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test: Verify routing preference 255 is inactive

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Fixes #784
This commit is contained in:
Ahmed Karic
2024-11-26 15:29:32 +01:00
parent e9efd224f7
commit d9eae887a0
6 changed files with 271 additions and 0 deletions
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test/case/ietf_routing/Readme.adoc
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@@ -17,3 +17,5 @@ include::ospf_bfd/Readme.adoc[]
include::route_pref_ospf/Readme.adoc[]
include::route_pref_dhcp/Readme.adoc[]
include::route_pref_255/Readme.adoc[]
test/case/ietf_routing/ietf_routing.yaml
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@@ -19,3 +19,6 @@
- name: route_pref_dhcp
case: route_pref_dhcp/test.py
- name: route_pref_255
case: route_pref_255/test.py
test/case/ietf_routing/route_pref_255/Readme.adoc
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@@ -0,0 +1,29 @@
=== Route preference: Static Route Activation and Maximum Distance
==== Description
This test configures a device with a static route to a destination with
a moderate routing preference (254), verifying that it becomes active.
Then, the routing preference is increased to the maximum value (255),
which should prevent the route from becoming active.
==== Topology
ifdef::topdoc[]
image::../../test/case/ietf_routing/route_pref_255/topology.svg[Route preference: Static Route Activation and Maximum Distance topology]
endif::topdoc[]
ifndef::topdoc[]
ifdef::testgroup[]
image::route_pref_255/topology.svg[Route preference: Static Route Activation and Maximum Distance topology]
endif::testgroup[]
ifndef::testgroup[]
image::topology.svg[Route preference: Static Route Activation and Maximum Distance topology]
endif::testgroup[]
endif::topdoc[]
==== Test sequence
. Set up topology and attach to target DUTs
. Configure targets with active static route
. Verify that static route with preference 254 is active
. Update static route preference to 255
. Verify that high-preference static route (255) does not become active
<<<
test/case/ietf_routing/route_pref_255/test.py
Executable
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@@ -0,0 +1,118 @@
#!/usr/bin/env python3
"""
Route preference: Static Route Activation and Maximum Distance
This test configures a device with a static route to a destination with
a moderate routing preference (254), verifying that it becomes active.
Then, the routing preference is increased to the maximum value (255),
which should prevent the route from becoming active.
"""
import infamy
import infamy.route as route
from infamy.util import until, parallel
def configure_interface(name, ip, prefix_length, forwarding=True):
return {
"name": name,
"enabled": True,
"ipv4": {
"forwarding": forwarding,
"address": [{"ip": ip, "prefix-length": prefix_length}]
}
}
def config_target1_initial(target, data, link):
target.put_config_dicts({
"ietf-interfaces": {
"interfaces": {
"interface": [
configure_interface(data, "192.168.10.1", 24),
configure_interface(link, "192.168.50.1", 24)
]
}
},
"ietf-routing": {
"routing": {
"control-plane-protocols": {
"control-plane-protocol": [
{
"type": "infix-routing:static",
"name": "default",
"static-routes": {
"ipv4": {
"route": [{
"destination-prefix": "192.168.20.0/24",
"next-hop": {"next-hop-address": "192.168.50.2"},
"route-preference": 254
}]
}
}
}
]
}
}
}
})
def config_target1_update(target):
target.put_config_dicts({
"ietf-routing": {
"routing": {
"control-plane-protocols": {
"control-plane-protocol": [
{
"type": "infix-routing:static",
"name": "default",
"static-routes": {
"ipv4": {
"route": [{
"destination-prefix": "192.168.20.0/24",
