From: David Broughton (ccie2002@bellsouth.net)
Date: Fri Nov 15 2002 - 12:05:41 GMT-3
All:
Thanks for you suggestions. I tried 0.0.0.0 254.255.255.255 and
this filtered only the routes that have a even 1st octet.
Thanks.
----- Original Message -----
From: "Bob Rech" <brech@kc.rr.com>
To: <ccie2002@bellsouth.net>; <ccielab@groupstudy.com>
Sent: Thursday, November 14, 2002 5:47 PM
Subject: Re: BGP HELP_FILTERING EVENS ROUTES
> The access-list you have 0.0.0.0 254.0.0.0
> says match anything the last bit int the first octet =0 {or an even number
> in the first octect}
> it also says match exactly the 2-4 octets which are all 0
> so this would match
> 0.0.0.0
> 2.0.0.0
> 4.0.0.0
> 6.0.0.0
> if what you were looking for was to match all even in the first octet then
> try 254.255.255.255
> if what you wanted was to match the last octet then try 255.255.255.254
> as long as you don't care what the other octets are.
> for example if you wanted to match 200.200.<even numbers>.<don't care>
> try 200.200.0.0 0.0.254.255
> ----- Original Message -----
> From: <ccie2002@bellsouth.net>
> To: <ccielab@groupstudy.com>
> Sent: Thursday, November 14, 2002 1:40 PM
> Subject: BGP HELP_FILTERING EVENS ROUTES
>
>
> > Hello:
> >
> > Need a little BGP help trying to only premit even bgp routes
> > to come thru. From some reason I can not get my even routes
> > to come thru on my Cisco 2509 router. Can anyone advise what I might
> > be doing wrong. I have two router in the same AS100 and I would like
> > the Cisco2509 to recieve the even routes from the Cisco 2504.
> > I did a route map but eveytime I adversite that to my neighbor
> > (Cisco2504) I do not recieve "any" bgp routes from my Cisco2509.
> > The goal is for the Cisco 2509 to see only even bgp routs advertised
> > from the Cisco 2504.
> >
> > Any help would be grateful. Below are the configs
> >
> >
> > Cisco2509#show ip bgp
> > BGP table version is 9, local router ID is 200.200.4.4
> > 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
> > *> 160.7.7.0/24 150.3.47.2 0 200 300 i
> > *> 160.11.1.0/24 150.3.47.2 0 200 300 i
> > *> 160.12.1.0/24 150.3.47.2 0 200 300 i
> > *> 160.13.1.0/24 150.3.47.2 0 200 300 i
> > *> 195.6.6.0 150.3.47.2 0 200 i
> > *> 195.10.2.0 150.3.47.2 0 0 200 i
> > *> 200.200.3.0 0.0.0.0 0 32768 i
> > *> 200.200.4.0 0.0.0.0
> >
> >
> > router bgp 100
> > no synchronization
> > network 200.200.3.0
> > network 200.200.4.0
> > neighbor 150.3.26.6 remote-as 100
> > neighbor 150.3.26.6 route-reflector-client
> > neighbor 150.3.26.6 route-map EVEN in
> > neighbor 150.3.47.2 remote-as 200
> > !Cisco2509#show ip bgp summary
> > BGP router identifier 200.200.4.4, local AS number 100
> > BGP table version is 9, main routing table version 9
> > 8 network entries and 8 paths using 968 bytes of memory
> > 3 BGP path attribute entries using 344 bytes of memory
> > BGP activity 78/70 prefixes, 133/125 paths
> > 32 prefixes revised.
> >
> > Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
> State/PfxRcd
> > 150.3.26.6 4 100 233 222 9 0 0 00:19:35
> 0
> > 150.3.47.2 4 200 231 203 9 0 0 00:19:21
> 6
> > Cisco250
> >
> > ip classless
> > !
> > access-list 10 permit 0.0.0.0 254.0.0.0
> > route-map EVEN permit 10
> > match ip address 10
> >
> >
> >
> >
> >
> >
> > Cisco2504>show ip bgp sum
> > BGP router identifier 150.3.4.4, local AS number 100
> > BGP table version is 105, main routing table version 105
> > 17 network entries and 23 paths using 2249 bytes of memory
> > 4 BGP path attribute entries using 440 bytes of memory
> > BGP activity 43/26 prefixes, 98/75 paths
> > 0 prefixes revised.
> >
> > Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
> State/PfxRcd
> > 150.3.26.5 4 100 223 235 105 0 0 00:20:53
> 8
> > 150.3.53.5 4 100 215 218 105 0 0 03:01:42
> 10
> > Cisco250
> >
> >
> >
> > router bgp 100
> > no synchronization
> > network 10.10.10.0 mask 255.255.255.0
> > network 11.11.11.0 mask 255.255.255.0
> > network 12.12.12.0 mask 255.255.255.0
> > network 13.13.13.0 mask 255.255.255.0
> > network 14.14.14.0 mask 255.255.255.0
> > neighbor 150.3.26.5 remote-as 100
> > neighbor 150.3.26.5 route-reflector-client
> > neighbor 150.3.53.5 remote-as 100
> > neighbor 150.3.53.5 route-reflector-client
> >
> >
> >
> > Cisco2504>show ip bgp
> > BGP table version is 105, local router ID is 150.3.4.4
> > 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
> > *> 10.10.10.0/24 0.0.0.0 0 32768 i
> > *> 11.11.11.0/24 0.0.0.0 0 32768 i
> > *> 12.12.12.0/24 0.0.0.0 0 32768 i
> > *> 13.13.13.0/24 0.0.0.0 0 32768 i
> > *> 14.14.14.0/24 0.0.0.0 0 32768 i
> > * i160.7.7.0/24 150.3.47.2 100 0 200 300 i
> > *>i 150.3.25.6 100 0 200 300 i
> > * i160.11.1.0/24 150.3.47.2 100 0 200 300 i
> > *>i 150.3.25.6 100 0 200 300 i
> > * i160.12.1.0/24 150.3.47.2 100 0 200 300 i
> > *>i 150.3.25.6 100 0 200 300 i
> > * i160.13.1.0/24 150.3.47.2 100 0 200 300 i
> > *>i 150.3.25.6 100 0 200 300 i
> > *>i195.5.5.0 150.3.53.5 0 100 0 i
> > * i195.6.6.0 150.3.47.2 100 0 200 i
> > *>i 150.3.25.6 0 100 0 200 i
> > * i195.10.2.0 150.3.47.2 100 0 200 i
> > *>i 150.3.25.6 0 100 0 200 i
> > Network Next Hop Metric LocPrf Weight Path
> > *>i196.6.6.0 150.3.53.5 0 100 0 i
> > *>i197.7.7.0 150.3.53.5 0 100 0 i
> > *>i198.8.8.0 150.3.53.5 0 100 0 i
> > *>i200.200.3.0 150.3.26.5 0 100 0 i
> > *>i200.200.4.0 150.3.26.5 0 100 0 i
> > Cisco250
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