From: Rob Hopkins (rshopkins@xxxxxxxxxxxxx)
Date: Sun Apr 15 2001 - 02:02:24 GMT-3
maybe it was a typo but the default network doesnt show in your r4 routing
table...
----- Original Message -----
From: "Mannan Venkatesan" <venkat_m@ins.com>
To: "Connary, Julie Ann" <jconnary@cisco.com>; <ccielab@groupstudy.com>
Sent: Saturday, April 14, 2001 6:23 PM
Subject: Re: BGP aggregates and IGRP default networks - policy routing is
the answer
> Hi,
> I was trying this config with policy routing. Have a comment. Correct me
if
> I am wrong.
>
> I used 171.100 network between BGP peers(R5 and R6). So, with standard
> acces-list for the policy routing, I couldn't ping OSPF routes from R6(bgp
> nei of R5). After pulling my hair for a while, I configured an ext.
> access-list for policy routing which did the trick.
>
> 'access-list 101 permit ip any 170.100.0.0 0.0.255.255'
>
> Regards,
>
> Mannan
>
> ----- Original Message -----
> From: "Connary, Julie Ann" <jconnary@cisco.com>
> To: <ccielab@groupstudy.com>
> Sent: Monday, January 15, 2001 12:36 PM
> Subject: Re: BGP aggregates and IGRP default networks - policy routing is
> the answer
>
>
> Hi All,
>
> solved my own problem - policy routing!!!!
>
> I set up a route-map that anything that matched 170.100.0.0 would be
policy
> routed to
> next hop ip 170.100.1.5. I then enabled local policy routing - so now
> everything destined for 170.100.0.0 is policy routed before it hits the
> route-table and my
> BGP aggregate route is no longer a problem. Don't forget to policy route
> any interfaces so if you have
> to ping "through" this router that it works.
>
> route-map subnets, permit, sequence 10
> Match clauses:
> ip address (access-lists): 5
> Set clauses:
> ip next-hop 170.100.1.5
> Policy routing matches: 93 packets, 6479 bytes
> Standard IP access list 5
> permit 170.100.0.0, wildcard bits 0.0.255.255
>
> ip local policy route-map subnets
>
>
> Now if I turn on debug ip policy and ping 170.100.42.241 I get:
>
> 1d22h: IP: route map subnets, item 10, permit
> 1d22h: IP: s=170.100.1.4 (local), d=170.100.42.241 (Serial0), len 100,
> policy ro
> uted
> 1d22h: IP: local to Serial0 170.100.1.5
> 1d22h: IP: s=170.100.1.4 (local), d=170.100.42.241, len 100, policy match
> 1d22h: IP: route map subnets, item 10, permit
> 1d22h: IP: s=170.100.1.4 (local), d=170.100.42.241 (Serial0), len 100,
> policy ro
> uted
> 1d22h: IP: local to Serial0 170.100.1.5
> 1d22h: IP: s=170.100.1.4 (local), d=170.100.42.241, len 100, policy match
> 1d22h: IP: route map subnets, item 10, permit
> 1d22h: IP: s=170.100.1.4 (local), d=170.100.42.241 (Serial0), len 100,
> policy ro
> uted
> 1d22h: IP: local to Serial0 170.100.1.5
> 1d22h: IP: s=170.100.1.4 (local), d=255.255.255.255, len 46, policy match
> 1d22h: IP: route map subnets, item 10, permit
> 1d22h: IP: s=170.100.1.4 (local), d=255.255.255.255 (Serial0), len 46,
> policy ro
> uted
> 1d22h: IP: local to Serial0 170.100.1.5
>
> Julie Ann
>
>
>
>
>
> At 10:50 AM 1/15/2001 -0500, Connary, Julie Ann wrote:
> >Hi All,
> >
> >
> >I have one I cannot figure out. I have an IGRP router that is using a
> >default-network to
> >overcome subnet mask length differences into my OSPF network. Works great
> >until I
> >did the BGP part of the lab which requires an aggregate address. The
> >aggregate address puts
> >a static route to null 0 in my routing table and I can no longer default
> >route to the OSPF network:
> >
> >
> >
> >OSPF Network with 24, 28 and 29 bit masks of 170.100.x.x
> > |
> > |
> > |
> > Router 5 - OSPF and IGRP
> > |
> > | 170.100.1.x/24
> > |
> > Frame-relay point-to-point link
> > |
> > |
> > |
> > Router 4 - running IGRP and BGP
> > ip default-network 200.0.5.0
> > router bgp 5
> > no auto-summary
> > network 170.100.1.0 mask 255.255.255.0
> > aggregate-address 170.0.0.0 255.0.0.0 summary-only
> >
> >
> >Now I get the following routing table on R4 and cannot get to any of the
> >non 24 bit subnets in OSPF.
