Differences

This shows you the differences between two versions of the page.

--- wiki:bgp_ip_transit_info [2026/01/07 13:10] – [References] add references antisa
+++ wiki:bgp_ip_transit_info [2026/01/21 12:54] (current) – add Checking propagation antisa
@@ Line 125: / Line 125: @@
        valid_lft forever preferred_lft forever
 </code>
+<WRAP center round box 60%>
+Sometimes you might get an IP address from the private space from the provider like 10.255.0.2 for your side of the BGP session. You need to add it (via ''ip'', ''nmcli'' etc.) to your main interface for it to work e.g.
+<code>
+: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
+    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
+    inet 127.0.0.1/8 scope host lo
+       valid_lft forever preferred_lft forever
+    inet 89.124.253.5/32 scope global lo
+       valid_lft forever preferred_lft forever
+    inet6 2a03:c040::5/128 scope global
+       valid_lft forever preferred_lft forever
+    inet6 ::1/128 scope host
+       valid_lft forever preferred_lft forever
+: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
+    link/ether 5c:b9:01:90:1c:e8 brd ff:ff:ff:ff:ff:ff
+    inet 45.128.135.226/32 scope global noprefixroute eth0
+       valid_lft forever preferred_lft forever
+    inet 10.255.0.2/30 scope global eth0
+       valid_lft forever preferred_lft forever
+...
+# gobgp neighbor
+Peer            AS  Up/Down State       |#Received  Accepted
+.255.0.1  206804 00:00:55 Establ      |        1         1
+fd00:136::1 206804    never Active      |        0         0
+</code>
+</WRAP>
+===== Checking propagation =====
+Here's an example of Tzulo server provider which advertises to multiple upstreams
+https://bgp.he.net/AS11878#_graph4
+https://bgp.tools/as/11878#connectivity
+which has multiple arrows pointing to upstreams.
 ====== Tested on ======
@@ Line 136: / Line 175: @@
   * https://cs249i.stanford.edu/projects/project_1.pdf
   * https://www.noction.com/blog/bgp-anycast
+  * https://render.com/blog/how-to-build-an-anycast-network