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Default route can't work on public network and private network with together on NE40 router

Publication Date:  2012-07-27 Views:  35 Downloads:  0
Issue Description
Topology:
SGSN--------Firewall(gig2/0/0)----------(old link)NE40(eth-trunk1)--------(E Voder core netwrok)
                    (gig3/0/0)----------(new link)     (gig4/0/1) --------(ISP netwrok)
use the default route on eth-trunk1 throught the publice netwrok. binding the inter vpn on gig4/0/1 use the default route on private network.
      
Version:
NE40&80 V300R005C01B281
Problem description:
Customer add the new link between the Firewall and NE40,Customer want separate the Internet traffic and SGSN roaming traffic from NE40 router.when the binding inter vpn for internet traffic and config the default route , all the SGSN server interrupt.
Alarm Information
null.
Handling Process
Null
Root Cause
we check the default route on the router, found default route on public network and private network.
[Chennai_Aircel_BG]dis ip rou 0.0.0.0 v
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Table : Public
Summary Count : 1
Destination: 0.0.0.0/0
     Protocol: Static          Process ID: 0
   Preference: 60                    Cost: 0
      NextHop: 10.178.8.26      Neighbour: 0.0.0.0
        State: Active Adv GotQ        Age: 00h00m21s
          Tag: 0                 Priority: 0
        Label: NULL               QoSInfo: 0x0
 RelayNextHop: 0.0.0.0          Interface: Eth-Trunk1
     TunnelID: 0x0                  Flags: RD
[Chennai_Aircel_BG]dis ip rou vpn internet_vpn 0.0.0.0 v
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Table : internet_vpn
Summary Count : 2
Destination: 0.0.0.0/0
     Protocol: BGP             Process ID: 0
   Preference: 255                   Cost: 0
      NextHop: 27.251.25.1      Neighbour: 27.251.25.1
        State: Inactive Adv GotQ      Age: 01h00m59s
          Tag: 0                 Priority: 0
        Label: NULL               QoSInfo: 0x0
 RelayNextHop: 0.0.0.0          Interface: GigabitEthernet4/0/1
     TunnelID: 0x0                  Flags: R
Suggestions
beacuse of this issue was know issue on current version V300R005C01B281, if we set the new  private default route on router,but this router aleardy to be have public default route, this problem will be happend.after upgrade the new version V300R005C01B323SPC003, This issue resloved.

END