Hello All,
am trying to configure BGP as attached diagram and am able to see routes from CSR19-192.168.0.0(Internet by NAT) , but am not to ping from EBPG Routers CSR12/RTR17. current configuration is mentioned below . Thanks for your tips so that am able to ping gateway on CSR19 from other EBGP Routers.
*********************************************************************
CSR19#show ip int brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet1 20.10.195.19 YES NVRAM up up
GigabitEthernet2 192.168.195.1 YES NVRAM up up
GigabitEthernet3 unassigned YES NVRAM up up
GigabitEthernet4 192.168.0.19 YES NVRAM up up
Loopback0 19.19.19.19 YES NVRAM up up
CSR19# show running-config | sec router bgp
router bgp 2300
bgp router-id 19.19.19.19
bgp log-neighbor-changes
network 19.19.19.19 mask 255.255.255.255
network 20.10.195.0 mask 255.255.255.0
network 192.168.0.0
redistribute static
neighbor 20.10.195.15 remote-as 1333
default-information originate
CSR19#ping 8.8.8.8
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 8.8.8.8, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 11/18/28 ms
*********************************************************************
RTR15#ping 8.8.8.8
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 8.8.8.8, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 9/20/31 ms
RTR15#ping 192.168.0.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/4/10 ms
RTR15#show running-config | sec router bgp
router bgp 1333
bgp router-id 15.15.15.15
bgp log-neighbor-changes
network 15.15.15.15 mask 255.255.255.255
neighbor 10.10.95.95 remote-as 2300
neighbor 20.10.195.19 remote-as 2300
neighbor 24.24.57.17 remote-as 3300
neighbor 28.28.158.18 remote-as 3300
neighbor 202.10.25.12 remote-as 1300
neighbor 202.10.25.12 next-hop-self
maximum-paths 20
*********************************************************************
CSR12#show running-config | sec router
router bgp 1300
bgp router-id 12.12.12.12
bgp log-neighbor-changes
network 10.10.123.0 mask 255.255.255.0
network 10.10.129.0 mask 255.255.255.0
network 10.10.133.0 mask 255.255.255.0
network 12.12.12.12 mask 255.255.255.255
neighbor 10.10.128.8 remote-as 65
neighbor 10.10.129.9 remote-as 65
neighbor 102.10.124.4 remote-as 400
neighbor 102.10.124.4 next-hop-self
neighbor 202.10.25.15 remote-as 1333
neighbor 202.10.25.15 next-hop-self
neighbor 202.10.123.3 remote-as 300
neighbor 202.10.123.3 next-hop-self
maximum-paths 20
CSR12#ping 8.8.8.8
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 8.8.8.8, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
*********************************************************************
RTR15#show ip bgp
BGP table version is 118, local router ID is 15.15.15.15
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
t secondary path,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
*> 0.0.0.0 20.10.195.19 0 0 2300 ?
*> 1.1.1.1/32 202.10.25.12 0 1300 300 100 i
*> 2.2.2.2/32 202.10.25.12 0 1300 300 100 200 i
*> 3.3.3.3/32 202.10.25.12 0 1300 300 i
*> 4.4.4.4/32 202.10.25.12 0 1300 400 i
*> 5.5.5.5/32 202.10.25.12 0 1300 400 500 i
*> 10.10.129.0/24 202.10.25.12 0 0 1300 i
*> 12.12.12.12/32 202.10.25.12 0 0 1300 i
*> 14.14.14.14/32 202.10.25.12 0 1300 300 100 200 2200 i
*> 15.15.15.15/32 0.0.0.0 0 32768 i
*> 16.16.16.16/32 202.10.25.12 0 1300 300 1400 1444 i
Network Next Hop Metric LocPrf Weight Path
*> 17.17.17.17/32 24.24.57.17 0 0 3300 i
*> 18.18.18.18/32 28.28.158.18 0 0 3300 i
*> 19.19.19.19/32 20.10.195.19 0 0 2300 i
r> 20.10.195.0/24 20.10.195.19 0 0 2300 i
*> 24.24.24.24/32 202.10.25.12 0 1300 300 100 200 2200 i
*> 42.42.42.42/32 202.10.25.12 0 1300 300 100 200 2200 i
*> 95.95.95.95/32 10.10.95.95 0 0 2300 i
*> 192.168.0.0 20.10.195.19 0 0 2300 i
*> 192.168.10.0 202.10.25.12 0 1300 300 100 i
*> 192.168.33.33/32 202.10.25.12 0 1300 300 1400 33 i
*> 192.168.42.0 202.10.25.12 0 1300 300 100 200 2200 i
*> 192.168.44.44/32 202.10.25.12 0 1300 300 1400 44 i
*m 192.168.78.0 24.24.57.17 0 0 3300 i
*> 28.28.158.18 0 0 3300 i
****************************************************************************
CSR12# show ip bgp 192.168.0.0
BGP routing table entry for 192.168.0.0/24, version 37
Paths: (1 available, best #1, table default)
Multipath: eBGP
Advertised to update-groups:
3 4
Refresh Epoch 1
1333 2300
202.10.25.15 from 202.10.25.15 (15.15.15.15)
Origin IGP, localpref 100, valid, external, best
rx pathid: 0, tx pathid: 0x0
Updated on Jun 15 2025 12:34:12 UTC
*********************************************************************
RTR17#show ip bgp
BGP table version is 116, local router ID is 17.17.17.17
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
t secondary path,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
*> 0.0.0.0 24.24.57.15 0 1333 2300 ?
*> 1.1.1.1/32 24.24.57.15 0 1333 1300 300 100 i
*> 2.2.2.2/32 24.24.57.15 0 1333 1300 300 100 200 i
*> 3.3.3.3/32 24.24.57.15 0 1333 1300 300 i
*> 4.4.4.4/32 24.24.57.15 0 1333 1300 400 i
*> 5.5.5.5/32 24.24.57.15 0 1333 1300 400 500 i
*> 10.10.129.0/24 24.24.57.15 0 1333 1300 i
*> 12.12.12.12/32 24.24.57.15 0 1333 1300 i
*> 14.14.14.14/32 24.24.57.15 0 1333 1300 300 100 200 2200 i
Network Next Hop Metric LocPrf Weight Path
*> 15.15.15.15/32 24.24.57.15 0 0 1333 i
*> 16.16.16.16/32 24.24.57.15 0 1333 1300 300 1400 1444 i
*> 17.17.17.17/32 0.0.0.0 0 32768 i
*> 19.19.19.19/32 24.24.57.15 0 1333 2300 i
*> 20.10.195.0/24 24.24.57.15 0 1333 2300 i
*> 24.24.24.24/32 24.24.57.15 0 1333 1300 300 100 200 2200 i
*> 42.42.42.42/32 24.24.57.15 0 1333 1300 300 100 200 2200 i
*> 95.95.95.95/32 24.24.57.15 0 1333 2300 i
*> 192.168.0.0 24.24.57.15 0 1333 2300 i
*> 192.168.10.0 24.24.57.15 0 1333 1300 300 100 i
*> 192.168.33.33/32 24.24.57.15 0 1333 1300 300 1400 33 i
*> 192.168.42.0 24.24.57.15 0 1333 1300 300 100 200 2200 i
*> 192.168.44.44/32 24.24.57.15 0 1333 1300 300 1400 44 i
*> 192.168.78.0 0.0.0.0 0 32768 i
RTR17#ping 192.168.0.19
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.19, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
RTR17#ping 8.8.8.8
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 8.8.8.8, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
********************************************************************
