OSPF help
okay here is is R2 and R1 connected by ethernet.
you can ping to both sides but there is no neighbor relationship? why?
like they don't even see each other but you have ip layer access?
I have no clue why I cannot get ospf to work on these routers to
create routing tables?
R2(config-if)#
*Mar 1 22:02:30.240: OSPF: Interface FastEthernet0/0 going Up
*Mar 1 22:02:30.741: OSPF: Build router LSA for area 0, router ID 2.2.2.2, seq 0x8000000C, process 1
R2(config-if)#
*Mar 1 22:03:10.241: OSPF: end of Wait on interface FastEthernet0/0
*Mar 1 22:03:10.241: OSPF: DR/BDR election on FastEthernet0/0
*Mar 1 22:03:10.241: OSPF: Elect BDR 2.2.2.2
*Mar 1 22:03:10.241: OSPF: Elect DR 2.2.2.2
*Mar 1 22:03:10.241: OSPF: Elect BDR 0.0.0.0
*Mar 1 22:03:10.241: OSPF: Elect DR 2.2.2.2
*Mar 1 22:03:10.241: DR: 2.2.2.2 (Id) BDR: none
*Mar 1 22:03:10.742: OSPF: No full nbrs to build Net Lsa for interface FastEthernet0/0
R2(config-if)#
*Sep 6 13:05:47.194: OSPF: Interface FastEthernet0/0 going Up
*Sep 6 13:05:47.695: OSPF: Build router LSA for area 0, router ID 1.1.1.1, seq 0x8000000E, process 1
R1(config-if)#do sho ip
*Sep 6 13:06:27.196: OSPF: end of Wait on interface FastEthernet0/0
*Sep 6 13:06:27.196: OSPF: DR/BDR election on FastEthernet0/0
*Sep 6 13:06:27.196: OSPF: Elect BDR 1.1.1.1
*Sep 6 13:06:27.196: OSPF: Elect DR 1.1.1.1
*Sep 6 13:06:27.196: OSPF: Elect BDR 0.0.0.0
*Sep 6 13:06:27.196: OSPF: Elect DR 1.1.1.1
*Sep 6 13:06:27.196: DR: 1.1.1.1 (Id) BDR: none
*Sep 6 13:06:27.697: OSPF: No full nbrs to build Net Lsa for interface FastEthernet0/0
R1(config-if)#
*Sep 6 13:09:12.579: OSPF: Build router LSA for area 0, router ID 1.1.1.1, seq 0x8000000F, process 1
R1(config-if)#
you can ping to both sides but there is no neighbor relationship? why?
like they don't even see each other but you have ip layer access?
I have no clue why I cannot get ospf to work on these routers to
create routing tables?
R2(config-if)#
*Mar 1 22:02:30.240: OSPF: Interface FastEthernet0/0 going Up
*Mar 1 22:02:30.741: OSPF: Build router LSA for area 0, router ID 2.2.2.2, seq 0x8000000C, process 1
R2(config-if)#
*Mar 1 22:03:10.241: OSPF: end of Wait on interface FastEthernet0/0
*Mar 1 22:03:10.241: OSPF: DR/BDR election on FastEthernet0/0
*Mar 1 22:03:10.241: OSPF: Elect BDR 2.2.2.2
*Mar 1 22:03:10.241: OSPF: Elect DR 2.2.2.2
*Mar 1 22:03:10.241: OSPF: Elect BDR 0.0.0.0
*Mar 1 22:03:10.241: OSPF: Elect DR 2.2.2.2
*Mar 1 22:03:10.241: DR: 2.2.2.2 (Id) BDR: none
*Mar 1 22:03:10.742: OSPF: No full nbrs to build Net Lsa for interface FastEthernet0/0
R2(config-if)#
*Sep 6 13:05:47.194: OSPF: Interface FastEthernet0/0 going Up
*Sep 6 13:05:47.695: OSPF: Build router LSA for area 0, router ID 1.1.1.1, seq 0x8000000E, process 1
R1(config-if)#do sho ip
*Sep 6 13:06:27.196: OSPF: end of Wait on interface FastEthernet0/0
*Sep 6 13:06:27.196: OSPF: DR/BDR election on FastEthernet0/0
*Sep 6 13:06:27.196: OSPF: Elect BDR 1.1.1.1
*Sep 6 13:06:27.196: OSPF: Elect DR 1.1.1.1
*Sep 6 13:06:27.196: OSPF: Elect BDR 0.0.0.0
*Sep 6 13:06:27.196: OSPF: Elect DR 1.1.1.1
*Sep 6 13:06:27.196: DR: 1.1.1.1 (Id) BDR: none
*Sep 6 13:06:27.697: OSPF: No full nbrs to build Net Lsa for interface FastEthernet0/0
R1(config-if)#
*Sep 6 13:09:12.579: OSPF: Build router LSA for area 0, router ID 1.1.1.1, seq 0x8000000F, process 1
R1(config-if)#
Comments
-
APA Member Posts: 959Can you post your configs?
