Cisco WAN :: 7200VXR - BGP Advertising Default Route In Mutihomed Network

Feb 25, 2011

I have Cisco 7200vxr doing BGP with 2 directly connected ISP's over ethernet. I am receiving default routes only, and have added a higher weight to my routes learned from my primary ISP. below is my configuration (ip addresses changed of course)
 
router bgp 100 no synchronization bgp router-id x.x.x.x bgp log-neighbor-changes network 100.100.64.0 mask 255.255.254.0 network 100.100.71.0 network 100.100.78.0 mask 255.255.254.0
neighbor <ISP_A-IP> remote-as 200  neighbor <ISP_A-IP> weight 175 neighbor <ISP_B-IP> remote-as 300  neighbor <ISP_B-IP> weight 150 auto-summary
 
Advertising my rotues to the primary ISP is fine
 
7206vxr.rb#sh ip bgp neighbors <ISP_A-IP> advertised-routesBGP table version is 7, local router ID is x.x.x.xStatus codes: s suppressed, d damped, h history, * valid, > best, i - internal,              r RIB-failure, S StaleOrigin codes: i - IGP, e - EGP, ? - incomplete
 
   Network          Next Hop            Metric LocPrf Weight Path*> 100.100.64.0/23   0.0.0.0                  0         32768 i*> 100.100.71.0      100.100.64.57             0         32768 i*> 100.100.78.0   0.0.0.0                  0         32768 i
 Total number of prefixes 3
 
However, advertisements to the secondary ISP inlcludes the defautl route learned from the primary 7206vxr.rb#sh ip bgp neighbors <ISP_B-IP> advertised-routes BGP table version is 7, local router ID is x.x.x.x Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,               r RIB-failure, S Stale Origin codes: i - IGP, e - EGP, ? - incomplete
 
   Network          Next Hop            Metric LocPrf Weight Path
*> 0.0.0.0          <ISP_A-IP> *> 100.100.64.0/23   0.0.0.0                  0         32768 i*> 100.100.71.0      100.100.64.57             0         32768 i*> 100.100.78.0   0.0.0.0                  0         32768 i
 
Should I not just only be advertising just the networks that i specified in my configuration?

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