[Xorp-hackers] State of OSPF
'Kristian Larsson'
kristian at spritelink.se
Fri Jun 2 06:52:35 PDT 2006
On Fri, Jun 02, 2006 at 07:04:09AM -0600, Mike Horn wrote:
> Hi Kristian,
>
> I have XORP running OSPF with 2 Cisco's (2600, 4500) and a Juniper (J2300)
> here, perhaps you could send out your config? The most common issue I have
> seen is that for OSPF to work properly XORP requires that you specify the IP
> addres of the interface that is running XORP.
>
> Here's an example:
>
> set protocols ospf4 router-id 10.0.0.50
> set protocols ospf4 area 0.0.0.0 interface eth0 vif eth0 address 10.0.0.50
My configuration:
root at crs1# show
protocols {
ospf4 {
router-id: 195.182.5.227
area 0.0.0.0 {
interface "eth1.3910" {
vif "eth1.3910" {
address 195.182.5.227 {
}
}
}
}
}
}
interfaces {
interface "eth1.3910" {
vif "eth1.3910" {
address 195.182.5.227 {
prefix-length: 28
}
}
}
}
cisco conf (relevant sections):
interface FastEthernet0/1.3910
description AS39525 CNV Linknet
encapsulation dot1Q 3910
ip address 195.182.5.225 255.255.255.248
ip pim sparse-dense-mode
no cdp enable
router ospf 39525
router-id 195.182.5.252
log-adjacency-changes
redistribute connected subnets
passive-interface default
no passive-interface FastEthernet0/1.3909
no passive-interface FastEthernet0/1.3910
no passive-interface Tunnel10
no passive-interface Tunnel11
no passive-interface Tunnel12
network 195.182.5.0 0.0.0.255 area 0
neighbor 195.182.5.116 priority 1
default-information originate
root at crs1# run show ospf4 neighbor
Address Interface State ID Pri Dead
root at crs1#
show ip ospf neighbor on the cisco does not show it as a neighbor either.
running tcpdump on the xorp machine I see:
14:54:23.569081 IP 195.182.5.225 > 224.0.0.5: OSPFv2, Hello (1), length: 60
14:54:28.732384 IP 195.182.5.227 > 224.0.0.5: OSPFv2, Hello (1), length: 44
so both are sending packets.. hmm, how about some debugging!?
terminal monitor; debug ip ospf hello (on the cisco) gives me:
*Jun 2 13:52:20.460: OSPF: Rcv hello from 195.182.5.227 area 0 from FastEthernet0/1.3910 195.182.5.227
*Jun 2 13:52:20.460: OSPF: Mismatched hello parameters from 195.182.5.227
I've captured a small tcpdump that you may look at... it contains some other traffic as well, but the ospf
traffic is not very hard to spot ;)
XORP is not latest (but not very old) CVS. I'd say it's from a month ago or so.
The XORP machine is a Celeron 2.66GHz machine with dual Broadcom Tigon3 Gigabit Ethernet controllers.
XORP was not built on that machine but on another Celeron machine.
No strange config paramters to ./configure, just a straight build.
Hope I've given enough debug data.
Regards,
Kristian.
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