Looking at the debug... off the top of my head... I'd say that your network statements are incorrect...
It looks as if they can't see each others OSPF messages......as no OSPF states have changed, although I don't know how much debugging you've enabled...
- Make sure network statements are correct (IP subnet and area)
- Make sure network types are the same on interfaces (ptp or network)
CCNA | CCNA:Security | CCNP | CCIP
JNCIA:JUNOS | JNCIA:EX | JNCIS:ENT | JNCIS:SEC
JNCIS:SP | JNCIP:SP -
ConstantlyLearning Member Posts: 445And the pings were between the F0/0 interfaces of R1 and R2 yes?"There are 3 types of people in this world, those who can count and those who can't"
-
keenon Member Posts: 1,922 ■■■■□□□□□□you need to post 3 things.
1. show cdp n from each router
2. router interface configs from each router
3. routing process config from each routerBecome the stainless steel sharp knife in a drawer full of rusty spoons -
Monkerz Member Posts: 842You can ping between R1 and R2 because they both have a "connected" route in the routing table to the network they are attached to (Fa0/0 to Fa0/0).
From the debuging data, it appears that your routers are attempting to elect themselves as both the DR and BDR. As stated earlier, the routers are not seeing one another so it is probably a fat fingered network statement. (I do this alot, ) -
Forsaken_GA Member Posts: 4,024assuming they're both connected to each other via fa0/0, the network statement is probably not the issue. They're both running OSPF on that interface, and the network statement doesn't set the actual subnets to form an adjacency over, just which interfaces OSPF will participate on.
That looks like either MTU problems, or something munging multicast, but I agree, full configs on both routers would be nice, along with a mockup of the topology (ie, are they directly connected to each others fa0/0, or is there a switch in the mix?) -
amb1s1 Member Posts: 408You can ping between R1 and R2 because they both have a "connected" route in the routing table to the network they are attached to (Fa0/0 to Fa0/0).
From the debuging data, it appears that your routers are attempting to elect themselves as both the DR and BDR. As stated earlier, the routers are not seeing one another so it is probably a fat fingered network statement. (I do this alot, )
Mee too I think it is fat fingered network statement.
Is not an MTU Problem because you would see an message on the debug ip ospf adj about having the wrong MTU. You will get something like this:
OSPF: Nbr 1.1.1.1 has smaller interface MTU
or
OSPF: Nbr 2.2.2.2 as larger interface MTU
But again, we need the config to see the entire picture. -
itdaddy Member Posts: 2,089 ■■■■□□□□□□r8 ethernet to r2 ethernet to r1 frc to r3 bb1
r1 frc to r4 bb2
issue lies where r1 and r3 and r4 have ospf routing tables that can talk
to each other fine. but from r1 fastethernet on subnet 192.168.1.x /30.
nothing. it is like r2 and r8 are in their own world and there is no merging
of ospf lsa?hostname R8
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
!
resource policy
!
no network-clock-participate slot 1
no network-clock-participate wic 0
ip cef
!
