Harald Welte has submitted this change and it was merged.
Change subject: document the purpose of IP addresses used by GGSN tests
......................................................................
document the purpose of IP addresses used by GGSN tests
The purpose of the various IP addresses used by our GGSN tests is not
immediately clear. Add documentation based on the current status quo.
Change-Id: I079efcff3dab09d71330625f5b661cd81e42bf38
---
M ggsn_tests/GGSN_Tests.ttcn
1 file changed, 19 insertions(+), 0 deletions(-)
Approvals:
Pau Espin Pedrol: Looks good to me, but someone else must approve
Harald Welte: Looks good to me, approved
Jenkins Builder: Verified
diff --git a/ggsn_tests/GGSN_Tests.ttcn b/ggsn_tests/GGSN_Tests.ttcn
index 2b7de96..1469062 100644
--- a/ggsn_tests/GGSN_Tests.ttcn
+++ b/ggsn_tests/GGSN_Tests.ttcn
@@ -20,16 +20,35 @@
const integer GTP1U_PORT := 2152;
modulepar {
+ /* Default IP addresses. May be overridden by GGSN_Tests
configuration files. */
+
+ /* The SGSN simulated by TTCN3 will bind to these addresses for
GTP control and GTP user planes. */
charstring m_bind_ip_gtpc := "127.23.42.1";
charstring m_bind_ip_gtpu := "127.23.42.1";
+ /* Addresses the GGSN which is being tested is listening on for
SGSN connections. */
charstring m_ggsn_ip_gtpc := "127.0.0.6";
charstring m_ggsn_ip_gtpu := "127.0.0.6";
+ /*
+ * Our tests expect to see these DNS servers in 'Create PDP
context responses' sent by the GGSN.
+ * These addresses must therefore match 'ip[v6] dns' options
configured in osmo-ggsn.conf.
+ *
+ * These addresses are not expected to serve actual DNS
requests. However, tests may expect to be
+ * able to ping these addresses (currently, IPv4 addresses must
respond with an ICMP 'echo reply',
+ * and IPv6 addresses may respond with either ICMPv6 'echo
reply' or 'destination unreachable').
+ */
charstring m_ggsn_ip4_dns1 := "192.168.100.1"
charstring m_ggsn_ip4_dns2 := "8.8.8.8"
charstring m_ggsn_ip6_dns1 := "2001:4860:4860::8888"
charstring m_ggsn_ip6_dns2 := "2001:4860:4860::8844"
+
+ /*
+ * Additional address ranges are defined in osmo-ggsn.conf from
which addresses are assigned
+ * to MS "behind" the simulated SGSN. These addresses appear on
tun devices used by osmo-ggsn.
+ * The tests expect to be able to send ping packets between any
two simulated MS within the same
+ * address range. This requires IP forwarding to be enabled on
the corresponding tun interfaces.
+ */
}
type set PdpContext {
--
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Gerrit-MessageType: merged
Gerrit-Change-Id: I079efcff3dab09d71330625f5b661cd81e42bf38
Gerrit-PatchSet: 3
Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-Owner: Stefan Sperling <ssperl...@sysmocom.de>
Gerrit-Reviewer: Harald Welte <lafo...@gnumonks.org>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: Pau Espin Pedrol <pes...@sysmocom.de>
