From: siegfried.droogmans@skynet.be
Date: Fri Feb 03 2006 - 09:14:01 GMT-3
Hi,
can someone explain following behaviour:
R2 is Hub
R4, R5 are spokes
only physical ports allowed
Hub ospf network type is PTMP
If I use OSPF network PTP on spokes I can NOT ping other spokes. (CASE 1)
If I use OSPF network PTMP on spokes I CAN ping other spokes. (CASE 2)
Is this expected behaviour? I wouldn't expect the 'ip ospf network' command to have influence on icmp connectivity.
CASE1:
------
R4(config-router)#
router ospf 1
log-adjacency-changes
network 150.50.100.0 0.0.0.255 area 0
network 200.0.0.0 0.0.0.255 area 0
interface Serial0/0/0
ip address 150.50.100.4 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-point
frame-relay map ip 150.50.100.2 401 broadcast
no frame-relay inverse-arp
R5(config-router)#
router ospf 1
log-adjacency-changes
network 150.50.100.0 0.0.0.255 area 0
interface Serial0/1/0
ip address 150.50.100.5 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-point
frame-relay map ip 150.50.100.2 501 broadcast
no frame-relay inverse-arp
R2(config-router)#
router ospf 1
log-adjacency-changes
network 150.50.100.0 0.0.0.255 area 0
interface Serial0/1/0
ip address 150.50.100.2 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-multipoint
ip ospf hello-interval 10
frame-relay map ip 150.50.100.4 104 broadcast
frame-relay map ip 150.50.100.5 105 broadcast
no frame-relay inverse-arp
end
R2(config-if)#do sfm
Serial0/1/0 (up): ip 150.50.100.4 dlci 104(0x68,0x1880), static,
broadcast,
CISCO, status defined, active
Serial0/1/0 (up): ip 150.50.100.5 dlci 105(0x69,0x1890), static,
broadcast,
CISCO, status defined, active
R4(config-if)#do sfm
Serial0/0/0 (up): ip 150.50.100.2 dlci 401(0x191,0x6410), static,
broadcast,
CISCO, status defined, active
R5(config-if)#do sfm
Serial0/1/0 (up): ip 150.50.100.2 dlci 501(0x1F5,0x7C50), static,
broadcast,
CISCO, status defined, active
R5(config-if)#do ping 150.50.100.4
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 150.50.100.4, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
CASE 2:
-------
R4(config-if)#
router ospf 1
log-adjacency-changes
network 150.50.100.0 0.0.0.255 area 0
network 200.0.0.0 0.0.0.255 area 0
interface Serial0/0/0
ip address 150.50.100.4 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-multipoint
frame-relay map ip 150.50.100.2 401 broadcast
no frame-relay inverse-arp
R5(config-if)#
router ospf 1
log-adjacency-changes
network 150.50.100.0 0.0.0.255 area 0
interface Serial0/1/0
ip address 150.50.100.5 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-multipoint
frame-relay map ip 150.50.100.2 501 broadcast
no frame-relay inverse-arp
R2(config-if)#
router ospf 1
log-adjacency-changes
network 150.50.100.0 0.0.0.255 area 0
interface Serial0/1/0
ip address 150.50.100.2 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-multipoint
frame-relay map ip 150.50.100.4 104 broadcast
frame-relay map ip 150.50.100.5 105 broadcast
no frame-relay inverse-arp
R2(config-if)#do sfm
Serial0/1/0 (up): ip 150.50.100.4 dlci 104(0x68,0x1880), static,
broadcast,
CISCO, status defined, active
Serial0/1/0 (up): ip 150.50.100.5 dlci 105(0x69,0x1890), static,
broadcast,
CISCO, status defined, active
R4(config)#do sfm
Serial0/0/0 (up): ip 150.50.100.2 dlci 401(0x191,0x6410), static,
broadcast,
CISCO, status defined, active
R5(config-if)#do sfm
Serial0/1/0 (up): ip 150.50.100.2 dlci 501(0x1F5,0x7C50), static,
broadcast,
CISCO, status defined, active
R4(config)#do ping 150.50.100.5
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 150.50.100.5, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/19/20 ms
I have rebooted several times.
SW is 12.4(3a) on all routers.
R2 is 3825, R4 and R5 are 2811
cheers,
Siegfried
This archive was generated by hypermail 2.1.4 : Wed Mar 01 2006 - 11:28:17 GMT-3