From: Edwards, Andrew M (andrew.m.edwards@boeing.com)
Date: Thu Feb 12 2004 - 22:00:40 GMT-3
You shouldn't need to worry about the MTU because the router will encapsulate via ethernet adding the 18 bytes so the MTU will match 1518=1518.
If you have the vlan125 helo-interval set to 1 however, the routers default OSPF helo interval should be 10 seconds so they will never form an adjacency on vlan125. Make sure to do a debug IP ospf adjacency and watch the logs for helo and dead intervals during the adjecency formation.
andy
-----Original Message-----
From: Charles T. Alexander [mailto:charles.t.alexander@verizon.net]
Sent: Thursday, February 12, 2004 2:32 PM
To: ccielab@groupstudy.com
Subject: OSPF Adjancies
I am having problems forming ospf neighbors on the catayst below for Vlan 125. I have also attached one of the routers which is trying to get adjacencies.
-----------------------------------------------------------
cat#r
Building configuration...
Current configuration : 6055 bytes
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname cat
!
logging buffered 10000 debugging
enable password radnor
!
username Tess privilege 15 password 0 Abbott
ip subnet-zero
ip routing
no ip domain-lookup
ip domain-name ctasys.net
!
!
!
key chain chucko3
key 1
key-string ctasta3
key chain chucko50
key 1
key-string ctasta50
key chain cta_vlanc
key 1
key-string cta_vlanc
spanning-tree extend system-id
system mtu 1518
!
!
!
interface Loopback0
ip address 137.10.10.1 255.255.255.0
ip ospf network point-to-point
!
interface Loopback1
ip address 137.10.20.1 255.255.255.0
!
interface Port-channel1
switchport trunk encapsulation dot1q
switchport mode trunk
no ip address
!
interface FastEthernet0/1
switchport access vlan 125
no ip address
!
interface FastEthernet0/2
switchport access vlan 125
no ip address
!
interface FastEthernet0/3
no ip address
!
interface FastEthernet0/4
switchport access vlan 74
no ip address
!
interface FastEthernet0/5
switchport access vlan 50
no ip address
storm-control broadcast level 0.00
!
interface FastEthernet0/6
switchport access vlan 74
no ip address
!
interface FastEthernet0/7
switchport access vlan 74
no ip address
!
interface FastEthernet0/8
switchport access vlan 98
no ip address
!
interface FastEthernet0/9
switchport access vlan 98
no ip address
!
interface FastEthernet0/10
no ip address
!
interface FastEthernet0/11
switchport access vlan 125
no ip address
!
interface FastEthernet0/12
switchport access vlan 98
no ip address
!
interface FastEthernet0/13
switchport access vlan 192
no ip address
!
interface FastEthernet0/14
switchport access vlan 74
no ip address
!
interface FastEthernet0/15
switchport access vlan 74
no ip address
!
interface FastEthernet0/16
switchport access vlan 125
no ip address
!
interface FastEthernet0/17
switchport access vlan 200
no ip address
no keepalive
!
interface FastEthernet0/18
description test port cta
bandwidth 10000
no ip address
speed 10
!
interface FastEthernet0/19
switchport access vlan 100
no ip address
!
interface FastEthernet0/20
no ip address
!
interface FastEthernet0/21
no ip address
!
interface FastEthernet0/22
no ip address
!
interface FastEthernet0/23
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,50,74,98,100,125,192,200,1002-1005
switchport mode trunk
no ip address
channel-group 1 mode desirable
!
interface FastEthernet0/24
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,50,74,98,100,125,192,200,1002-1005
switchport mode trunk
no ip address
channel-group 1 mode desirable
!
interface GigabitEthernet0/1
no ip address
!
interface GigabitEthernet0/2
no ip address
!
interface Vlan1
no ip address
!
interface Vlan50
description Vlan B
ip address 137.10.50.10 255.255.255.0
ip rip authentication mode md5
ip rip authentication key-chain chucko50
!
interface Vlan74
description Vlan C
ip address 137.10.74.10 255.255.255.192
ip helper-address 137.10.200.1
ip authentication mode eigrp 100 md5
ip authentication key-chain eigrp 100 cta_vlanc
!
interface Vlan125
description Vlan A
ip address 137.10.125.10 255.255.255.0
ip ospf hello-interval 1
!
interface Vlan192
description Vlan E
ip address 192.168.30.10 255.255.255.0
no ip unreachables
ip rip authentication mode md5
ip rip authentication key-chain chucko3
!
interface Vlan200
description Vlan F
ip address 137.10.200.10 255.255.255.192
!
router eigrp 100
redistribute ospf 1 metric 10000 1000 255 1 1500
redistribute rip metric 10000 1000 255 1 1500
network 137.10.74.0 0.0.0.63
no auto-summary
no eigrp log-neighbor-changes
!
router ospf 1
router-id 137.10.10.1
log-adjacency-changes detail
timers spf 0 0
redistribute eigrp 100 metric-type 1 subnets
redistribute rip metric-type 1 subnets
network 137.10.10.0 0.0.0.255 area 0
network 137.10.125.0 0.0.0.255 area 0
distance 171
distance 110 0.0.0.0 255.255.255.255 2
!
