Can I announce prefix 161.117.25.0/24 even though I don't have all of /24 IPsHow can hosts with public IP...
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Can I announce prefix 161.117.25.0/24 even though I don't have all of /24 IPs
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Can I announce prefix 161.117.25.0/24 even though I don't have all of /24 IPs
How can hosts with public IP addresses have nodes with private IP addresses in their traceroute?BGP - how does IGP know the right route?BGP - use prefix on 2 locationsPreferred anycast paths for DNS with Quagga BGPProblem with ibgp configurationDefining hierarchical BGP route-mapsBird BGP routing to iBGP router with prefix segmentation from /22 to four /24Internal BGP routing issue BIRDHot Potato, algorithm of selecting route in routerQuagga - Configure 3 routers using OSPF
I'm managing one BGP router, under the router I'm trying to announce the following IP prefix:161.117.25.0/24. But the problem is that some of the IP addresses were borrowed by other AS(Autonomous System), for example the IP address 161.117.25.100 and 161.117.25.200 were borrowed by other AS. So how should I announce the remaining IP addresses please.
router bgp
edited 55 mins ago
Cown
6,26131030
asked 59 mins ago
JackJack
1594
add a comment |
I'm managing one BGP router, under the router I'm trying to announce the following IP prefix:161.117.25.0/24. But the problem is that some of the IP addresses were borrowed by other AS(Autonomous System), for example the IP address 161.117.25.100 and 161.117.25.200 were borrowed by other AS. So how should I announce the remaining IP addresses please.
router bgp
edited 55 mins ago
Cown
6,26131030
asked 59 mins ago
JackJack
1594
add a comment |
I'm managing one BGP router, under the router I'm trying to announce the following IP prefix:161.117.25.0/24. But the problem is that some of the IP addresses were borrowed by other AS(Autonomous System), for example the IP address 161.117.25.100 and 161.117.25.200 were borrowed by other AS. So how should I announce the remaining IP addresses please.
router bgp
edited 55 mins ago
Cown
6,26131030
asked 59 mins ago
JackJack
1594
I'm managing one BGP router, under the router I'm trying to announce the following IP prefix:161.117.25.0/24. But the problem is that some of the IP addresses were borrowed by other AS(Autonomous System), for example the IP address 161.117.25.100 and 161.117.25.200 were borrowed by other AS. So how should I announce the remaining IP addresses please.
router bgp
router bgp
edited 55 mins ago
Cown
6,26131030
asked 59 mins ago
JackJack
1594
edited 55 mins ago
Cown
6,26131030
asked 59 mins ago
JackJack
1594
edited 55 mins ago
Cown
6,26131030
edited 55 mins ago
Cown
6,26131030
edited 55 mins ago
Cown
6,26131030
6,26131030
asked 59 mins ago
JackJack
1594
asked 59 mins ago
JackJack
1594
asked 59 mins ago
JackJack
1594
1594
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
That /24 is part of a larger block (161.117.0.0/16) which is assigned to Alibabacom Singapore and announced by AS45102 (which is Alibaba again). My guess is that you're a customer of them and have been assigned a number of IP addresses to use from that /24. However, that does not give you the right to advertise them under your own ASN in BGP. If you do so, it would be considered a BGP Hijack.
Hopefully, it wouldn't work very well due to filters in place at upstream networks, but if it would, IP addresses in that /24 used by others would become unreachable.
The conclusion here is: you don't announce the /24 unless you're authorized to do so.
answered 47 mins ago
Teun Vink♦Teun Vink
11.6k53053
add a comment |
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1 Answer
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1 Answer
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active
oldest
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oldest
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active
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votes
That /24 is part of a larger block (161.117.0.0/16) which is assigned to Alibabacom Singapore and announced by AS45102 (which is Alibaba again). My guess is that you're a customer of them and have been assigned a number of IP addresses to use from that /24. However, that does not give you the right to advertise them under your own ASN in BGP. If you do so, it would be considered a BGP Hijack.
Hopefully, it wouldn't work very well due to filters in place at upstream networks, but if it would, IP addresses in that /24 used by others would become unreachable.
The conclusion here is: you don't announce the /24 unless you're authorized to do so.
answered 47 mins ago
Teun Vink♦Teun Vink
11.6k53053
add a comment |
That /24 is part of a larger block (161.117.0.0/16) which is assigned to Alibabacom Singapore and announced by AS45102 (which is Alibaba again). My guess is that you're a customer of them and have been assigned a number of IP addresses to use from that /24. However, that does not give you the right to advertise them under your own ASN in BGP. If you do so, it would be considered a BGP Hijack.
Hopefully, it wouldn't work very well due to filters in place at upstream networks, but if it would, IP addresses in that /24 used by others would become unreachable.
The conclusion here is: you don't announce the /24 unless you're authorized to do so.
answered 47 mins ago
Teun Vink♦Teun Vink
11.6k53053
add a comment |
That /24 is part of a larger block (161.117.0.0/16) which is assigned to Alibabacom Singapore and announced by AS45102 (which is Alibaba again). My guess is that you're a customer of them and have been assigned a number of IP addresses to use from that /24. However, that does not give you the right to advertise them under your own ASN in BGP. If you do so, it would be considered a BGP Hijack.
Hopefully, it wouldn't work very well due to filters in place at upstream networks, but if it would, IP addresses in that /24 used by others would become unreachable.
The conclusion here is: you don't announce the /24 unless you're authorized to do so.
answered 47 mins ago
Teun Vink♦Teun Vink
11.6k53053
That /24 is part of a larger block (161.117.0.0/16) which is assigned to Alibabacom Singapore and announced by AS45102 (which is Alibaba again). My guess is that you're a customer of them and have been assigned a number of IP addresses to use from that /24. However, that does not give you the right to advertise them under your own ASN in BGP. If you do so, it would be considered a BGP Hijack.
Hopefully, it wouldn't work very well due to filters in place at upstream networks, but if it would, IP addresses in that /24 used by others would become unreachable.
The conclusion here is: you don't announce the /24 unless you're authorized to do so.
answered 47 mins ago
Teun Vink♦Teun Vink
11.6k53053
answered 47 mins ago
Teun Vink♦Teun Vink
11.6k53053
answered 47 mins ago
Teun Vink♦Teun Vink
11.6k53053
answered 47 mins ago
Teun Vink♦Teun Vink
11.6k53053
11.6k53053
add a comment |
add a comment |
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