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< li class = "toctree-l1" >< a class = "reference internal" href = "../install.html" > Installation</ a ></ li >
< li class = "toctree-l1" >< a class = "reference internal" href = "../quickstart.html" > Quickstart Guide</ a ></ li >
< li class = "toctree-l1" >< a class = "reference internal" href = "../interfaces.html" > Interfaces</ a ></ li >
< li class = "toctree-l1" >< a class = "reference internal" href = "../access/index.html" > Access Protocols</ a ></ li >
< li class = "toctree-l1 current" >< a class = "reference internal" href = "index.html" > Routing Protocols</ a >< ul class = "current" >
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< li class = "toctree-l2 current" >< a class = "current reference internal" href = "#" > BGP</ a >< ul >
< li class = "toctree-l3" >< a class = "reference internal" href = "#configuration" > Configuration</ a ></ li >
< li class = "toctree-l3" >< a class = "reference internal" href = "#bgp-sessions" > BGP Sessions</ a ></ li >
< li class = "toctree-l3" >< a class = "reference internal" href = "#limitations" > Limitations</ a ></ li >
< li class = "toctree-l3" >< a class = "reference internal" href = "#raw-update-files" > RAW Update Files</ a ></ li >
< li class = "toctree-l3" >< a class = "reference internal" href = "#bgp-raw-update-generator" > BGP RAW Update Generator</ a ></ li >
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< section id = "bgp" >
< span id = "id1" ></ span >< h1 > BGP< a class = "headerlink" href = "#bgp" title = "Permalink to this headline" > </ a ></ h1 >
< p > The Border Gateway Protocol (BGP) is a standardized exterior gateway protocol
designed to exchange routing and reachability information among autonomous systems
(AS) on the internet. BGP is classified as a path-vector routing protocol, and it
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makes routing decisions based on paths, network policies, or rule sets configured
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by a network operator.</ p >
< section id = "configuration" >
< h2 > Configuration< a class = "headerlink" href = "#configuration" title = "Permalink to this headline" > </ a ></ h2 >
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< p > Following is an example of a BGP configuration with one session.</ p >
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< div class = "highlight-json notranslate" >< div class = "highlight" >< pre >< span ></ span >< span class = "p" > {</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " interfaces" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "p" > {</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " network" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "p" > [</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "p" > {</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " interface" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " eth1" </ span >< span class = "p" > ,</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " address" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " 10.0.1.2/24" </ span >< span class = "p" > ,</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " gateway" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " 10.0.1.1" </ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "p" > }</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "p" > ]</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "p" > },</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " bgp" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "p" > [</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "p" > {</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " local-ipv4-address" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " 10.0.1.2" </ span >< span class = "p" > ,</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " peer-ipv4-address" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " 10.0.1.1" </ span >< span class = "p" > ,</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " raw-update-file" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " test.bgp" </ span >< span class = "p" > ,</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " local-as" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "mi" > 65001</ span >< span class = "p" > ,</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " peer-as" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "mi" > 65001</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "p" > }</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "p" > ]</ span >< span class = "w" ></ span >
< span class = "p" > }</ span >< span class = "w" ></ span >
</ pre ></ div >
</ div >
