From: Hunt Lee (ciscoforme3@yahoo.com.au)
Date: Mon Nov 04 2002 - 09:55:24 GMT-3
Team;
Sorry for that high urgency. I have a secnario which I am not too sure how to
do - :
Inside Outside
RTR1----ISP1
| \ /
HostA \/
| /\
| / \
RTR2---ISP2
RTR1 & RTR2 are connected by IBGP & OSPF. In addition, RTR1 & RTR2 ecah have 2
EBGP links connecting to ISP1 & ISP2 respectively.
RTR1 & RTR2 - AS3
ISP1 - AS1
ISP2 - AS2
RTR1, Eth0:- 172.16.3.1/24
RTR2, Eth0:- 172.16.3.2/24
Host A - 172.16.3.3/24
ISP1 has been assigned the address block 201.50.13.0/24, ISP2 has been assigned
the address block 200.100.30.0/24.
What I want to achieve is that the NAT will translate inside addresses
appropriately for each ISP's assigned address block.
The problem I am having is that since hostA's IP is being NAT, neither RTR1 nor
RTR2 have the NAT range in their Routing Tables, which means I can't
advertise the NAT range to ISP1 & ISP2 in BGP by "network x.x.x.x mask
y.y.y.y". So what can I do to advertise these NAT ranges to ISP1 & ISP2?? I
have tried using static routes:
I mean,
At ISP1:-
ip route 200.100.30.0 255.255.255.0 201.50.26.93 (to RTR2)
ip route 201.50.13.0 255.255.255.0 201.50.26.13 (to RTR1)
At ISP2:-
ip route 200.100.30.0 255.255.255.0 200.100.29.241 (to RTR2)
ip route 201.50.13.0 255.255.255.0 200.100.29.137 (to RTR1)
However, only half the traffic is reachable. Moreover, static routes isn't
allowed on the lab.
Appreciating any reply!
Regards,
H.
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This archive was generated by hypermail 2.1.4 : Tue Dec 03 2002 - 07:22:52 GMT-3