134 lines
4 KiB
Python
134 lines
4 KiB
Python
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#!/usr/bin/env python
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# SPDX-License-Identifier: ISC
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#
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# Part of NetDEF Topology Tests
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#
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# Copyright (c) 2017 by
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# Network Device Education Foundation, Inc. ("NetDEF")
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#
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r"""
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customize.py: Simple FRR MPLS L3VPN test topology
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+----+----+
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| ce1 |
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| 99.0.0.1| CE Router
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+----+----+
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192.168.1. | .2 ce1-eth0
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| .1 r1-eth4
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+---------+
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| r1 |
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| 1.1.1.1 | PE Router
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+----+----+
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| .1 r1-eth0
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~~~~~~~~~~~~~
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~~ sw0 ~~
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~~ 10.0.1.0/24 ~~
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~~~~~~~~~~~~~
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|10.0.1.0/24
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| .2 r2-eth0
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+----+----+
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| r2 |
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| 2.2.2.2 | P router
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+--+---+--+
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r2-eth2 .2 | | .2 r2-eth1
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______/ \______
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/ \
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~~~~~~~~~~~~~ ~~~~~~~~~~~~~
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~~ sw2 ~~ ~~ sw1 ~~
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~~ 10.0.3.0/24 ~~ ~~ 10.0.2.0/24 ~~
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~~~~~~~~~~~~~ ~~~~~~~~~~~~~
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| / |
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\ _________/ |
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\ / \
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r3-eth1 .3 | | .3 r3-eth0 | .4 r4-eth0
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+----+--+---+ +----+----+
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| r3 | | r4 |
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| 3.3.3.3 | | 4.4.4.4 | PE Routers
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+-----------+ +---------+
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192.168.1. | .1 192.168.1. | .1 rX-eth4
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| .2 | .2 ceX-eth0
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+-----+-----+ +----+-----+
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| ce2 | | ce3 |
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| 99.0.0.2 | | 99.0.0.3 | CE Routers
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+-----+-----+ +----+-----+
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"""
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import os
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# pylint: disable=C0413
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# Import topogen and topotest helpers
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from lib.topogen import get_topogen
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from lib.topolog import logger
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from lib.ltemplate import ltemplateRtrCmd
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# Required to instantiate the topology builder class.
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CWD = os.path.dirname(os.path.realpath(__file__))
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# test name based on directory
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TEST = os.path.basename(CWD)
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def build_topo(tgen):
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"Build function"
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# This function only purpose is to define allocation and relationship
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# between routers, switches and hosts.
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#
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# Create P/PE routers
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tgen.add_router("r1")
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# check for mpls
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if tgen.hasmpls != True:
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logger.info("MPLS not available, tests will be skipped")
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return
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for routern in range(2, 5):
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tgen.add_router("r{}".format(routern))
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# Create CE routers
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for routern in range(1, 4):
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tgen.add_router("ce{}".format(routern))
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# CE/PE links
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tgen.add_link(tgen.gears["ce1"], tgen.gears["r1"], "ce1-eth0", "r1-eth4")
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tgen.add_link(tgen.gears["ce2"], tgen.gears["r3"], "ce2-eth0", "r3-eth4")
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tgen.add_link(tgen.gears["ce3"], tgen.gears["r4"], "ce3-eth0", "r4-eth4")
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# Create a switch with just one router connected to it to simulate a
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# empty network.
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switch = {}
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switch[0] = tgen.add_switch("sw0")
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switch[0].add_link(tgen.gears["r1"], nodeif="r1-eth0")
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switch[0].add_link(tgen.gears["r2"], nodeif="r2-eth0")
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switch[1] = tgen.add_switch("sw1")
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switch[1].add_link(tgen.gears["r2"], nodeif="r2-eth1")
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switch[1].add_link(tgen.gears["r3"], nodeif="r3-eth0")
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switch[1].add_link(tgen.gears["r4"], nodeif="r4-eth0")
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switch[1] = tgen.add_switch("sw2")
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switch[1].add_link(tgen.gears["r2"], nodeif="r2-eth2")
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switch[1].add_link(tgen.gears["r3"], nodeif="r3-eth1")
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def ltemplatePreRouterStartHook():
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cc = ltemplateRtrCmd()
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tgen = get_topogen()
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logger.info("pre router-start hook")
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# check for mpls
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if tgen.hasmpls != True:
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logger.info("MPLS not available, skipping setup")
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return False
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logger.info("setup mpls input")
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return True
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def ltemplatePostRouterStartHook():
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logger.info("post router-start hook")
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return True
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