From: Mohamed (nmohamed@cisco.com)
Date: Fri Apr 30 2004 - 03:10:39 GMT-3
Hi,
Sergio,
Yeah, really I also don't know,hope someone would be able to help us..
Thanks
Mohamed.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Sergio Jimenez Arguedas
Sent: Thursday, April 29, 2004 8:27 PM
To: ccielab@groupstudy.com
Subject: Fw: BGP MED Scenario!!!
Hi,
Mohamed, I really did it, but WITHOUT the route-map INT SFM Tx the
prefix to Side with the eigrp metric.
So, I got confused with that cmd (set metric-type internal) in BGP.
Thanks,
Sergio
----- Original Message -----
From: "Mohamed" <nmohamed@cisco.com>
To: "'Sergio Jimenez Arguedas'" <sejimenez@its.co.cr>;
<ccielab@groupstudy.com>
Sent: Thursday, April 29, 2004 12:56 AM
Subject: RE: BGP MED Scenario!!!
> Hi,
> I got your question, sorry I couldnot spare time to do in OSPF!.
>
> SFM#sh ip route eigrp
> 20.0.0.0/24 is subnetted, 1 subnets
> D 20.1.1.0 [90/28416] via 25.25.25.26, 00:01:31, FastEthernet3/6
> 200.100.100.0/24 is variably subnetted, 2 subnets, 2 masks
> D 200.100.100.0/24
> [90/128512] via 25.25.25.26, 00:01:31, FastEthernet3/6
> 201.100.100.0/24 is variably subnetted, 2 subnets, 2 masks
> D 201.100.100.0/24
> [90/128512] via 25.25.25.26, 00:01:31, FastEthernet3/6
>
> Note the metric on eigrp route-128512 for network 200.100.100.0/24
>
> Now -
> SFM#sh run | b router bgp
> router bgp 100
> no synchronization
> bgp log-neighbor-changes
> network 200.100.100.0 <<<<<<<<<<<<<<<<
> network 201.100.100.0 <<<<<<<<<<<<<<<<<
> neighbor 25.25.25.26 remote-as 100
> neighbor 99.99.99.2 remote-as 300
> neighbor 99.99.99.2 route-map INT out
> no auto-summary
>
> So here iam advertising network 200.100.100.0.
>
> Down---------------SFM-----------Side---------Up
>
> From down to sfm router,I run eigrp and down advertise 200.100.100.0
> and 201.100.100.0 as eigrp routes to sfm router. I DON'T REDISTRIBUTE
> EIGRP HERE!!!! In SFM. I advertise using network command.I set a
> route-map to Side router. Now see what the route-map is
>
>
> ip as-path access-list 9 permit .*
> route-map INT permit 10
> match as-path 9
> set metric-type internal
> End
>
>
> So BGP set the metric of the advertised routes 200.100.100.0 and
> 201.100.100.0 to Side as Eigrp metric=128512 . Side#sh ip bgp
> BGP table version is 78, local router ID is 213.1.4.1
> Status codes: s suppressed, d damped, h history, * valid, > best, i -
> internal
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
> Network Next Hop Metric LocPrf Weight Path
> *> 200.100.100.0 99.99.99.1 128512 0 100 i
> *> 201.100.100.0 99.99.99.1 128512 0 100 i
> Side#
>
> I think it don't do anyother job than this!!
>
> Thanks
> Mohamed.
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of Sergio Jimenez Arguedas
> Sent: Wednesday, April 28, 2004 10:08 PM
> To: ccielab@groupstudy.com
> Subject: Fw: BGP MED Scenario!!!
>
>
> Hi Mohamed,
>
>
> I really understand that, but the doubt is the following,
>
> 172.16.0.0------RA-------------RB-------------RC-------------RD
>
>
> Config RB
>
>
> router bgp 1
> netw 172.16.0.0
> neighbor x.x.x.x remote-as 2
>
>
> RBsi
> Tx the prefix if it has a route of 172.16.0.0 in the routing table.
> RB Rx the route from RA by ospf, So RB tx the prefix with the IGP
> metric to RC without THE ROUTE-MAP with set metric-type internal.
>
>
> Question: How can I use a route-map with set metric-type internal?
>
>
> Thanks,
>
>
> Sergio
>
>
>
>
>
>
>
>
>
>
>
> ----- Original Message -----
> From: "Mohamed" <nmohamed@cisco.com>
> To: "'Sergio Jimenez Arguedas'" <sejimenez@its.co.cr>;
> <ccielab@groupstudy.com>
> Sent: Wednesday, April 28, 2004 1:20 AM
> Subject: RE: BGP MED Scenario!!!
>
>
> > I tried in my router,
> >
> > A----------B----------C---------D
> >
> > A,B are IBGP,running OSPF.
> > B redistributing OSPF into BGP.
> > C is EBGP of B.
> > D is Ebgp of C
> >
> > Now in C,we get the metrics from B,bcoz C only reset the metric to
> > zero. In D we don't get metric.
> >
> >
> > Now if u put route-map and set metric-type int or even set origin
> > igp,I don't get any mteric in D,bcoz MED is a optional
> > Non-transitive attribute,which never passed to EBGP peers.
> >
> >
> > Thanks
> > Mohamed.
> >
> >
> >
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> > Of Sergio Jimenez Arguedas
> > Sent: Wednesday, April 28, 2004 2:29 AM
> > To: ccielab@groupstudy.com
> > Subject: BGP MED Scenario!!!
> >
> >
> > Hi Group,
> >
> > I have a question about BGP MED, the scenario is the following:
> >
> >
> >
> > --------------EB GP----------------------R4
> > OSPF |
> > |ibgp
> > NETA
> > ----------R1------------------------------R2------------EBGP--------
> > --
> > --
> > -----
> > -----R3-------------EBGP-----------------R5
> >
> >
> > R1 Tx NETA to R2 by OSPF and R2 Tx NetA to R3/R4 by EBGP. R3 and R4
> > Rx
>
> > NETA with the IGP (OSPF) metric. When R3 Tx the route R5, R5 Rx the
> > route with the metric 0. I understood it, but I have the following
> > question:
> >
> >
> > If I apply a route-map from R3 to R5 with set metric-type
> > internal.......This would cause BGP routes to carry the internal IGP
> > metric as the BGP MED?
> >
> > R3/R4 carried the IGP metric without a route-map in R2.
> >
> >
> >
> > Could you help me, please?
> >
> >
> > Reference: HALABI Pag_340
> >
> >
> >
> > Rgds,
> >
> >
> > Sergio Jiminez A.
> >
> > ____________________________________________________________________
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