> >How do I fix WITHOUT using static routes on R5 that "summarize" the 28
and
> >29 bit subnets to
> >24 bits and redistribute them into IGRP. Can I stop the aggregate address
> >from being entered into
> >R4's routing table. I really only want to advertise that aggregate to my
> >EBGP neighbor anyways.
> >
> >Gateway of last resort is 170.100.1.5 to network 210.0.5.0
> >
> > 170.100.0.0/24 is subnetted, 9 subnets
> >C 170.100.200.0 is directly connected, Ethernet0
> >I 170.100.233.0 [100/10476] via 170.100.1.5, 00:01:03, Serial0
> >I 170.100.129.0 [100/10476] via 170.100.1.5, 00:01:03, Serial0
> >I 170.100.150.0 [100/10476] via 170.100.1.5, 00:01:03, Serial0
> >I 170.100.68.0 [100/10476] via 170.100.1.5, 00:01:03, Serial0
> >I 170.100.67.0 [100/10476] via 170.100.1.5, 00:01:03, Serial0
> >I 170.100.64.0 [100/10476] via 170.100.1.5, 00:01:04, Serial0
> >I 170.100.65.0 [100/10476] via 170.100.1.5, 00:01:04, Serial0
> >C 170.100.1.0 is directly connected, Serial0
> > 1.0.0.0/24 is subnetted, 1 subnets
> >C 1.1.1.0 is directly connected, Loopback0
> >I* 210.0.5.0/24 [100/10476] via 170.100.1.5, 00:01:04, Serial0
> >B 205.15.150.0/24 [20/0] via 170.100.200.7, 1d18h
> >B 170.0.0.0/8 [200/0] via 0.0.0.0, 1d18h, Null0 <---------------this
> >entry is stopping my default-network from being usefull.
> >tserve#ping 170.100.42.241
> >
> >Type escape sequence to abort.
> >Sending 5, 100-byte ICMP Echos to 170.100.42.241, timeout is 2 seconds:
> >.....
> >Success rate is 0 percent (0/5)
> >tserve#
> >
> >
> >Thanks,
> >
> >Julie Ann
> >
> >------------------------------------------------------------------------
> > Julie Ann Connary
> > | | Network Consulting Engineer
> > ||| ||| Federal Support Program
> > .|||||. .|||||. 13635 Dulles Technology
Drive,
> >Herndon VA 20171
> > .:|||||||||:.:|||||||||:. Pager: 1-888-642-0551
> > c i s c o S y s t e m s Email: jconnary@cisco.com
> >
> >------------------------------------------------------------------------
> ------------------------------------------------------------------------
> Julie Ann Connary
> | | Network Consulting Engineer
> ||| ||| Federal Support Program
> .|||||. .|||||. 13635 Dulles Technology Drive,
> Herndon VA 20171
> .:|||||||||:.:|||||||||:. Pager: 1-888-642-0551
> c i s c o S y s t e m s Email: jconnary@cisco.com
>
> ------------------------------------------------------------------------
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