!
!
!
no ip domain lookup
!
!
!
username R1 password 0 cisco
!
!
!
!
interface Loopback0
ip address 8.8.8.8 255.255.255.255
!
interface FastEthernet0/0
ip address 10.1.2.2 255.255.255.0
speed 10
full-duplex
!
interface Serial0/0
no ip address
!
interface Serial0/1
description T1 to R1
ip address 20.1.1.1 255.255.255.0
encapsulation ppp
fair-queue
service-module t1 clock source internal
service-module t1 timeslots 1-24
ppp authentication chap
!
router ospf 1
log-adjacency-changes
network 8.8.8.8 0.0.0.0 area 0
network 10.1.2.0 0.0.0.255 area 0
!
!
no ip http server
no ip http secure-server
!
!
control-plane
!
alias exec b show ip int brief
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
line vty 0 4
exec-timeout 0 0
privilege level 15
logging synchronous
login
!
!
end
R8#
hostname R2
!
boot-start-marker
boot system flash c1700-adventerprisek9-mz.124-15.T10.bin
boot-end-marker
!
!
no aaa new-model
ip cef
!
!
!
!
no ip domain lookup
ip multicast-routing
ipv6 unicast-routing
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface Loopback0
ip address 2.2.2.2 255.255.255.255
!
interface Loopback1
no ip address
shutdown
!
interface FastEthernet0/0
ip address 192.168.1.2 255.255.255.252
speed auto
full-duplex
!
interface Serial0/0
no ip address
!
interface Ethernet1/0
ip address 10.1.2.1 255.255.255.0
full-duplex
!
router ospf 1
log-adjacency-changes
network 2.2.2.2 0.0.0.0 area 0
network 10.1.2.0 0.0.0.255 area 0
network 192.168.1.0 0.0.0.3 area 0
!
no ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
alias exec b show ip int brief
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
line vty 0 4
exec-timeout 0 0
privilege level 15
password ccie
logging synchronous
login
!
end
R2#
hostname R1
!
boot-start-marker
boot-end-marker
!
enable password 7 13061E01080355
!
no aaa new-model
voice-card 2
!
ip cef
!
!
!
!
no ip domain lookup
ip multicast-routing
!
multilink bundle-name authenticated
!
!
key chain KEYCHAIN1
key 1
key-string 7 1531223F2705
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
username R8 password 7 104D000A0618
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface Loopback0
ip address 1.1.1.1 255.255.255.255
!
interface Loopback1
no ip address
shutdown
!
interface Loopback2
no ip address
shutdown
!
interface Loopback3
no ip address
shutdown
!
interface Loopback4
no ip address
shutdown
!
interface Loopback5
no ip address
shutdown
!
interface Loopback6
no ip address
shutdown
!
interface Loopback7
no ip address
shutdown
!
interface Loopback8
no ip address
shutdown
!
interface FastEthernet0/0
ip address 192.168.1.1 255.255.255.0
speed auto
full-duplex
!
interface Serial0/0
no ip address
encapsulation frame-relay IETF
!
interface Serial0/0.1 point-to-point
description direction to R3-BB1
bandwidth 1544
ip address 172.16.1.1 255.255.255.252
snmp trap link-status
frame-relay interface-dlci 181
!
interface Serial0/0.2 point-to-point
description direction to R4-BB2
bandwidth 1000
ip address 172.16.2.1 255.255.255.252
snmp trap link-status
frame-relay interface-dlci 182
!
interface Serial1/0
description T1 to R8
no ip address
encapsulation ppp
shutdown
fair-queue
service-module t1 clock source internal
service-module t1 timeslots 1-24
ppp authentication chap
!
router ospf 1
log-adjacency-changes
network 1.1.1.1 0.0.0.0 area 0
network 172.16.1.0 0.0.0.255 area 0
network 172.16.2.0 0.0.0.255 area 0
network 192.168.1.0 0.0.0.255 area 0
!
no ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
!
voice-port 2/0
!
voice-port 2/1
!
