)
BGP router identifier 11.11.11.11, local AS number 11
…
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/PfxRcd
1.1.1.1 4 1 87 87 0 0 0 00:00:06 Idle
(Admin)
2.2.2.2 4 3 173 183 41 0 0 00:58:47
2

Which of the following answers is most true about the BGP Update message?

The following output occurs on Router R1. Which of the following cannot be determined from
this output?
R1# show ip route 180.1.1.0 255.255.255.240
Routing entry for 180.1.1.0/28
Known via “bgp 2”, distance 20, metric 0
Tag 3, type external
Last update from 192.168.1.2 00:10:27 ago
Routing Descriptor Blocks:
* 192.168.1.2, from 192.168.1.2, 00:10:27 ago
Route metric is 0, traffic share count is 1
AS Hops 2
Route tag 3

The following line of output was extracted from the output of the show ip bgp command on
Router R1. Which of the following can be determined from this output?
Network Next Hop Metric LocPrf Weight Path
* 130.1.1.0/28 1.1.1.1 0 1 2 3 4 i

Router R1 has eBGP connections to I1 and I2, routers at the same ISP. The company that
owns R1 can use public address range 130.1.16.0/20. The following output lists all the IP
routes in R1’s routing table within this rangE. Which of the following answers would cause
R1 to advertise the 130.1.16.0/20 prefix to its eBGP peers? (You should assume default
settings for any parameters not mentioned in this question.)
R1# show ip route 130.1.16.0 255.255.240.0 longer-prefixes
! lines omitteD…
O 130.1.16.0/24 [110/3] via 10.5.1.1, 00:14:36, FastEthernet0/1
O 130.1.17.0/24 [110/3] via 10.5.1.1, 00:14:36, FastEthernet0/1
O 130.1.18.0/24 [110/3] via 10.5.1.1, 00:14:36, FastEthernet0/1

R1 in ASN 1 with loopback1 address 1.1.1.1 needs to be configured with an iBGP
connection to R2 with loopback2 IP address 2.2.2.2. The connection should use the
loopbacks. Which of the following commands is required on R1?

The following output occurred as a result of the show ip bgp command on Router
R1. The output shows all BGP table entries on R1. How many iBGP-learned routes exist on
this router?
*>i181.0.0.0/8 10.100.1.1 0 100 0 1 2 111 112 i
*>i182.0.0.0/8 10.100.1.1 0 100 0 1 2 222 i
*>i183.0.0.0/8 10.100.1.1 0 100 0 1 2 i
*>i184.0.0.0/8 10.100.1.1 0 100 0 1 2 i
*> 192.135.250.0/28 192.168.1.6 0 3 4 i

The following output on Router R1 lists details of a BGP route for 190.1.0.0/16. Which of the
following is true based on this output? (Choose 2)
R1# show ip bgp 190.1.0.0/16
BGP routing table entry for 190.1.0.0/16, version 121
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Advertised to update-groups:
1
1 2 3 4
1.1.1.1 from 2.2.2.2 (3.3.3.3)
Origin IGP, metric 0, localpref 100, valid, internal, best