router rip
version 2
timers basic 40 120 180 240
redistribute eigrp 100 metric 1
redistribute ospf 1 metric 1
passive-interface default
no passive-interface Vlan50
no passive-interface Vlan192
no passive-interface Vlan200
network 137.10.0.0
network 192.168.30.0
default-information originate route-map def-to-bb3 distribute-list prefix just27 in Vlan192 distance 171 distance 169 137.10.50.10 0.0.0.0 5 distance 169 137.10.50.5 0.0.0.0 5 no auto-summary ! ip classless ip http server ip http authentication local ! ip access-list standard def-bb3 permit 137.10.50.0 0.0.0.255 permit 137.10.74.0 0.0.0.63 permit 137.10.200.0 0.0.0.63 permit 137.10.125.0 0.0.0.255 ! ! ! ip prefix-list just27 seq 5 permit 192.178.0.0/16 ge 27 ! logging 137.10.125.101 access-list 2 permit 137.10.2.0 0.0.0.255 access-list 2 permit 137.10.1.0 0.0.0.255 access-list 2 permit 137.10.25.0 0.0.0.3 access-list 2 permit 192.176.0.0 0.0.3.0 access-list 5 permit 137.10.2.0 0.0.0.255 access-list 5 permit 137.10.1.0 0.0.0.255 access-list 5 permit 137.10.5.0 0.0.0.255 access-list 5 permit 137.10.10.0 0.0.0.255 access-list 5 permit 137.10.25.0 0.0.0.3 access-list 5 permit 137.10.125.0 0.0.0.255 access-list 5 permit 137.10.45.0 0.0.0.15 access-list 5 permit 192.176.!
0.0 0.0.3.0 access-list 5 permit 205.1.1.0 0.0.0.127 arp 137.10.50.5 00e0.1ef8.0961 ARPA route-map def-to-bb3 permit 10 match ip address def-bb3 set interface Vlan192 ! snmp-server engineID local 800000090300000BBE9D5301 snmp-server location Bryn Mawr snmp-server contact Charlie alias exec r show run alias exec c config t alias exec i show ip route alias exec bs show ip bgp summary alias exec u undebug all alias exec w write alias exec b show ip bgp alias exec s show ip int brief ! line con 0 exec-timeout 0 0 logging synchronous escape-character 27 line vty 0 4 exec-timeout 0 0 password bp login line vty 5 15 exec-timeout 0 0 password bp login ! ! monitor session 1 source vlan 125 rx monitor session 1 destination remote vlan 100 reflector-port Fa0/23 end
cat#
----------------------------------------------------------
r2#r
Building configuration...
Current configuration : 2566 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r2
!
boot system tftp r2-ios-image 137.10.74.62
logging buffered 10000 debugging
enable password radnor
!
username r5 password 0 ctasta
ip subnet-zero
no ip domain-lookup
ip host r1 137.10.125.1
!
isdn switch-type basic-ni
!
!
!
interface Loopback0
ip address 137.10.2.2 255.255.255.0
ip router isis
!
interface Ethernet0
backup delay 5 60
backup interface BRI0
ip address 137.10.125.2 255.255.255.0
ip ospf hello-interval 1
ip ospf priority 0
!
interface Serial0
ip address 137.10.100.2 255.255.255.224
ip router isis
encapsulation frame-relay
frame-relay map clns 104 broadcast
frame-relay map ip 137.10.100.2 104
frame-relay map ip 137.10.100.4 104 broadcast
frame-relay map ip 137.10.100.6 104 broadcast
no frame-relay inverse-arp
frame-relay lmi-type ansi
!
interface Serial1
no ip address
shutdown
!
interface BRI0
ip address 137.10.25.2 255.255.255.252
encapsulation ppp
dialer map ip 137.10.25.1 name r5 broadcast 4082222222
dialer load-threshold 99 either
dialer-group 1
isdn switch-type basic-ni
isdn spid1 40811111111
isdn spid2 40811111112
no peer neighbor-route
no cdp enable
ppp authentication chap callin
ppp multilink
hold-queue 25 in
!
router ospf 1
router-id 137.10.2.2
log-adjacency-changes
timers lsa-group-pacing 600
redistribute connected metric 10 subnets route-map c2o redistribute isis level-2 subnets network 137.10.25.0 0.0.0.3 area 1 network 137.10.125.0 0.0.0.255 area 0 ! router isis
redistribute ospf 1
distance 109 137.10.1.1 0.0.0.0 2
net 49.0102.2222.2222.2222.00
is-type level-2-only
!
ip classless
ip http server
ip ospf name-lookup
ip pim bidir-enable
!
access-list 1 permit 137.10.2.0
access-list 1 permit 137.10.100.0 0.0.0.31
access-list 2 permit 137.10.6.0
access-list 2 permit 137.10.5.0
access-list 2 permit 137.10.45.0 0.0.0.15
access-list 2 permit 205.1.1.0 0.0.0.127
access-list 101 permit icmp any any
access-list 101 permit ip any host 137.10.125.10
access-list 101 permit tcp any any eq bgp
access-list 101 permit ospf any any
dialer-list 1 protocol ip list 101
route-map c2o permit 10
match ip address 1
!
!
alias exec i show ip route
alias exec r show run
alias exec c config t
alias exec u undebug all
alias exec b show ip bgp
alias exec bs show ip bgp sum
alias exec s show ip int brief
alias exec w write
!
line con 0
exec-timeout 0 0
logging synchronous
escape-character 27
line aux 0
line vty 0 4
exec-timeout 0 0
password bp
login
!
end
r2#
This archive was generated by hypermail 2.1.4 : Fri Mar 05 2004 - 07:13:49 GMT-3