< div class = "highlight-json notranslate" >< div class = "highlight" >< pre >< span ></ span >< span class = "p" > {</ span >< span class = "w" > </ span >< span class = "nt" > " bgp" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "p" > {}</ span >< span class = "w" > </ span >< span class = "p" > }</ span >< span class = "w" ></ span >
</ pre ></ div >
</ div >
< table class = "colwidths-given docutils align-default" >
< colgroup >
< col style = "width: 25%" />
< col style = "width: 50%" />
< col style = "width: 25%" />
</ colgroup >
< thead >
< tr class = "row-odd" >< th class = "head" >< p > Attribute</ p ></ th >
< th class = "head" >< p > Description</ p ></ th >
< th class = "head" >< p > Default</ p ></ th >
</ tr >
</ thead >
< tbody >
< tr class = "row-even" >< td >< p >< cite > network-interface</ cite ></ p ></ td >
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< td >< p > BGP local interface (source interface)</ p ></ td >
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< td >< p > first network interface</ p ></ td >
</ tr >
< tr class = "row-odd" >< td >< p >< cite > local-ipv4-address</ cite ></ p ></ td >
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< td >< p > BGP local IPv4 address (source address)</ p ></ td >
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< td >< p > network interface address</ p ></ td >
</ tr >
< tr class = "row-even" >< td >< p >< cite > local-as</ cite ></ p ></ td >
< td >< p > BGP local AS</ p ></ td >
< td >< p > 65000</ p ></ td >
</ tr >
< tr class = "row-odd" >< td >< p >< cite > peer-ipv4-address</ cite ></ p ></ td >
< td >< p > BGP peer address</ p ></ td >
< td ></ td >
</ tr >
< tr class = "row-even" >< td >< p >< cite > peer-as</ cite ></ p ></ td >
< td >< p > BGP peer AS</ p ></ td >
< td >< p > local AS</ p ></ td >
</ tr >
< tr class = "row-odd" >< td >< p >< cite > holdtime</ cite ></ p ></ td >
< td >< p > BGP holdtime in seconds</ p ></ td >
< td >< p > 90</ p ></ td >
</ tr >
< tr class = "row-even" >< td >< p >< cite > id</ cite ></ p ></ td >
< td >< p > BGP identifier</ p ></ td >
< td >< p > 1.2.3.4</ p ></ td >
</ tr >
< tr class = "row-odd" >< td >< p >< cite > reconnect</ cite ></ p ></ td >
< td >< p > BGP reconnect</ p ></ td >
< td >< p > true</ p ></ td >
</ tr >
< tr class = "row-even" >< td >< p >< cite > start-traffic</ cite ></ p ></ td >
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< td >< p > BGP starts global traffic after RAW update</ p ></ td >
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< td >< p > false</ p ></ td >
</ tr >
< tr class = "row-odd" >< td >< p >< cite > teardown-time</ cite ></ p ></ td >
< td >< p > BGP teardown time in seconds</ p ></ td >
< td >< p > 5</ p ></ td >
</ tr >
< tr class = "row-even" >< td >< p >< cite > raw-update-file</ cite ></ p ></ td >
< td >< p > BGP RAW update file</ p ></ td >
< td ></ td >
</ tr >
</ tbody >
</ table >
</ section >
< section id = "bgp-sessions" >
< h2 > BGP Sessions< a class = "headerlink" href = "#bgp-sessions" title = "Permalink to this headline" > </ a ></ h2 >
< p > Every BGP session is opened with the capabilities for the following
address families:</ p >
< ul class = "simple" >
< li >< p > IPv4 unicast</ p ></ li >
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< li >< p > IPv4 labeled unicast</ p ></ li >
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< li >< p > IPv6 unicast</ p ></ li >
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< li >< p > IPv6 labeled unicast</ p ></ li >
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</ ul >
</ section >
< section id = "limitations" >
< h2 > Limitations< a class = "headerlink" href = "#limitations" title = "Permalink to this headline" > </ a ></ h2 >
< p > BGP authentication is currently not supported but already
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planned as an enhancement in one of the next releases.</ p >
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</ section >
< section id = "raw-update-files" >
< h2 > RAW Update Files< a class = "headerlink" href = "#raw-update-files" title = "Permalink to this headline" > </ a ></ h2 >
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< p > The BNG Blaster can inject BGP messages from a pre-compiled
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RAW update file into the defined sessions. A RAW update file is not
more than a pre-compiled binary stream of BGP messages, typically
but not limited to update messages.</ p >
< div class = "highlight-none notranslate" >< div class = "highlight" >< pre >< span ></ span > 0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ +
| |
+ +
| Marker |
+ +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length | Type | ...
