Re: OSPF Default Route

From: Alexei Monastyrnyi (alexeim73@gmail.com)
Date: Mon Jan 26 2009 - 11:48:43 ARST


but not in reality :-) it seems to be 1 for "originate" command and 20
for "redistribute" command. :-)
(20 is no wonder though, it's been 20 for redistribute one since OSPF
early days)

ASA 7.2.4 code, right from production environment of mine :-)

router ospf 17227
 log-adj-changes
 redistribute static subnets route-map offices
 default-information originate

cat6509 adjacent to ASA

cat6k(config)#do sh ip route ospf | in E2
O E2 192.168.149.0/24 [110/20] via 172.27.55.254, 00:00:54, Vlan255
O E2 192.168.148.0/24 [110/20] via 172.27.55.254, 00:00:54, Vlan255
O E2 192.168.150.0/24 [110/20] via 172.27.55.254, 00:00:54, Vlan255
O E2 192.168.145.0/24 [110/20] via 172.27.55.254, 00:00:54, Vlan255
O E2 192.168.144.0/24 [110/20] via 172.27.55.254, 00:00:54, Vlan255
O E2 192.168.147.0/24 [110/20] via 172.27.55.254, 00:00:54, Vlan255
O E2 192.168.140.0/24 [110/20] via 172.27.55.254, 00:00:54, Vlan255
O E2 192.168.141.0/24 [110/20] via 172.27.55.254, 00:00:54, Vlan255
O E2 192.168.142.0/24 [110/20] via 172.27.55.254, 00:00:54, Vlan255
O E2 192.168.143.0/24 [110/20] via 172.27.55.254, 00:00:54, Vlan255
O E2 192.168.153.0/24 [110/20] via 172.27.55.254, 00:00:54, Vlan255
O E2 192.168.152.0/24 [110/20] via 172.27.55.254, 00:00:54, Vlan255
O E2 192.168.155.0/24 [110/20] via 172.27.55.254, 00:00:54, Vlan255
O E2 192.168.154.0/24 [110/20] via 172.27.55.254, 00:00:54, Vlan255
O*E2 0.0.0.0/0 [110/1] via 172.27.55.254, 00:00:19, Vlan255

A.

Pavel Bykov wrote:
> Documentation says that default metric is 10 :)
> http://www.cisco.com/en/US/docs/ios/iproute/command/reference/irp_osp1.html#wp1012794
>
>
>
>
> On Mon, Jan 26, 2009 at 1:53 PM, Nick <ccieaz@googlemail.com> wrote:
>
>
>> Hi All
>>
>> Working through the IE Vol 1 Version 5 workbook I see this in the notes:
>>
>> "without additional arguments on the command the default route would have
>> been advertised as a Type-2 External route with a metric of 20"
>>
>> I tested this out, but I see the metric as 1. Is 20 a mistake in the IE
>> document or did I miss something?
>>
>> Rack1R6#show run | sec router ospf
>> router ospf 1
>> log-adjacency-changes
>> network 0.0.0.0 255.255.255.255 area 0
>> default-information originate always
>>
>> Rack1R4#show ip route ospf
>> <...>
>> O*E2 0.0.0.0/0 [110/1] via 155.1.146.6, 01:08:39, FastEthernet0/1
>>
>> Rack1R4#show ip ospf database external 0.0.0.0
>>
>> OSPF Router with ID (150.1.4.4) (Process ID 1)
>>
>> Type-5 AS External Link States
>>
>> Routing Bit Set on this LSA
>> LS age: 344
>> Options: (No TOS-capability, DC)
>> LS Type: AS External Link
>> Link State ID: 0.0.0.0 (External Network Number )
>> Advertising Router: 150.1.6.6
>> LS Seq Number: 80000003
>> Checksum: 0x9577
>> Length: 36
>> Network Mask: /0
>> Metric Type: 2 (Larger than any link state path)
>> TOS: 0
>> Metric: 1
>> Forward Address: 0.0.0.0
>> External Route Tag: 1
>>
>> --
>> ---
>>
>> Thanks
>>
>> Nick
>>
>>
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