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< li class = "toctree-l2" >< a class = "reference internal" href = "isis.html" > ISIS</ a ></ li >
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< section id = "lspgen" >
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< span id = "id1" ></ span >< h1 > LSPGEN< a class = "headerlink" href = "#lspgen" title = "Link to this heading" > </ a ></ h1 >
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< p > The BNG Blaster includes a tool called < code class = "docutils literal notranslate" >< span class = "pre" > lspgen</ span ></ code > which is able to generate
ISIS and OSPF topologies with the corresponding link state packets for export
as MRT and PCAP files. Initially, < code class = "docutils literal notranslate" >< span class = "pre" > lspgen</ span ></ code > was developed exclusively for ISIS,
hence its name. However, with the introduction of OSPF support in BNG Blaster,
< code class = "docutils literal notranslate" >< span class = "pre" > lspgen</ span ></ code > has been enhanced to accommodate OSPF topologies as well.</ p >
< p > The default protocol is ISIS which can be changed using the argument < code class = "docutils literal notranslate" >< span class = "pre" > -P</ span > < span class = "pre" > ospf2</ span ></ code > .</ p >
< div class = "highlight-none notranslate" >< div class = "highlight" >< pre >< span ></ span > $ lspgen --help
____ __ ____ _ __ ,/
/ __ \ / /_ / __ ) _____ (_)_____ / /__ ,' /
/ /_/ // __// __ |/ ___// // ___// //_/ ,' /
/ _, _// /_ / /_/ // / / // /__ / ,< ,' /_____,
/_/ |_| \__//_____//_/ /_/ \___//_/|_| .' ____ ,'
__ _____ ____ ______ / ,'
/ / / ___// __ \/ ____/__ ____ / ,'
/ / \__ \/ /_/ / / __/ _ \/ __ \ /,'
/ /______/ / ____/ /_/ / __/ / / / /
/_____/____/_/ \____/\___/_/ /_/
Usage: lspgen [OPTIONS]
-v --version
-a --area < args>
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-P --protocol isis|ospf2|ospf3
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-K --authentication-key < args>
-T --authentication-type none|simple|md5
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-r --read-config-file < filename>
-w --write-config-file < filename>
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-C --connector < args>
-S --control-socket < args>
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-l --ipv4-link-prefix < ip-prefix>
-L --ipv6-link-prefix < ip-prefix>
-n --ipv4-node-prefix < ip-prefix>
-N --ipv6-node-prefix < ip-prefix>
-x --ipv4-external-prefix < ip-prefix>
-X --ipv6-external-prefix < ip-prefix>
-u --link-multiplier < args>
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-M --lsp-lifetime < args>
-z --no-ipv4
-Z --no-ipv6
-y --no-sr
-e --external-count < args>
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-g --graphviz-file < filename>
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-h --help
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-m --mrt-file < filename>
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-c --node-count < args>
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-p --pcap-file < filename>
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-G --purge
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-f --stream-file < filename>
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-s --seed < args>
-q --sequence < args>
-Q --quit-loop
-V --level < args>
-t --log normal|debug|lsp|lsdb|packet|ctrl|error
</ pre ></ div >
</ div >
< p > You can generate random topologies or define a topology manually
using configuration files.</ p >
< section id = "connector" >
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< h2 > Connector< a class = "headerlink" href = "#connector" title = "Link to this heading" > </ a ></ h2 >
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< p > The connector (< code class = "docutils literal notranslate" >< span class = "pre" > -C</ span > < span class = "pre" > --connector</ span > < span class = "pre" > < args> </ span ></ code > ) represents the link between the generated
topology and the attached BNG Blaster instance.</ p >
< p > For ISIS topologies, the connector must be set to the < code class = "docutils literal notranslate" >< span class = "pre" > system-id</ span ></ code > of the ISIS
instance to which this topology is attached. In the BNG Blaster configuration,
the < code class = "docutils literal notranslate" >< span class = "pre" > system-id</ span ></ code > of the root node from the generated toplogy must be referenced.</ p >
< img alt = "ISIS" src = "../_images/bbl_isis.png" />
< div class = "highlight-none notranslate" >< div class = "highlight" >< pre >< span ></ span > $ lspgen -a 49.0001/24 -K secret123 -T md5 -C 1921.6800.1001 -m isis.mrt
...
Sep 04 10:50:55.780109 Generating a graph of 10 nodes and 20 links
Sep 04 10:50:55.780127 Root node 1921.6800.0000.00 (node1)
...