"next-hop": {"next-hop-address": "192.168.50.2"},
"route-preference": 255
}]
}
}
}
]
}
}
}
})
def config_target2(target, data, link):
target.put_config_dicts({
"ietf-interfaces": {
"interfaces": {
"interface": [
configure_interface(data, "192.168.20.2", 24),
configure_interface(link, "192.168.50.2", 24)
]
}
}
})
with infamy.Test() as test:
with test.step("Set up topology and attach to target DUTs"):
env = infamy.Env()
R1 = env.attach("R1", "mgmt")
R2 = env.attach("R2", "mgmt")
with test.step("Configure targets with active static route"):
_, R1data = env.ltop.xlate("R1", "data")
_, R1link = env.ltop.xlate("R1", "link")
_, R2data = env.ltop.xlate("R2", "data")
_, R2link = env.ltop.xlate("R2", "link")
parallel(config_target1_initial(R1, R1data, R1link), config_target2(R2, R2data, R2link))
with test.step("Verify that static route with preference 254 is active"):
until(lambda: route.ipv4_route_exist(R1, "192.168.20.0/24", proto="ietf-routing:static", active_check=True))
with test.step("Update static route preference to 255"):
config_target1_update(R1)
with test.step("Verify that high-preference static route (255) does not become active"):
until(lambda: not route.ipv4_route_exist(R1, "192.168.20.0/24", proto="ietf-routing:static", active_check=True))
test.succeed()
test/case/ietf_routing/route_pref_255/topology.dot
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graph "route-preference" {
layout="neato";
overlap="false";
esep="+20";
size=10
node [shape=record, fontname="DejaVu Sans Mono, Book"];
edge [color="cornflowerblue", penwidth="2", fontname="DejaVu Serif, Book"];
PC
[
label="PC | { <mgmt1> mgmt1 | <data1> data1 | <data2> data2 | <mgmt2> mgmt2 }",
pos="20,58!",
kind="controller",
];
R1
[
label="{ <mgmt> mgmt | <data> data | <link> link } | R1",
pos="80,60!",
kind="infix",
];
R2
[
label="{ <link> link | <data> data | <mgmt> mgmt } | R2",
pos="80,42!",
kind="infix",
];
PC:mgmt1 -- R1:mgmt [kind=mgmt, color="lightgray"]
PC:mgmt2 -- R2:mgmt [kind=mgmt, color="lightgray"]
PC:data1 -- R1:data [color="black", headlabel="192.168.10.1/24", taillabel="192.168.10.11/24", fontcolor="black"]
PC:data2 -- R2:data [color="black", headlabel="192.168.20.2/24", taillabel="192.168.20.22/24", fontcolor="black"]
R1:link -- R2:link [headlabel="192.168.50.2/24", taillabel="192.168.50.1/24", labeldistance=1, fontcolor="black", color="black"]
}
test/case/ietf_routing/route_pref_255/topology.svg
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@@ -0,0 +1,81 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<!-- Title: route&#45;preference Pages: 1 -->
<svg width="500pt" height="198pt"
viewBox="0.00 0.00 499.77 198.01" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 194.01)">
<title>route&#45;preference</title>
<polygon fill="white" stroke="transparent" points="-4,4 -4,-194.01 495.77,-194.01 495.77,4 -4,4"/>
<!-- PC -->
<g id="node1" class="node">
<title>PC</title>
<polygon fill="none" stroke="black" points="0,-95.68 0,-187.68 91,-187.68 91,-95.68 0,-95.68"/>
<text text-anchor="middle" x="16.5" y="-137.98" font-family="DejaVu Sans Mono, Book" font-size="14.00">PC</text>
<polyline fill="none" stroke="black" points="33,-95.68 33,-187.68 "/>
<text text-anchor="middle" x="62" y="-172.48" font-family="DejaVu Sans Mono, Book" font-size="14.00">mgmt1</text>
<polyline fill="none" stroke="black" points="33,-164.68 91,-164.68 "/>
<text text-anchor="middle" x="62" y="-149.48" font-family="DejaVu Sans Mono, Book" font-size="14.00">data1</text>
<polyline fill="none" stroke="black" points="33,-141.68 91,-141.68 "/>
<text text-anchor="middle" x="62" y="-126.48" font-family="DejaVu Sans Mono, Book" font-size="14.00">data2</text>
<polyline fill="none" stroke="black" points="33,-118.68 91,-118.68 "/>
