From: Joseph Brunner (joe@affirmedsystems.com)
Date: Sun Oct 07 2007 - 22:05:24 ART
A tunnel defaults to ospf network type POINT_TO_POINT; my answer is in the
config here for R2. Ignore other parts which don't matter... But you see
where I'm going with this... Multicast & Ipv6 comes later...
My wording was very very similar to how this task would be worded in the
lab. You are forced to consider
-the default OSPF network type with physical (main) interface frame-relay
(non-broadcast)
-That this has a DR
-But you can't use a DR!
-Oh, sh*t I can't change the network type...
If faced with a scenario you can't overcome you have to look forward fast to
see how many more points you risk by not SOLVING BY ANY MEANS POSSIBLE...
I.E there may be 3 QOS, 3 MULTICAST, and 3 BGP points at stake from this
OSPF configuration... So do you just do what you can (run neighbor commands
with non_broadcast, and have a DR, but don't break the FRAME-RELAY task
requirements...) and make the 9 easy points later? Maybe come back to this
after lunch? Strategy, strategy, strategy...
Check it...
rack1r2#sh run
Building configuration...
Current configuration : 2003 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname rack1r2
!
boot-start-marker
boot-end-marker
!
no logging console
enable secret 5 $1$vY/X$.P5pA3AI0m7dMS8DOSmnK1
!
memory-size iomem 30
aaa new-model
!
!
aaa authentication login default line none
aaa session-id common
ip subnet-zero
ip cef
!
!
!
no ip domain lookup
ip audit po max-events 100
!
!
!
key chain EIGRP
key 1
key-string 7 01302F377824
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface Loopback0
ip address 160.1.2.2 255.255.255.255
!
interface Tunnel23
ip unnumbered Serial0/0
tunnel source 1.1.234.2
tunnel destination 1.1.234.3
!
interface Tunnel24
ip unnumbered Serial0/0
tunnel source 1.1.234.2
tunnel destination 1.1.234.4
!
interface FastEthernet0/0
ip address 1.1.22.12 255.255.255.0
ip ospf mtu-ignore
duplex auto
speed auto
!
interface Serial0/0
ip address 1.1.234.2 255.255.255.0
encapsulation frame-relay
frame-relay map ip 1.1.234.3 203
frame-relay map ip 1.1.234.4 204
no frame-relay inverse-arp
!
interface FastEthernet0/1
no ip address
duplex auto
speed auto
!
interface FastEthernet0/1.23
encapsulation dot1Q 23 native
ip address 1.1.23.2 255.255.255.0
!
interface FastEthernet0/1.103
encapsulation dot1Q 103
ip address 150.1.3.2 255.255.255.0
ip authentication mode eigrp 100 md5
ip authentication key-chain eigrp 100 EIGRP
!
router eigrp 100
network 1.1.23.2 0.0.0.0
network 150.1.3.2 0.0.0.0
no auto-summary
!
router ospf 1
router-id 160.1.2.2
log-adjacency-changes
area 99 nssa no-summary
redistribute connected subnets route-map CONN->OSPF
redistribute eigrp 100 metric-type 1 subnets tag 2
network 1.1.22.12 0.0.0.0 area 99
network 1.1.234.2 0.0.0.0 area 0
!
ip classless
!
ip http server
no ip http secure-server
!
!
route-map CONN->OSPF permit 10
match interface Loopback0
!
!
!
!
!
!
!
!
!
!
line con 0
exec-timeout 0 0
password 7 13061E010803
line aux 0
line vty 0 4
password 7 030752180500
!
