06-25-2012 03:03 AM
Hi all, Thats me again!
I have a simple lab and I have couple of cisco 7206 vxr g2 and one cisco asr 9006. I can try to bgp configration for asr 9006 to vxr 7206.
I want to receive full table for the isp. after that I want to send my bgp peer this full table. Configrations are below.
ASR9006
!
route-policy Accept-All
pass
end-policy
!
router bgp 100
bgp router-id 192.168.96.92
address-family ipv4 unicast
network 192.168.103.0/24
!
neighbor 192.168.96.1
remote-as 100
update-source MgmtEth0/RSP0/CPU0/0
address-family ipv4 unicast
route-policy Accept-All in
route-policy Accept-All out
!
!
neighbor 192.168.96.4
remote-as 100
update-source MgmtEth0/RSP0/CPU0/0
address-family ipv4 unicast
route-policy Accept-All in
route-policy Accept-All out
!
!
!
RP/0/RSP1/CPU0:#sh bgp summary
Mon Jun 25 11:44:19.645 GMT
BGP router identifier 192.168.96.92, local AS number 100
BGP generic scan interval 60 secs
BGP table state: Active
Table ID: 0xe0000000 RD version: 184
BGP main routing table version 184
BGP scan interval 60 secs
BGP is operating in STANDALONE mode.
Process RcvTblVer bRIB/RIB LabelVer ImportVer SendTblVer StandbyVer
Speaker 184 184 184 184 184 184
Neighbor Spk AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down St/PfxRcd
192.168.96.1 0 100 156761 26 184 0 0 00:10:50 427521
192.168.96.4 0 100 93 91 184 0 0 00:11:31 0
RP/0/RSP1/CPU0:#
RP/0/RSP1/CPU0:#sh bgp neighbor 192.168.96.4 advertised-routes
Mon Jun 25 11:44:59.487 GMT
Network Next Hop From AS Path
192.168.103.0/24 192.168.96.92 Local i
Processed 1 prefixes, 1 paths
RP/0/RSP1/CPU0:#
I can receive 192.168.96.1 for the full table.
Cisco 7206 VXR G2_2
!
router bgp 100
no synchronization
bgp router-id 192.168.96.4
bgp log-neighbor-changes
neighbor 192.168.96.92 remote-as 100
neighbor 192.168.96.92 update-source GigabitEthernet0/1.1
no auto-summary
!
7206VXR_G2_2#sh ip bgp summary
BGP router identifier 192.168.96.4, local AS number 100
BGP table version is 12, main routing table version 12
1 network entries using 121 bytes of memory
1 path entries using 52 bytes of memory
2/1 BGP path/bestpath attribute entries using 152 bytes of memory
0 BGP route-map cache entries using 0 bytes of memory
0 BGP filter-list cache entries using 0 bytes of memory
BGP using 325 total bytes of memory
BGP activity 6/5 prefixes, 9/8 paths, scan interval 60 secs
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
192.168.96.92 4 100 14 15 12 0 0 00:10:55 1
7206VXR_G2_2#
7206VXR_G2_2#sh ip bgp
BGP table version is 12, local router ID is 192.168.96.4
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
*>i192.168.103.0 192.168.96.92 0 100 0 i
7206VXR_G2_2#
I can advertised to 192.168.103.0/24 networks. I can receive full table vxr_7206_1. but I don't advertise to full table to vxr_7206_2.
I read the cisco configrations guide for asr 9000 series alot of times. But I didn't see subject or example "how to send full bgp table".
Please advice me? How can I do this?
Solved! Go to Solution.
06-25-2012 12:28 PM
Hello Umit,
If I properly understand you want to test your connection towards ISP and BGP route exchange. I would assume your ISP uses different BGP AS compare to yours. In this current setup I see ASR9k and 7200 have the same BGP AS meaning this is iBGP. In this case we have to have full mesh between iBGP peers as routes are not sent back to other iBGP peers.
I don’t know which exactly 7200 emulates ISP, but we need to configure eBGP between ASR9k and that 7200 (different BGP AS).
Note, you use “update-source MgmtEth0/RSP0/CPU0/0”. That is not recommended as there is no routing between management and other forwarding interfaces. Configure a loopback and use as an update-source.
Regards,
/A
06-25-2012 12:28 PM
Hello Umit,
If I properly understand you want to test your connection towards ISP and BGP route exchange. I would assume your ISP uses different BGP AS compare to yours. In this current setup I see ASR9k and 7200 have the same BGP AS meaning this is iBGP. In this case we have to have full mesh between iBGP peers as routes are not sent back to other iBGP peers.
I don’t know which exactly 7200 emulates ISP, but we need to configure eBGP between ASR9k and that 7200 (different BGP AS).
Note, you use “update-source MgmtEth0/RSP0/CPU0/0”. That is not recommended as there is no routing between management and other forwarding interfaces. Configure a loopback and use as an update-source.
Regards,
/A
06-25-2012 01:07 PM
Alexei you are right. My false.
I changed to local as number for the isps. And this problem fixed. I can receive route table.
Thank you for your kind support.
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