doyle ospf chap 4 case 1... watch out...

r

int lo0
ip add 192.168.30.1 255.255.255.248

int s1/1
ip add 192.168.30.9 255.255.255.248
clock rat 128000
band 128
no shut


c

int s1/1
ip add 192.168.30.10 255.255.255.248
band 128
no shut


int s1/2
ip add 192.168.20.1 255.255.255.252
clock rat 128000
band 128
no shut

g

int s1/2
ip add 192.168.20.2 255.255.255.252
band 128
no shut

int s1/3
ip add 192.168.10.1 255.255.255.224
clock rat 128000
band 128
no shut

m

int lo0
ip add 192.168.10.65 255.255.255.192

int lo1
ip add 192.168.10.33 255.255.255.240

int s1/3
ip add 192.168.10.2 255.255.255.224
band 128
no shut

the following is a demonstration of the flexibility in the network command...

r

router ospf 10
netw 0.0.0.0 255.255.255.255 area 1

c

router ospf 20

netw 192.168.20.0 0.0.0.255 area 0
netw 192.168.30.0 0.0.0.255 area 1

g

router ospf 30
netw 192.168.20.0 0.0.0.3 area 0.0.0.0
netw 192.168.10.0 0.0.0.31 area 192.168.10.0

m
router ospf 40
netw 192.168.10.2 0.0.0.0 area 192.168.10.0
netw 192.168.10.33 0.0.0.0 area 192.168.10.0

it's ok... jeff doyle is insane and so are you...


m# sh ip route | exc L |inc loop
     
Gateway of last resort is not set

      192.168.10.0/24 is variably subnetted, 6 subnets, 4 masks
C        192.168.10.0/27 is directly connected, Serial1/3
C        192.168.10.32/28 is directly connected, Loopback1
C        192.168.10.64/26 is directly connected, Loopback0
      192.168.20.0/30 is subnetted, 1 subnets
O IA     192.168.20.0 [110/1562] via 192.168.10.1, 00:00:33, Serial1/3
      192.168.30.0/24 is variably subnetted, 2 subnets, 2 masks
O IA     192.168.30.1/32 [110/2344] via 192.168.10.1, 00:00:33, Serial1/3
O IA     192.168.30.8/29 [110/2343] via 192.168.10.1, 00:00:33, Serial1/3

m#ping 192.168.30.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.30.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/13/20 ms

naturally you have a preferred method of tapping out  network statements, as i do...  and speed is important... this was not speedy, at all...

i think jeff doyle is the red knight...

you really have to read the guy... i will not attempt to paraphrase; it is so well done i wouldn't dare... vol 1 pg413... no wonder this is on everyone's digital bookshelf...

note that although lo0 on router m does not participate in ospf it is yet the router id... when was the last time you used this command?


m#sh ip ospf 40
 Routing Process "ospf 40" with ID 192.168.10.65
 Start time: 00:40:44.000, Time elapsed: 00:21:26.372
 Supports only single TOS(TOS0) routes
 Supports opaque LSA
 Supports Link-local Signaling (LLS)
 Supports area transit capability
 Supports NSSA (compatible with RFC 3101)
 Event-log enabled, Maximum number of events: 1000, Mode: cyclic
 Router is not originating router-LSAs with maximum metric
 Initial SPF schedule delay 5000 msecs
 Minimum hold time between two consecutive SPFs 10000 msecs
 Maximum wait time between two consecutive SPFs 10000 msecs
 Incremental-SPF disabled
 Minimum LSA interval 5 secs
 Minimum LSA arrival 1000 msecs
 LSA group pacing timer 240 secs
 Interface flood pacing timer 33 msecs
 Retransmission pacing timer 66 msecs
 Number of external LSA 0. Checksum Sum 0x000000
 Number of opaque AS LSA 0. Checksum Sum 0x000000
 Number of DCbitless external and opaque AS LSA 0
 Number of DoNotAge external and opaque AS LSA 0
 Number of areas in this router is 1. 1 normal 0 stub 0 nssa
 Number of areas transit capable is 0
 External flood list length 0
 IETF NSF helper support enabled
 Cisco NSF helper support enabled
 Reference bandwidth unit is 100 mbps
    Area 192.168.10.0
        Number of interfaces in this area is 2 (1 loopback)
    Area has no authentication
    SPF algorithm last executed 00:21:21.280 ago
    SPF algorithm executed 1 times
    Area ranges are
    Number of LSA 5. Checksum Sum 0x029BF1
    Number of opaque link LSA 0. Checksum Sum 0x000000
    Number of DCbitless LSA 0
    Number of indication LSA 0
    Number of DoNotAge LSA 0
    Flood list length 0

proof that you can't simply read the book... you have to be the book...