!
!
!
!
!
alias exec b show ip int brief
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
line vty 0 4
exec-timeout 0 0
privilege level 15
password 7 104D0A1000
logging synchronous
login
!
end
R1#
hostname R3_BB1
!
boot-start-marker
boot system flash c1700-adventerprisek9-mz.124-15.T10.bin
boot-end-marker
!
!
no aaa new-model
ip cef
!
!
!
!
no ip domain lookup
ip multicast-routing
!
multilink bundle-name authenticated
!
!
key chain KEYCHAIN1
key 1
key-string CISCO
key chain KEYCHAIN2
key 1
key-string CISCO
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface Loopback0
ip address 3.3.3.3 255.255.255.255
!
interface Loopback1
no ip address
!
interface FastEthernet0/0
ip address 172.16.3.2 255.255.255.0
shutdown
speed auto
!
interface Serial0/0
no ip address
encapsulation frame-relay IETF
!
interface Serial0/0.1 point-to-point
description direction to R4-BB2
ip address 10.1.1.1 255.255.255.252
snmp trap link-status
frame-relay interface-dlci 881
!
interface Serial0/0.2 point-to-point
description direction to R1
ip address 172.16.1.2 255.255.255.252
snmp trap link-status
frame-relay interface-dlci 811
!
interface Serial1/0
no ip address
!
router ospf 1
log-adjacency-changes
network 3.3.3.3 0.0.0.0 area 0
network 10.1.1.0 0.0.0.255 area 0
network 172.16.1.0 0.0.0.255 area 0
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
alias exec fr frame-relay map ip 10.2.2.1 203 broadcaste (static mapping)
alias exec b sh ip int brief
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
line vty 0 4
exec-timeout 0 0
privilege level 15
password ccie
logging synchronous
login
!
end
R3_BB1#
hostname R4_BB2
!
boot-start-marker
boot system flash
boot system flash c1700-adventerprisek9-mz.124-15.T10.bin
boot-end-marker
!
!
no aaa new-model
ip cef
!
!
!
!
no ip domain lookup
ip multicast-routing
ipv6 unicast-routing
!
multilink bundle-name authenticated
!
!
key chain KEYCHAIN1
key 1
key-string CISCO
key chain KEYCHAIN2
key 1
key-string CISCO
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface Loopback0
ip address 4.4.4.4 255.255.255.255
!
interface Loopback1
no ip address
!
interface FastEthernet0/0
ip address 172.16.3.3 255.255.255.0
shutdown
speed auto
!
interface Serial0/0
no ip address
encapsulation frame-relay IETF
!
interface Serial0/0.1 point-to-point
description direction to R3-BB1
ip address 10.1.1.2 255.255.255.252
ip pim sparse-dense-mode
snmp trap link-status
frame-relay interface-dlci 882
!
interface Serial0/0.2 point-to-point
description direction to R1
ip address 172.16.2.2 255.255.255.252
snmp trap link-status
frame-relay interface-dlci 821
!
interface Serial1/0
no ip address
shutdown
!
router ospf 1
log-adjacency-changes
network 4.4.4.4 0.0.0.0 area 0
network 10.1.1.0 0.0.0.255 area 0
network 172.16.2.0 0.0.0.255 area 0
!
ip default-gateway 192.168.15.1
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
alias exec b sh ip int brief
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
line vty 0 4
exec-timeout 0 0
privilege level 15
password ccie
logging synchronous
login
!
end
R4_BB2#
__________________
itdaddy
CCNA, A+, MCP
BS in Computer Science
(WIP:CCNP, CCSP, CCVP)
itdaddyView Public ProfileSend a private message to itdaddyFind More Posts by itdaddyAdd itdaddy to Your Contacts
Quick ReplyMessage:
hostname R8
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
!
resource policy
!
no network-clock-participate slot 1
no network-clock-participate wic 0
ip cef
!
!
!
!
no ip domain lookup
!
!
