[c-nsp] BGP route not pre-empting floating static, sometimes

[Chris Hunt]

Gurus,
    I'm having trouble getting BGP to preempt a floating static route. 
The situation looks like this, I've got two paths from our colo to a
network at remote site (4.4.4.0/24 in this lab example): one metro
ethernet and one DSL , both inside a vrf.  We're running BGP over the
metro ethernet circuit and just using a floating static in case the
ethernet fails and BGP goes down. That seems to work OK:
router-1#show ip route vrf TestCo 4.4.4.0
Routing entry for 4.4.4.0/24
  Known via "bgp 65517", distance 20, metric 0
  Tag 65000, type external
  Last update from 10.180.3.2 00:00:01 ago
  Routing Descriptor Blocks:
  * 10.180.3.2, from 10.180.3.2, 00:00:01 ago
      Route metric is 0, traffic share count is 1
      AS Hops 1
      Route tag 65000


When the ethernet fails, the BGP adjacency goes down the floating static
pops up in the FIB:
Routing entry for 4.4.4.0/24
  Known via "static", distance 254, metric 0
  Redistributing via bgp 65517
  Advertised by bgp 65517
  Routing Descriptor Blocks:
  * 192.168.100.14
      Route metric is 0, traffic share count is 1


Then when I bring up the Ethernet link, BGP establishes, and the colo
router receives the advertisement:
router-1#show ip bgp vpnv4 vrf TestCo neighbors 10.180.3.2 routes
BGP table version is 392820, local router ID is 172.16.0.241
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
Route Distinguisher: 200:1 (default for vrf TestCo)
*  4.4.4.0/24       10.180.3.2               0             0 65000 i

Total number of prefixes 1

router-1#show ip bgp vpnv4 vrf TestCo 4.4.4.0
BGP routing table entry for 200:1:4.4.4.0/24, version 392815
Paths: (2 available, best #2, table TestCo)
  Advertised to update-groups:
     4          6        
  65000
    10.180.3.2 from 10.180.3.2 (10.180.3.2)
      Origin IGP, metric 0, localpref 100, valid, external
      Extended Community: RT:200:1
      mpls labels in/out 376/nolabel
  Local
    192.168.100.14 from 0.0.0.0 (x.x.x.241)
      Origin incomplete, metric 0, localpref 100, weight 32768, valid,
sourced, best
      Extended Community: RT:200:1
      mpls labels in/out 376/nolabel



But it does not pre-empt the floating static in the FIB:
router-1#show ip ro vrf TestCo 4.4.4.0                                    
Routing entry for 4.4.4.0/24
  Known via "static", distance 254, metric 0
  Redistributing via bgp 65517
  Advertised by bgp 65517
  Routing Descriptor Blocks:
  * 192.168.100.14
      Route metric is 0, traffic share count is 1


If i then clear the PPPoE session, the BGP route pops into the FIB and
we start all over:
router-1#show ip route vrf TestCo 4.4.4.0
Routing entry for 4.4.4.0/24
  Known via "bgp 65517", distance 20, metric 0
  Tag 65000, type external
  Last update from 10.180.3.2 00:00:01 ago
  Routing Descriptor Blocks:
  * 10.180.3.2, from 10.180.3.2, 00:00:01 ago
      Route metric is 0, traffic share count is 1
      AS Hops 1
      Route tag 65000


Any ideas what I'm doing wrong?  Here's the config for the remote office:
router bgp 65000
 no synchronization
 bgp router-id 10.180.3.2
 bgp log-neighbor-changes
 network 4.4.4.0 mask 255.255.255.0
 neighbor 10.180.3.1 remote-as 65517
 neighbor 10.180.3.1 update-source GigabitEthernet0/0
 no auto-summary

And the colo config (7206VXR):
 address-family ipv4 vrf TestCo
 redistribute connected
 redistribute static
 neighbor 10.180.3.2 remote-as 65000
 neighbor 10.180.3.2 update-source GigabitEthernet0/2.690
 neighbor 10.180.3.2 activate
 neighbor 10.180.3.2 next-hop-self
 neighbor 10.180.3.2 default-originate
 no synchronization
 exit-address-family