diff options
Diffstat (limited to 'docs/sources/ebgp-multihop.md')
| -rw-r--r-- | docs/sources/ebgp-multihop.md | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/docs/sources/ebgp-multihop.md b/docs/sources/ebgp-multihop.md index 8770daf7..d30069fc 100644 --- a/docs/sources/ebgp-multihop.md +++ b/docs/sources/ebgp-multihop.md @@ -5,14 +5,14 @@ BGP (eBGP) peers are not directly connected and multiple IP hops away. ## Prerequisites -Assume you finished [Getting Started](https://github.com/osrg/gobgp/blob/master/docs/sources/getting-started.md). +Assume you finished [Getting Started](getting-started.md). ## Contents -- [Configuration](#section0) -- [Verification](#section1) +- [Configuration](#configuration) +- [Verification](#verification) -## <a name="section0"> Configuration +## Configuration If eBGP neighbor "10.0.0.2" is 2 hops away, you need to configure `[neighbors.ebgp-multihop.config]` with `multihop-ttl >= 3` in @@ -33,15 +33,15 @@ router-id = "10.0.0.1" ``` **NOTE:** eBGP Multihop feature is mututally exclusive with -[TTL Security](https://github.com/osrg/gobgp/blob/master/docs/sources/ttl-security.md). +[TTL Security](ttl-security.md). These features cannot be configured for the same neighbor. -## <a name="section1"> Verification +## Verification Without eBGP multihop configuration, the default TTL for eBGP session is 1, and GoBGP cannot reach the neighbor on 2 hops away. -``` +```bash $ gobgpd -f gobgpd.toml {"level":"info","msg":"gobgpd started","time":"YYYY-MM-DDTHH:mm:ss+09:00"} {"Topic":"Config","level":"info","msg":"Finished reading the config file","time":"YYYY-MM-DDTHH:mm:ss+09:00"} @@ -50,7 +50,7 @@ $ gobgpd -f gobgpd.toml ...(No connection)... ``` -``` +```bash $ tcpdump -i ethXX tcp -v tcpdump: listening on ethXX, link-type EN10MB (Ethernet), capture size 262144 bytes hh:mm:ss IP (tos 0x0, ttl 1, id 19110, offset 0, flags [DF], proto TCP (6), length 60) @@ -65,7 +65,7 @@ hh:mm:ss IP (tos 0x0, ttl 1, id 19112, offset 0, flags [DF], proto TCP (6), leng With eBGP multihop configuration, GoBGP will set the given TTL for eBGP session and successfully connect to the neighbor on 2 hops away. -``` +```bash $ gobgpd -f gobgpd.toml {"level":"info","msg":"gobgpd started","time":"YYYY-MM-DDTHH:mm:ss+09:00"} {"Topic":"Config","level":"info","msg":"Finished reading the config file","time":"YYYY-MM-DDTHH:mm:ss+09:00"} @@ -75,7 +75,7 @@ $ gobgpd -f gobgpd.toml ...(snip)... ``` -``` +```bash $ tcpdump -i ethXX tcp -v tcpdump: listening on ethXX, link-type EN10MB (Ethernet), capture size 262144 bytes hh:mm:ss IP (tos 0x0, ttl 3, id 31155, offset 0, flags [DF], proto TCP (6), length 60) |