!
username R1 password 0 cisco
!
!
!
!
interface Loopback0
ip address 8.8.8.8 255.255.255.255
!
interface FastEthernet0/0
ip address 10.1.2.2 255.255.255.0
speed 10
full-duplex
!
interface Serial0/0
no ip address
!
interface Serial0/1
description T1 to R1
ip address 20.1.1.1 255.255.255.0
encapsulation ppp
fair-queue
service-module t1 clock source internal
service-module t1 timeslots 1-24
ppp authentication chap
!
router ospf 1
log-adjacency-changes
network 8.8.8.8 0.0.0.0 area 0
network 10.1.2.0 0.0.0.255 area 0
!
!
no ip http server
no ip http secure-server
!
!
control-plane
!
alias exec b show ip int brief
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
line vty 0 4
exec-timeout 0 0
privilege level 15
logging synchronous
login
!
!
end
R8#
hostname R2
!
boot-start-marker
boot system flash c1700-adventerprisek9-mz.124-15.T10.bin
boot-end-marker
!
!
no aaa new-model
ip cef
!
!
!
!
no ip domain lookup
ip multicast-routing
ipv6 unicast-routing
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface Loopback0
ip address 2.2.2.2 255.255.255.255
!
interface Loopback1
no ip address
shutdown
!
interface FastEthernet0/0
ip address 192.168.1.2 255.255.255.252
speed auto
full-duplex
!
interface Serial0/0
no ip address
!
interface Ethernet1/0
ip address 10.1.2.1 255.255.255.0
full-duplex
!
router ospf 1
log-adjacency-changes
network 2.2.2.2 0.0.0.0 area 0
network 10.1.2.0 0.0.0.255 area 0
network 192.168.1.0 0.0.0.3 area 0
!
no ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
alias exec b show ip int brief
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
line vty 0 4
exec-timeout 0 0
privilege level 15
password ccie
logging synchronous
login
!
end
R2#
hostname R1
!
boot-start-marker
boot-end-marker
!
enable password 7 13061E01080355
!
no aaa new-model
voice-card 2
!
ip cef
!
!
!
!
no ip domain lookup
ip multicast-routing
!
multilink bundle-name authenticated
!
!
key chain KEYCHAIN1
key 1
key-string 7 1531223F2705
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
username R8 password 7 104D000A0618
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface Loopback0
ip address 1.1.1.1 255.255.255.255
!
interface Loopback1
no ip address
shutdown
!
interface Loopback2
no ip address
shutdown
!
interface Loopback3
no ip address
shutdown
!
interface Loopback4
no ip address
shutdown
!
interface Loopback5
no ip address
shutdown
!
interface Loopback6
no ip address
shutdown
!
interface Loopback7
no ip address
shutdown
!
interface Loopback8
no ip address
shutdown
!
interface FastEthernet0/0
ip address 192.168.1.1 255.255.255.0
speed auto
full-duplex
!
interface Serial0/0
no ip address
encapsulation frame-relay IETF
!
interface Serial0/0.1 point-to-point
description direction to R3-BB1
bandwidth 1544
ip address 172.16.1.1 255.255.255.252
snmp trap link-status
frame-relay interface-dlci 181
!
interface Serial0/0.2 point-to-point
description direction to R4-BB2
bandwidth 1000
ip address 172.16.2.1 255.255.255.252
snmp trap link-status
frame-relay interface-dlci 182
!
interface Serial1/0
description T1 to R8
no ip address
encapsulation ppp
shutdown
fair-queue
service-module t1 clock source internal
service-module t1 timeslots 1-24
ppp authentication chap
!
router ospf 1
log-adjacency-changes
network 1.1.1.1 0.0.0.0 area 0
network 172.16.1.0 0.0.0.255 area 0
network 172.16.2.0 0.0.0.255 area 0
network 192.168.1.0 0.0.0.255 area 0
!
no ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
!
voice-port 2/0
!
voice-port 2/1
!
!
!
!
!