End
rack1r2# sh ip ospf int
Tunnel24 is up, line protocol is up
Internet Address 0.0.0.0/0, Area 0
Process ID 1, Router ID 160.1.2.2, Network Type POINT_TO_POINT, Cost:
11111
Transmit Delay is 1 sec, State POINT_TO_POINT,
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:04
Index 3/3, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 12
Last flood scan time is 0 msec, maximum is 4 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 160.1.4.4
Suppress hello for 0 neighbor(s)
Tunnel23 is up, line protocol is up
Internet Address 0.0.0.0/0, Area 0
Process ID 1, Router ID 160.1.2.2, Network Type POINT_TO_POINT, Cost:
11111
Transmit Delay is 1 sec, State POINT_TO_POINT,
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:04
Index 2/2, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 12
Last flood scan time is 0 msec, maximum is 4 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 160.1.3.3
Suppress hello for 0 neighbor(s)
Serial0/0 is up, line protocol is up
Internet Address 1.1.234.2/24, Area 0
Process ID 1, Router ID 160.1.2.2, Network Type NON_BROADCAST, Cost: 1785
Transmit Delay is 1 sec, State DR, Priority 1
Designated Router (ID) 160.1.2.2, Interface address 1.1.234.2
No backup designated router on this network
Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5
oob-resync timeout 120
Hello due in 00:00:23
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 0, maximum is 0
Last flood scan time is 0 msec, maximum is 0 msec
Neighbor Count is 0, Adjacent neighbor count is 0
Suppress hello for 0 neighbor(s)
FastEthernet0/0 is up, line protocol is up
Internet Address 1.1.22.12/24, Area 99
Process ID 1, Router ID 160.1.2.2, Network Type BROADCAST, Cost: 1
Transmit Delay is 1 sec, State BDR, Priority 1
Designated Router (ID) 160.1.8.8, Interface address 1.1.22.2
Backup Designated router (ID) 160.1.2.2, Interface address 1.1.22.12
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:04
Index 1/4, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 2, maximum is 10
Last flood scan time is 0 msec, maximum is 4 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 160.1.8.8 (Designated Router)
Suppress hello for 0 neighbor(s)
rack1r2#sh ip ospf nei
Neighbor ID Pri State Dead Time Address Interface
160.1.4.4 0 FULL/ - 00:00:39 1.1.234.4 Tunnel24
160.1.3.3 0 FULL/ - 00:00:38 1.1.234.3 Tunnel23
160.1.8.8 1 FULL/DR 00:00:39 1.1.22.2
FastEthernet0/0
-----Original Message-----
From: Gregory Gombas [mailto:ggombas@gmail.com]
Sent: Sunday, October 07, 2007 8:52 PM
To: Joseph Brunner
Cc: ccielab@groupstudy.com
Subject: Re: OSPF over Frame-relay Task
Hmmm
No DR means you can't use network types NBMA or Broadcast.
Can't use opsf network command means you can't change the network type
to multipoint which would have been my choice.
Looks like PPP over Frame Relay is the only choice here.
What other way is there?
On 10/7/07, Joseph Brunner <joe@affirmedsystems.com> wrote:
> Can anyone add something to this task (I made it up). (Slevin I made this
> for you, so you won't have to ask us later ;)
>
>
>
> 2.1 Frame-relay Configuration
>
> - Configure frame-relay between R2, R3 and R4 per the diagram
>
> - Configure frame-relay using only these device's physical interfaces.
>
> - Disable the use of inverse arp on these interfaces.
>
> - R3 & R4 will each only have 1 "frame-relay map" command
>
> - Do not use the "broadcast" keyword on any interface
>
> .
>
>
>
>
>
> 3.2 OSPF Configuration over Frame-relay
>
> - Configure OSPF area 0 between R2, R3 and R4
>
> - You are not allowed to use the command "ip ospf network" on any of
> these routers
>
> - You are not allowed to create any additional addressing for this
task
>
> - There will not be a DR in this area.
>
>
>
>
>
> There are several ways to solve this task; I think it's a pretty good
judge
> of whether or not you're ready for the CREATIVITY required to pass the
lab.
>
>
>
> -Joe
>
> _______________________________________________________________________
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This archive was generated by hypermail 2.1.4 : Fri Nov 16 2007 - 13:11:12 ART