<text text-anchor="middle" x="62" y="-103.48" font-family="DejaVu Sans Mono, Book" font-size="14.00">mgmt2</text>
</g>
<!-- R1 -->
<g id="node2" class="node">
<title>R1</title>
<polygon fill="none" stroke="black" points="404.04,-120.51 404.04,-189.51 487.04,-189.51 487.04,-120.51 404.04,-120.51"/>
<text text-anchor="middle" x="429.04" y="-174.31" font-family="DejaVu Sans Mono, Book" font-size="14.00">mgmt</text>
<polyline fill="none" stroke="black" points="404.04,-166.51 454.04,-166.51 "/>
<text text-anchor="middle" x="429.04" y="-151.31" font-family="DejaVu Sans Mono, Book" font-size="14.00">data</text>
<polyline fill="none" stroke="black" points="404.04,-143.51 454.04,-143.51 "/>
<text text-anchor="middle" x="429.04" y="-128.31" font-family="DejaVu Sans Mono, Book" font-size="14.00">link</text>
<polyline fill="none" stroke="black" points="454.04,-120.51 454.04,-189.51 "/>
<text text-anchor="middle" x="470.54" y="-151.31" font-family="DejaVu Sans Mono, Book" font-size="14.00">R1</text>
</g>
<!-- PC&#45;&#45;R1 -->
<g id="edge1" class="edge">
<title>PC:mgmt1&#45;&#45;R1:mgmt</title>
<path fill="none" stroke="lightgray" stroke-width="2" d="M91.5,-176.68C91.5,-176.68 403.54,-178.01 403.54,-178.01"/>
</g>
<!-- PC&#45;&#45;R1 -->
<g id="edge3" class="edge">
<title>PC:data1&#45;&#45;R1:data</title>
<path fill="none" stroke="black" stroke-width="2" d="M91.5,-153.68C91.5,-153.68 403.54,-155.01 403.54,-155.01"/>
<text text-anchor="middle" x="344.54" y="-158.81" font-family="DejaVu Serif, Book" font-size="14.00">192.168.10.1/24</text>
<text text-anchor="middle" x="155" y="-157.48" font-family="DejaVu Serif, Book" font-size="14.00">192.168.10.11/24</text>
</g>
<!-- R2 -->
<g id="node3" class="node">
<title>R2</title>
<polygon fill="none" stroke="black" points="404.04,-0.5 404.04,-69.5 487.04,-69.5 487.04,-0.5 404.04,-0.5"/>
<text text-anchor="middle" x="429.04" y="-54.3" font-family="DejaVu Sans Mono, Book" font-size="14.00">link</text>
<polyline fill="none" stroke="black" points="404.04,-46.5 454.04,-46.5 "/>
<text text-anchor="middle" x="429.04" y="-31.3" font-family="DejaVu Sans Mono, Book" font-size="14.00">data</text>
<polyline fill="none" stroke="black" points="404.04,-23.5 454.04,-23.5 "/>
<text text-anchor="middle" x="429.04" y="-8.3" font-family="DejaVu Sans Mono, Book" font-size="14.00">mgmt</text>
<polyline fill="none" stroke="black" points="454.04,-0.5 454.04,-69.5 "/>
<text text-anchor="middle" x="470.54" y="-31.3" font-family="DejaVu Sans Mono, Book" font-size="14.00">R2</text>
</g>
<!-- PC&#45;&#45;R2 -->
<g id="edge2" class="edge">
<title>PC:mgmt2&#45;&#45;R2:mgmt</title>
<path fill="none" stroke="lightgray" stroke-width="2" d="M91.5,-106.68C91.5,-106.68 403.54,-12 403.54,-12"/>
</g>
<!-- PC&#45;&#45;R2 -->
<g id="edge4" class="edge">
<title>PC:data2&#45;&#45;R2:data</title>
<path fill="none" stroke="black" stroke-width="2" d="M91.5,-129.68C91.5,-129.68 403.54,-35 403.54,-35"/>
<text text-anchor="middle" x="344.54" y="-38.8" font-family="DejaVu Serif, Book" font-size="14.00">192.168.20.2/24</text>
<text text-anchor="middle" x="155" y="-133.48" font-family="DejaVu Serif, Book" font-size="14.00">192.168.20.22/24</text>
</g>
<!-- R1&#45;&#45;R2 -->
<g id="edge5" class="edge">
<title>R1:link&#45;&#45;R2:link</title>
<path fill="none" stroke="black" stroke-width="2" d="M428.54,-120.01C428.54,-120.01 428.54,-70 428.54,-70"/>
<text text-anchor="middle" x="432.77" y="-75.36" font-family="DejaVu Serif, Book" font-size="14.00">192.168.50.2/24</text>
<text text-anchor="middle" x="424.31" y="-107.25" font-family="DejaVu Serif, Book" font-size="14.00">192.168.50.1/24</text>
</g>
</g>
</svg>
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