!
alias exec b show ip int brief
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
line vty 0 4
exec-timeout 0 0
privilege level 15
password 7 104D0A1000
logging synchronous
login
!
end
R1#
hostname R3_BB1
!
boot-start-marker
boot system flash c1700-adventerprisek9-mz.124-15.T10.bin
boot-end-marker
!
!
no aaa new-model
ip cef
!
!
!
!
no ip domain lookup
ip multicast-routing
!
multilink bundle-name authenticated
!
!
key chain KEYCHAIN1
key 1
key-string CISCO
key chain KEYCHAIN2
key 1
key-string CISCO
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface Loopback0
ip address 3.3.3.3 255.255.255.255
!
interface Loopback1
no ip address
!
interface FastEthernet0/0
ip address 172.16.3.2 255.255.255.0
shutdown
speed auto
!
interface Serial0/0
no ip address
encapsulation frame-relay IETF
!
interface Serial0/0.1 point-to-point
description direction to R4-BB2
ip address 10.1.1.1 255.255.255.252
snmp trap link-status
frame-relay interface-dlci 881
!
interface Serial0/0.2 point-to-point
description direction to R1
ip address 172.16.1.2 255.255.255.252
snmp trap link-status
frame-relay interface-dlci 811
!
interface Serial1/0
no ip address
!
router ospf 1
log-adjacency-changes
network 3.3.3.3 0.0.0.0 area 0
network 10.1.1.0 0.0.0.255 area 0
network 172.16.1.0 0.0.0.255 area 0
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
alias exec fr frame-relay map ip 10.2.2.1 203 broadcaste (static mapping)
alias exec b sh ip int brief
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
line vty 0 4
exec-timeout 0 0
privilege level 15
password ccie
logging synchronous
login
!
end
R3_BB1#
hostname R4_BB2
!
boot-start-marker
boot system flash
boot system flash c1700-adventerprisek9-mz.124-15.T10.bin
boot-end-marker
!
!
no aaa new-model
ip cef
!
!
!
!
no ip domain lookup
ip multicast-routing
ipv6 unicast-routing
!
multilink bundle-name authenticated
!
!
key chain KEYCHAIN1
key 1
key-string CISCO
key chain KEYCHAIN2
key 1
key-string CISCO
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface Loopback0
ip address 4.4.4.4 255.255.255.255
!
interface Loopback1
no ip address
!
interface FastEthernet0/0
ip address 172.16.3.3 255.255.255.0
shutdown
speed auto
!
interface Serial0/0
no ip address
encapsulation frame-relay IETF
!
interface Serial0/0.1 point-to-point
description direction to R3-BB1
ip address 10.1.1.2 255.255.255.252
ip pim sparse-dense-mode
snmp trap link-status
frame-relay interface-dlci 882
!
interface Serial0/0.2 point-to-point
description direction to R1
ip address 172.16.2.2 255.255.255.252
snmp trap link-status
frame-relay interface-dlci 821
!
interface Serial1/0
no ip address
shutdown
!
router ospf 1
log-adjacency-changes
network 4.4.4.4 0.0.0.0 area 0
network 10.1.1.0 0.0.0.255 area 0
network 172.16.2.0 0.0.0.255 area 0
!
ip default-gateway 192.168.15.1
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
alias exec b sh ip int brief
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
line vty 0 4
exec-timeout 0 0
privilege level 15
password ccie
logging synchronous
login
!
end
R4_BB2#
__________________
itdaddy
CCNA, A+, MCP
BS in Computer Science
(WIP:CCNP, CCSP, CCVP) -
amb1s1 Member Posts: 408Are you doing this lab on GNS3? You config look good. Can you do debug ip ospf event
-
amb1s1 Member Posts: 408Found it, the problem is that to be able to established a neighbor with a neighbors the interfaces got to be in the same subnet. YOu have router2 interface Fa0/0 on /30 subnet
R2 --- interface FastEthernet0/0 ip address 192.168.1.2 255.255.255.252 speed auto full-duplex
and router 1 on a /24 subnetinterface FastEthernet0/0 ip address 192.168.1.1 255.255.255.0 speed auto full-duplex
To solve this problem you either move R1 to a /30 subnet or r2 to /24 subnet. -
Forsaken_GA Member Posts: 4,024your netmasks are mismatched between r1 and r2 on the fa0/0 interfaces. r2 has it configured as a /30, r1 has it configured as a /24
edit: damn, little too slow -
DPG Member Posts: 780 ■■■■■□□□□□Your IP subnets and network statements are mismatched.
