Simple Question : What is "forward metric" ?

[raymond.leung]

as show ip route tells

i cannot find Cisco documentation for "forward metric" ... what is it ?

our-6509->sh ip route 172.23.0.0

Routing entry for 172.23.0.0/16

Known via "ospf 1", distance 110, metric 20, type extern 2, forward metric 21

Last update from 172.28.104.70 on Vlan104, 1d19h ago

Routing Descriptor Blocks:

* 172.28.104.70, from 192.168.220.22, 1d19h ago, via Vlan104

Route metric is 20, traffic share count is 1

our-6509->

[minumathur]

Hi.

Forward Metric comes into picture , when you are using external route type into OSPF type 1 and type 2.

Type 2 is using external cost only which you r defined ( default 20 cost using ).

type -1 is using external and internal both,

this show ip route i beliave external type 2 ,, so it will show forwared metric 21

[raymond.leung]

1stofall, thanks. i'd aware of the type 2 ext as the route is from eigrp. The default metric is 20 alright. But it differs in forward metric when i redistribute the same route from another source (which is my original problem). The "forward metric" is a Cisco Mystery ? No documentation.

our-6509->sh ip route 172.23.0.0

Routing entry for 172.23.0.0/16

Known via "ospf 1", distance 110, metric 20, type extern 2, forward metric 1

Last update from 172.28.104.161 on Vlan104, 00:02:04 ago

Routing Descriptor Blocks:

* 172.28.104.161, from 192.168.220.161, 00:02:04 ago, via Vlan104

Route metric is 20, traffic share count is 1