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# BGP - AS Path Policy

VyOS provides policies commands exclusively for BGP traffic filtering and
manipulation: **as-path-list** is one of them.

## Configuration

### policy as-path-list

```{cfgcmd} set policy as-path-list \<text\>

Create as-path-policy identified by name `<text>`.
```
```{cfgcmd} set policy as-path-list \<text\> description \<text\>

Set description for as-path-list policy.
```
```{cfgcmd} set policy as-path-list \<text\> rule \<1-65535\> action \<permit|deny\>

Set action to take on entries matching this rule.
```
```{cfgcmd} set policy as-path-list \<text\> rule \<1-65535\> description \<text\>

Set description for rule.
```
```{cfgcmd} set policy as-path-list \<text\> rule \<1-65535\> regex \<text\>

Regular expression to match against an AS path. For example "64501 64502".
```