[B]R1[/B] interface FastEthernet0/0 ip address 192.168.1.1 255.255.255.[B]0[/B] network 192.168.1.0 0.0.0.[B]255[/B] area 0 [B]R2[/B] interface FastEthernet0/0 ip address 192.168.1.2 255.255.255.[B]252[/B] network 192.168.1.0 0.0.0.[B]3[/B] area 0
They interfaces need to have the subnet mask and the network statements need to have the same wildcard mask in order for the adjacency to form. -
Forsaken_GA Member Posts: 4,024You're also going to want to adjust the wildcard masks for the network statements to be consistent, particularly if your goal is for these links to be a /30. ie, you may not necessarily want the router currently configured as a /24 to match on a 24 bit mask if your goal is to only advertise that /30, if you leave it that way, and you configured anything else in the 192.168.1.0/24 range, say for another point to point link, then that subnet would automatically get injected into ospf.
Personally, I prefer to explicitly match the interface in the network statement if I'm using it to configure OSPF (I usually enable ospf at the interface level).
of course, I also define passive-interface by default as well. Then I explicitly no passive-interface the interfaces I do want running OSPF, so I make it really hard to screw up and accidentally add an interface to the routing protocol. -
itdaddy Member Posts: 2,089 ■■■■□□□□□□OMG..you are right I just didnt see that aahahha wow I should have gone thru the basics step by step I just kep relying on the ping since it did work
but I completely see what you see fixing this tomorrow will let you know. I was look at timers and they looked good and I was like what the heck is it hahah thanks guys I willl look and fix it tomorrow morning and report back my success. thanks so much for your keen site. yeah I can sleep now.
what a cool exercise in troubleshooting wow! I should have looked at each factor. great exercise....see you tomorrow... -
Forsaken_GA Member Posts: 4,024OMG..you are right I just didnt see that aahahha wow I should have gone thru the basics step by step I just kep relying on the ping since it did work
but I completely see what you see fixing this tomorrow will let you know. I was look at timers and they looked good and I was like what the heck is it hahah thanks guys I willl look and fix it tomorrow morning and report back my success. thanks so much for your keen site. yeah I can sleep now.
what a cool exercise in troubleshooting wow! I should have looked at each factor. great exercise....see you tomorrow...
devil's in the details. I cannot explain how many times I've run into problems that at first blush, everything seemed correct, and was going off on all kinds of tangents trying to figure it out, and it turned out to be something stupid like a typo.
When in doubt, always bet on stupid. -
APA Member Posts: 959See what happens when you post configs up....
Definitely explains why they weren't seeing each other.... perfect example of always thoroughly checking your config before applying it.
CCNA | CCNA:Security | CCNP | CCIP
JNCIA:JUNOS | JNCIA:EX | JNCIS:ENT | JNCIS:SEC
JNCIS:SP | JNCIP:SP -
itdaddy Member Posts: 2,089 ■■■■□□□□□□oh yeah you guys are awesome. man I feel so dumb hahaha
yeah works great!!thank you for being my eyeballs!R1#sh ip ospf neigh
Neighbor ID Pri State Dead Time Address Interface
2.2.2.2 1 FULL/DR 00:00:38 192.168.1.2 FastEthernet0/0
4.4.4.4 0 FULL/ - 00:00:36 172.16.2.2 Serial0/0.2
3.3.3.3 0 FULL/ - 00:00:35 172.16.1.2 Serial0/0.1
R1#