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-++++
.
.
.
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ +
| |
+ +
| Marker |
+ +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length | Type | ...
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-++++
</ pre ></ div >
</ div >
< p > Those files can be created using the included BGP RAW update generator
script < code class = "docutils literal notranslate" >< span class = "pre" > bgpupdate</ span ></ code > or manually using libraries like scapy or converters
from PCAP or MRT files.</ p >
< p > The configured < code class = "docutils literal notranslate" >< span class = "pre" > raw-update-file</ span ></ code > under the BGP session is loaded
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during BNG Blaster startup phase and send it as soon as the session is
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established.</ p >
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< p > The < code class = "docutils literal notranslate" >< span class = "pre" > bgp-raw-update</ span ></ code > < a class = "reference internal" href = "../api/index.html#api" >< span class = "std std-ref" > command</ span ></ a > allows to send further updates during
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the session lifetime.</ p >
< p >< code class = "docutils literal notranslate" >< span class = "pre" > $</ span > < span class = "pre" > sudo</ span > < span class = "pre" > bngblaster-cli</ span > < span class = "pre" > run.sock</ span > < span class = "pre" > bgp-raw-update</ span > < span class = "pre" > file</ span > < span class = "pre" > update1.bgp</ span ></ code ></ p >
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< p > This allows loading a full table after the BGP session has
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started and manually trigger a series of changes using incremental
updates files.</ p >
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< p > All BGP RAW update files are loaded once and can then be used for
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multiple sessions. Meaning if two or more sessions reference the
same file identified by file name, this file is loaded once into
memory and used by multiple sessions.</ p >
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< p > Therefore for incremental updates, it may make sense to pre-load
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via < code class = "docutils literal notranslate" >< span class = "pre" > bgp-raw-update-files</ span ></ code > configuration.</ p >
< div class = "highlight-json notranslate" >< div class = "highlight" >< pre >< span ></ span >< span class = "p" > {</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " bgp" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "p" > [</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "p" > {</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " local-ipv4-address" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " 10.0.1.2" </ span >< span class = "p" > ,</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " peer-ipv4-address" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " 10.0.1.1" </ span >< span class = "p" > ,</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " raw-update-file" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " start.bgp" </ span >< span class = "p" > ,</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " local-as" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "mi" > 65001</ span >< span class = "p" > ,</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " peer-as" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "mi" > 65001</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "p" > }</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "p" > ],</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "nt" > " bgp-raw-update-files" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "p" > [</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "s2" > " update1.bgp" </ span >< span class = "p" > ,</ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "s2" > " update2.bgp" </ span >< span class = "w" ></ span >
< span class = "w" > </ span >< span class = "p" > ]</ span >< span class = "w" ></ span >
< span class = "p" > }</ span >< span class = "w" ></ span >
</ pre ></ div >
</ div >
< p > Incremental updates not listed here will be loaded dynamically as soon
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as referenced by the first session.</ p >
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</ section >
< section id = "bgp-raw-update-generator" >
< h2 > BGP RAW Update Generator< a class = "headerlink" href = "#bgp-raw-update-generator" title = "Permalink to this headline" > </ a ></ h2 >
< p > The BGP RAW update generator is a simple tool to generate BGP RAW update
streams for use with the BNG Blaster.</ p >
< div class = "highlight-none notranslate" >< div class = "highlight" >< pre >< span ></ span > $ bgpupdate --help
usage: bgpupdate [-h] [-a ASN] -n ADDRESS [-N N] -p PREFIX [-P N] [-m LABEL]
[-M N] [-l LOCAL_PREF] [-f FILE] [-w] [-s STREAMS]
[--stream-tx-label LABEL] [--stream-tx-inner-label LABEL]
[--stream-rx-label LABEL] [--stream-rx-label-num N]
[--stream-threads N] [--stream-pps N]
[--stream-interface IFACE] [--stream-append] [--end-of-rib]
[--append] [--pcap FILE] [--log-level {warning,info,debug}]
The BGP RAW update generator is a simple tool to generate BGP RAW update
streams for use with the BNG Blaster.
