[blog/peerindex-released] Add peerindex announcement

content/blog/peerindex-released.md

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+---
+title: "New Micro BGP Suite utility peerindex now released!"
+mobile_menu_title: "New utility peerindex is out!"
+date: 2021-07-27
+description: "The DoubleFourteen Code Forge is happy to announce that ubgpsuite has a new utility: peerindex!"
+series: [ "ubgpsuite - The Micro BGP Suite" ]
+categories: [ "news", "development" ]
+tags: [ "ubgpsuite", "peerindex", "bgpscanner", "C Language", "Networking", "BGP" ]
+news_keywords: [ "ubgpsuite", "peerindex", "bgpscanner" ]
+---
+
+## The Micro BGP Suite has a new utility: *peerindex*
+
+I am happy to announce that *µbgpsuite* has a new tool in its arsenal, *peerindex*.
+
+[peerindex](https://git.doublefourteen.io/bgp/ubgpsuite/src/branch/master/tools/peerindex)
+is a simple PEER INDEX TABLE inspection tool documented in its own gorgeous `man` [page](https://git.doublefourteen.io/bgp/ubgpsuite/src/branch/master/tools/peerindex/peerindex.1.in).
+
+When implementing *bgpgrep*, I removed any functionality not strictly related to BGP filtering dump,
+this included the PEER INDEX TABLE inspection feature previously provided by *bgpscanner*, that is:
+```sh
+$ bgpscanner -f
+```
+
+This command used to display every PEER INDEX TABLE entry referenced by at least one RIB entry.
+It was a useful tool to quickly recognize which peers populated a RIB dump.
+
+*µbgpsuite* will get a dedicated tool for this task, the main topic of this article: *peerindex*.
+
+In addition to showing only the referenced peers inside PEER INDEX TABLE, it can
+also dump the full table as is.
+
+> **Hint** -- as always, you can get a convenient PDF version of the manual page, like this:
+> ```sh
+> $ sed s/@UTILITY@/peerindex/g tools/peerindex/peerindex.1.in | groffer
+> ```
+>
+> Don't you love man pages? ☺
+
+Enjoy, and happy hacking,
+
+Lorenzo Cogotti
+