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CNA configuration and deployment
These commands will have to be repeated for each USTAT module/ISP pair; at which point the configuration would model the network shown in Figure 95.
Routing Configuration
Here, the routing to the USTAT VIPS are configured; the IBGP peering between the edge router and the CNA system is also configured
VIP Routing:
USTAT modules do not support dynamic routing protocols, so static routes will be used. On each edge router, you static routes are created to each of the CNA tunnels configured on that router.
In global config mode on the edge router Ra, the following Cisco IOS command is used:
ip route 172.25.5.1 255.255.255.255 Tunnel1
On the edge router Rb, the following Cisco IOS command is used:
ip route 172.25.5.2 255.255.255.255 Tunnel2
ip route 172.25.5.3 255.255.255.255 Tunnel3
The addresses are the VIPs assigned to each USTAT. Tunnel1 and Tunnel2 coexist on one edge router; Tunnel3 is alone on the other.
Note:
Note: In order to accommodate asymmetric
IBGP
On the edge router, the router bgp command is used with the enterprise’s Autonomous System Number:
router bgp 65002