</ pre ></ div >
</ div >
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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 = "nt" > " isis" </ 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 >< span class = "nt" > " instance-id" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "mi" > 1</ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " area" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "p" > [</ span >
< span class = "w" > </ span >< span class = "s2" > " 49.0001/24" </ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "p" > ],</ span >
< span class = "w" > </ span >< span class = "nt" > " system-id" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " 1921.6800.1001" </ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " router-id" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " 192.168.1.1" </ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " hostname" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " R1" </ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " level1-auth-key" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " secret123" </ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " level1-auth-type" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " md5" </ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " external" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "p" > {</ span >
< span class = "w" > </ span >< span class = "nt" > " mrt-file" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " isis.mrt" </ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " connections" </ 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 >< span class = "nt" > " system-id" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " 1921.6800.0000.00" </ span >
< span class = "w" > </ 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 >< span class = "p" > }</ span >
< span class = "w" > </ span >< span class = "p" > ]</ span >
< span class = "p" > }</ span >
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</ pre ></ div >
</ div >
< p > This is simlar for OSPFv2 but here the connector is constructed based on remote router-id
and local link IPv4 address (< code class = "docutils literal notranslate" >< span class = "pre" > remote-router-id:local-ipv4-address</ span ></ code > ).</ p >
< img alt = "OSPF" src = "../_images/bbl_ospf.png" />
< div class = "highlight-none notranslate" >< div class = "highlight" >< pre >< span ></ span > $ lspgen -P ospf2 -m ospf.mrt -n 10.10.0.1 --connector " 10.0.0.11:10.0.0.2" -p lspgen.pcap
...
Sep 04 11:02:59.242810 Generating a graph of 10 nodes and 20 links
Sep 04 11:02:59.242827 Root node 10.10.0.1 (node1)
...
</ pre ></ div >
</ div >
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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 = "nt" > " ospf" </ 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 >< span class = "nt" > " instance-id" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "mi" > 1</ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " version" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "mi" > 2</ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " router-id" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " 10.0.0.11" </ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " hostname" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "nt" > " R1" </ span >
< span class = "w" > </ span >< span class = "nt" > " external" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "p" > {</ span >
< span class = "w" > </ span >< span class = "nt" > " mrt-file" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " ospf.mrt" </ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " connections" </ 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 >< span class = "nt" > " router-id" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " 10.10.0.1" </ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " local-ipv4-address" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " 10.0.0.1" </ 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 >< span class = "p" > }</ span >
< span class = "w" > </ span >< span class = "p" > }</ span >
< span class = "w" > </ span >< span class = "p" > ]</ span >
< span class = "p" > }</ span >
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</ pre ></ div >
</ div >
</ section >
< section id = "random-topologies" >
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< h2 > Random Topologies< a class = "headerlink" href = "#random-topologies" title = "Link to this heading" > </ a ></ h2 >
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< p > The following example generates a random topology with 1000 nodes.</ p >
< div class = "highlight-none notranslate" >< div class = "highlight" >< pre >< span ></ span > lspgen -m isis.mrt -c 1000 -K < secret> -T md5
</ pre ></ div >
</ div >
< p > The arguments < code class = "docutils literal notranslate" >< span class = "pre" > -K</ span ></ code > and < code class = "docutils literal notranslate" >< span class = "pre" > -T</ span ></ code > add a valid authentication TLV
to the generated LSPs in the MRT file.</ p >
< p > Those topologies could be even exported as configuration file
with the argument < code class = "docutils literal notranslate" >< span class = "pre" > -w</ span ></ code > and later imported with the argument < code class = "docutils literal notranslate" >< span class = "pre" > -r</ span ></ code > .
This allows the generation of a large random topology that can be modified
manually.</ p >
</ section >
< section id = "topology-from-configuration-file" >
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< h2 > Topology from Configuration File< a class = "headerlink" href = "#topology-from-configuration-file" title = "Link to this heading" > </ a ></ h2 >
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< p > In addition to randomly generated topologies, it is also possible to
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create them specifically using configuration. The following example
shows the configuration for a topology with three nodes.</ 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 = "nt" > " instance" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " default" </ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " protocol" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " isis" </ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " level1" </ 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 >< span class = "nt" > " node_id" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " 1337.0000.0001" </ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " hostname" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "s2" > " R1" </ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " area_list" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "p" > [</ span >
< span class = "w" > </ span >< span class = "s2" > " 49.1337/24" </ span >
< span class = "w" > </ span >< span class = "p" > ],</ span >
< span class = "w" > </ span >< span class = "nt" > " protocol_list" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "p" > [</ span >
< span class = "w" > </ span >< span class = "s2" > " ipv4" </ span >
< span class = "w" > </ span >< span class = "p" > ],</ span >
< span class = "w" > </ span >< span class = "nt" > " ipv4_address_list" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "p" > [</ span >
< span class = "w" > </ span >< span class = "s2" > " 10.13.37.1" </ span >
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</ pre ></ div >
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< p > The randomly generated topologies can be also written to a file
to have an example or starting point for the desired topologies.</ p >
< div class = "highlight-none notranslate" >< div class = "highlight" >< pre >< span ></ span > lspgen -P isis -w isis.json
lspgen -P ospf2 -w ospf2.json
lspgen -P ospf3 -w ospf3.json
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