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BGP Configuration Example #2

Posted by MSSK , 06 October 2013 · 9569 views

BGP Configuration Example #2 Interfaces
R1:
Lo0: 1.1.1.1/32, Lo1: 192.168.1.1/24, Lo2: 192.168.11.1/24, Lo3 192.168.111.1/24

R2:
Lo0: 2.2.2.2/32, Lo1: 192.168.2.1/24, Lo2: 192.168.22.1/24, Lo3: 192.168.222.1/24

R3:
Lo1: 192.168.3.1/24, Lo2: 192.168.33.1/24, Lo3: 192.168.133.1/24

R4
Lo1: 192.168.4.1/24, Lo2: 192.168.44.1/24, Lo3: 192.168.144.1/24

Task 1.1
Configure EIGRP AS 12 on both R1 and R2 and advertise their loopback 0 interfaces in EIGRP

Task 1.2
Make sure updates are exchanged only on the physical interfaces

Task 1.3
Configure BGP according to the diagram shown above and advertise loopback 1, 2, 3 interfaces in BGP

Task 1.4
Advertise the transit link between R1 and R2 in BGP on both routers
Advertise the transit link between R1 and R3 in BGP on R1
Advertise the transit link between R2 and R4 in BGP on R2
Advertise the transit link between R3 and R4 in BGP on both routers

Task 1.5
R4 advertises three networks into BGP, traceroute to R4 192.168.4.0 network should match the below output (the configuration should be done on R1 using local preference)

R2#traceroute 192.168.4.1 numeric  

Type escape sequence to abort.
Tracing the route to 192.168.4.1

  1 192.168.12.1 4 msec 8 msec 4 msec
  2 192.168.13.3 4 msec 4 msec 4 msec
  3 192.168.34.4 4 msec 0 msec 4 msec

Task 1.6
R1 advertises three networks into BGP, traceroute to R1 192.168.1.0 network should match the output below (The configuration should be done on R1 using AS-path)

R3#traceroute 192.168.11.1 numeric

Type escape sequence to abort.
Tracing the route to 192.168.11.1

  1 192.168.34.4 0 msec 4 msec 0 msec
  2 192.168.24.2 [AS 100] 4 msec 0 msec 4 msec
  3 192.168.12.1 [AS 100] 0 msec 4 msec 0 msec

Task 1.7
Change the origin for the 192.168.22.0 prefix to incomplete (configuration should be done on R2)

R4#sh ip bgp
*> 192.168.22.0 192.168.24.2 0 0 100 ?

Task 1.8
Match the output below (configuration done on R2)

R4#sh ip bgp
*  192.168.222.0    192.168.34.3    0 300 100 i
*>   192.168.24.2    222 0 100 i

Task 1.9
Filter the prefix 192.168.144.0/24 from routes advertised from R2 to R1 using prefix-lists (Match the output below)

R2#sh ip bgp neighbors 1.1.1.1 advertised-routes
BGP table version is 38, local router ID is 2.2.2.2
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
  r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network   Next Hop     Metric LocPrf Weight Path
*> 192.168.2.0   0.0.0.0   0 32768 i
*> 192.168.12.0 0.0.0.0       0 32768 i
*> 192.168.22.0 0.0.0.0   0 32768 i
*> 192.168.24.0 0.0.0.0   0 32768 i
*> 192.168.34.0 192.168.24.4 0 0 400 i
*> 192.168.44.0 192.168.24.4      0 0 400 i
*> 192.168.222.0    0.0.0.0   0 32768 i

Total number of prefixes 7

Task 1.10
Match the output below (configuration done on R3)

R1#sh ip bgp 192.168.133.0
BGP routing table entry for 192.168.133.0/24, version 45
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Flag: 0x880
  Advertised to update-groups:
    1
  300
    192.168.13.3 from 192.168.13.3 (192.168.34.3)
  Origin IGP, metric 0, localpref 100, valid, external, best
  Community: 19660803

R1#sh ip bgp 192.168.33.0  
BGP routing table entry for 192.168.33.0/24, version 49
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Flag: 0x880
  Advertised to update-groups:
    1
  300
    192.168.13.3 from 192.168.13.3 (192.168.34.3)
  Origin IGP, metric 0, localpref 100, valid, external, best
  Community: 19660802

Task 1.11
Match the output below using distribute-lists one time (configuration done on R2)

R2#sh ip bgp 192.168.33.0
% Network not in table

Task 1.12
Configure EIGRP domain to rely only on delay in its metric calculation and match the output below

R1#sh ip route eigrp
2.0.0.0/32 is subnetted, 1 subnets
D    2.2.2.2 [90/153600] via 192.168.12.2, 00:00:38, FastEthernet0/0
D EX 192.168.3.0/24 [170/51200] via 192.168.12.2, 00:00:38, FastEthernet0/0

Task 1.13
Match the output below (do not use any filtering techniques)

R1#sh ip bgp | inc 192.168.3.0
*>i192.168.3.0   2.2.2.2   0    100   0 400 300 i




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