optional arguments:
-h, --help show this help message and exit
-a ASN, --asn ASN autonomous system number
-n ADDRESS, --next-hop-base ADDRESS
next-hop base address (IPv4 or IPv6)
-N N, --next-hop-num N
next-hop count
-p PREFIX, --prefix-base PREFIX
prefix base network (IPv4 or IPv6)
-P N, --prefix-num N prefix count
-m LABEL, --label-base LABEL
label base
-M N, --label-num N label count
-l LOCAL_PREF, --local-pref LOCAL_PREF
local preference
-f FILE, --file FILE output file
-w, --withdraw withdraw prefixes
-s STREAMS, --streams STREAMS
generate BNG Blaster traffic stream file
--stream-tx-label LABEL
stream TX outer label
--stream-tx-inner-label LABEL
stream TX inner label
--stream-rx-label LABEL
stream RX label
--stream-rx-label-num N
stream RX label count
--stream-threads N stream TX threads
--stream-pps N stream packets per seconds
--stream-interface IFACE
stream interface
--stream-append append to stream file if exist
--end-of-rib add end-of-rib message
--append append to file if exist
--pcap FILE write BGP updates to PCAP file
--log-level {warning,info,debug}
logging Level
</ pre ></ div >
</ div >
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< p > The python BGP RAW update generator is a python script that uses
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scapy to build BGP messages. Therefore this tool can be easily
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modified, extend or used as a blueprint for your own tools to generate
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valid BGP update streams.</ p >
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< p > The following example shows how to generate a BGP update stream
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with IPv4 and labeled IPv6 prefixes (6PE).</ p >
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< ul class = "simple" >
< li >< p > 100000 x IPv4 prefixes over 1000 next-hops</ p ></ li >
< li >< p > 50000 x IPv6 prefixes over 1000 next-hops with 1000 different labels (label per next-hop)</ p ></ li >
< li >< p > 50000 x IPv6 prefixes over 1000 next-hops with label 2</ p ></ li >
</ ul >
< div class = "highlight-none notranslate" >< div class = "highlight" >< pre >< span ></ span > bgpupdate -f test.bgp -a 65001 -n 10.0.0.1 -N 1000 -p 10.1.0.0/24 -P 100000
bgpupdate -f test.bgp -a 65001 -n 10.0.0.1 -N 1000 -m 20001 -M 1000 -p fc66:1::/48 -P 50000 --append
bgpupdate -f test.bgp -a 65001 -n 10.0.0.1 -N 1000 -m 2 -p fc66:2::/48 -P 50000 --append --end-of-rib
</ pre ></ div >
</ div >
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< p > Per default, the file is replaced but the option < cite > – </ cite > allows it to append to an existing file.
The last update to a file should include the option < cite > – </ cite > (optional).</ p >
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< p > The option < cite > – < file> </ cite > (< cite > -s</ cite > ) automatically generates corresponding traffic streams
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for all prefixes. Per default, this file is replaced but the option < cite > – </ cite > allows
appending to an existing file.</ p >
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< div class = "highlight-none notranslate" >< div class = "highlight" >< pre >< span ></ span > bgpupdate -f test.bgp -a 65001 -n 10.0.0.1 -N 1000 -p 10.1.0.0/24 -P 100000 -s streams.json
bgpupdate -f test.bgp -a 65001 -n 10.0.0.1 -N 1000 -m 20001 -M 1000 -p fc66:1::/48 -P 50000 --append -s streams.json --stream-append
bgpupdate -f test.bgp -a 65001 -n 10.0.0.1 -N 1000 -m 2 -p fc66:2::/48 -P 50000 --append --end-of-rib -s streams.json --stream-append
</ pre ></ div >
</ div >
< p > There are several options supported to further define the traffic streams like PPS and expected RX labels.</ p >
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