Routing Table - Question about Redistribution

I would be grateful if someone could help clarify why this happens in my lab mock up. First the description....

Network as follows:

RTRA(eBGP) -877 RTRC(RIPv2) - 877 | | |------------MPLS Cloud -----------------| | (1800 Router) | | | | | | | RTRB (eBGP) - 877| | RTRD(Backup ISDN) - 801 | | |-------RTRE (2801) (eBGP)

Rtr A, C,E MPLS facing WAN Links - 10.250.1.X/30 Rrt B & Rtr E links -

On the left hand side of the diagram, I have 2 x routers, 1 (A) x connects to my MPLS Cloud (rtr 1800), the other (B) connects to router E. All links into the cloud (other than the ISDN router as it's not configured yet) & router B are /30 point to point links as follows:

Router A - with the corresponding port on the 1800 (VLAN2) as RTRC - with the cloud being Vlan 4 - RTRE - with the cloud being Vlan5 -

The cloud 1800 is providing the following role:

1) Pushing a default route (default information-originate) into the cloud so that my remote sites 192.168.X.0/24 have a default route from router E which onward connects to the Internet.

2) Redistribution of eBGP routes via a route-map permitting only into RIP

3) Redistribution or RIP into BGP permitting the subnets of router C & to pass to router

When looking at the routing table of router C - I find the following subnets: /30 - WAN subnet from router A /30 - WAN subnet from router E

Both of the above are learned via RIPV2 with a next hop address of How can this be ? - If my redistribution on my 1800 router is only permitting the BGP learned route of to be injected into RIP, why does router C learn of the WAN subnets from router A and E when I have not permitted them.

Is this all because my simulated WAN cloud is 1 x router ?



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Darren Green
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