10-16-2020 06:41 AM
Hello,
I want to set up a full view with my transit provider
My transit provider tells me about 700,000 routes, but after 5 minutes I only have 455,000 routes added to my router.
I do not see where is the blocked?
router bgp 0001
bgp router-id 194.XXX.XX.X
bgp log-neighbor-changes
neighbor IPV6:IPV6::33:0:6 remote-as 0002
neighbor IPV6:IPV6::33:0:6 description my provider transit
neighbor IPV6:IPV6::33:0:6 shutdown
neighbor XXX.XXX.XXX.169 remote-as 0002
neighbor XXX.XXX.XXX.169 description my provider transit
!
address-family ipv4
network 194.XXX.XX.0 mask 255.255.252.0
network 194.XXX.XX.0 mask 255.255.255.240
network 194.XXX.XX.32 mask 255.255.255.224
no neighbor IPV6:IPV6::33:0:6 activate
neighbor XXX.XXX.XXX.169 activate
neighbor XXX.XXX.XXX.169 next-hop-self
neighbor XXX.XXX.XXX.169 remove-private-as
neighbor XXX.XXX.XXX.169 soft-reconfiguration inbound
neighbor XXX.XXX.XXX.169 prefix-list PFX-LZI out
exit-address-family
!
address-family ipv6
neighbor IPV6:IPV6::33:0:6 activate
neighbor IPV6:IPV6::33:0:6 next-hop-self
neighbor IPV6:IPV6::33:0:6 remove-private-as
neighbor IPV6:IPV6::33:0:6 soft-reconfiguration inbound
neighbor IPV6:IPV6::33:0:6 prefix-list PFX-V6-LVI out
exit-address-family
!
ip forward-protocol nd
no ip http server
no ip http secure-server
ip route 194.XXX.XXX.XXX 255.255.252.0 Null0
!
ip bgp-community new-format
ip as-path access-list 1 permit ^$
Solved! Go to Solution.
10-16-2020 12:45 PM
Until you are a transit provider you do not as many routes - you only required to play your own subnet when you want to have prefered path or asymmetric route ..so on.
@paul driver thanks for agreeing my views and appreciated your inputs.
10-16-2020 03:54 PM
Finally I dig out what issue here,
You share config of Peer AS 0001 and then share output in AS 0002,
so friend your issue is
permit ^$ with out direction from AS 0001 toward AS 0002,
this will only permit the Perfix of AS 0001 to advertise toward the AS 0002.
just change it and see result.
good luck.
10-16-2020 04:17 PM - edited 10-21-2020 04:40 PM
Finally I fig out what issue here,
You share config of Peer AS 0001 and then share output in AS 0002,
so friend your issue is
permit ^$ with out direction from AS 0001 toward AS 0002,
this will only permit the Prefix within AS 0001 to advertise toward the AS 0002.
just change it and see result.
good luck.
10-17-2020 04:59 AM
Hello
@MHM Cisco World The permit ^$ expression set egress will advertise only locally originated routes from the OP's site to each ISP, which is a good thing as this negates the OP's site from becoming a transit path for either ISP, so you wouldn't want to change this?
10-17-2020 05:07 AM
Thanks a lot for your reply,
he want 700,000 prefix to be forward from AS 0001 to AS 0002, but he miss some prefix in AS 0002
so the only filter here to filter the 700,000 in AS 0001 is as_path via ^$ , which make AS 0001 only send the prefix that contain the AS 0001 in path toward AS 0002.
Thanks a gain
10-17-2020 05:15 AM
Hello
@MHM Cisco World My understanding the OP wants to receive 700k+ routes not advertise them and in anycase why would the OP want to advertised 700K+ routes to an ISP? - Doesn't make sense TBH.
10-17-2020 05:20 AM - edited 10-17-2020 05:22 AM
Yes I know he want to receive 700K+, but he share the config of AS 0001 not AS 0002,
so we work in information we have.
and why he need this huge I think it is for monitor, he can make PE send this prefix to other router and in this router he can monitor all prefix learn.
so let us wait him answer for this question because only SP router need this huge prefix.
02-11-2021 05:06 AM
Hello,
I come back to you for my problem. Finally after trying again, we encountered the problem.
My router did not see all the routes that my ISP was announcing to me when I did a show ip route after 30 minutes. I made a clear bgp and the all routes were added to my router. So everything works for the full view now.
02-11-2021 08:36 AM
So issue solved without change the path list filter?
02-11-2021 11:27 AM
10-16-2020 04:36 PM
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