slides - Terena

Ethernet over MPLS tests
Marcin Garstka, Poznań Supercomputing and Networking
Centre
Copenhagen, 20 November 2012
The research leading to these results has received funding from the European Community’s
Seventh Framework Programme (FP7/2007-2013) under grant agreement no 238875 (GÉANT)
connect • communicate • collaborate
Agenda
Summary of the technology
Technology testing:
OAM
Protection and Restoration
Multidomain
Multicast
EoMPLS services over MPLS-TP
connect • communicate • collaborate
2
Ethernet over MPLS
Layer 2 transport over an IP/MPLS network
Multiple Layer 2 technologies, Ethernet dominating nowedays
Point-2-Point (VPWS, Layer 2 VPN) and Multipoint-2-Multipoint (VPLS)
services
Layer 2 multicast using point-to-multipoint LSPs as an emerging
service
connect • communicate • collaborate
3
Data Plane
IP/MPLS network
Pseudowire transport
RSVP or LDP to establish Label Switched Paths
RSVP has traffic engineering functions and Fast Reroute
Layer 2 functions (e.g. MAC learning) for VPLS only on edge routers
Backbone routers not aware of the services
connect • communicate • collaborate
4
Control Plane
2 protocols:
BGP (with neighbour autodiscovery)
LDP (simpler but without autodiscovery)
connect • communicate • collaborate
5
Tests on Juniper routers
The purpose of the tests was to assess the status of implementation of
selected VPWS and VPLS features on commercially available routers.
The selected features are either new or interesting for research and
education networks.
The ultimate goal of the tests was to verify if the Ethernet over MPLS
technology fulfills selected requirements for Carrier Class Transport
Network Technologies identified in [GN3-09-224_DJ1.1.1].
Tests executed on Juniper Networks routers.
Juniper MX-series routers (MX-240, MX-480 and MX-960), software
11.1R2.3.
connect • communicate • collaborate
6
Ethernet OAM tests
connect • communicate • collaborate
7
802.1ag Connectivity Fault
Management and MPLS trace test
Continuity Check
Protocol
Linktrace Protocol
MPLS Trace
No MIPs or MEPs possible on transit routers
Continuity Check Protocol was able to indicate loss and restoration
of connectivity
Linktrace was able to trace the connection but not able to locate the
outage
MPLS Trace was able to trace the path but not able to locate the
outage
connect • communicate • collaborate
MAC Ping also tested with positive results
8
Y.1731 Ethernet frame delay
measurement test
One-way and Twoway frame delay and
frame delay variation
measured in the
Customer Domain
Not supported in the
Provider Domain on
the routers used for
tests
connect • communicate • collaborate
9
Y.1731 ETH-AIS test
Not supported by Juniper
connect • communicate • collaborate
10
Protection and Restoration tests
connect • communicate • collaborate
11
MPLS Fast Reroute in VPWS and
VPLS test
RSVP with Fast Reroute (Link
Protection)
BGP-signaled VPWS
LDP-signaled VPWS
BGP-signaled VPLS
LDP-signaled VPLS
Without Fast
Reroute
Recovery time
[ms]
190
187
334
346
With Fast
Reroute
Recovery time
[ms]
21
22
25
22
connect • communicate • collaborate
12
BFD and MPLS Fast Reroute test
BFD for ISIS (minimum interval
10, multiplier 2)
RSVP with Fast Reroute (Link
Protection)
BGP-signaled VPWS
LDP-signaled VPWS
BGP-signaled VPLS
LDP-signaled VPLS
Without BFD
Recovery time
21 seconds
26 seconds
20 seconds
25 seconds
With BFD
Recovery time
72 ms
72 ms
76 ms
70 ms
In bigger networks such short times will not be possible.
connect • communicate • collaborate
13
Multi-domain tests
connect • communicate • collaborate
14
Multi-domain 802.1ag and MPLS Trace
test
Labelled unicast
Inter-AS option C – eBGP
between Route Reflectors (not
ASBRs) for VPN routes
redistribution
Cointinuity Check Protocol and
Linktrace protocol properly
indicated loss of connectivity in
the Provider Domain
The protocols cannot be used in
the Operator Domain (single AS)
MPLS trace not supported for
inter-AS option C
connect • communicate • collaborate
15
Multi-domain restoration test
The LSP was successfully
rerouted to link P2-P3 when link
P1-PE2 was disconnected.
The time needed for service
restoration was 31 ms.
connect • communicate • collaborate
16
Multicast in VPLS tests
connect • communicate • collaborate
17
Multicast in VPLS tests
Efficient multicast replication with
P-to-MP LSPs
The same router can serve as
transit and access
Service restoration tested when
one of the links was disconnected
connect • communicate • collaborate
18
VPWS and VPLS over MPLS/TP
tests
connect • communicate • collaborate
19
Multicast in VPLS tests
EoMPLS services demonstrated
over LSPs provisioned by ASPEN
Network Manager
connect • communicate • collaborate
20
Summary
Ethernet over MPLS proved to be a technology carriers and NRENs should
consider for their networks
OAM
Fast recovery
Multidomain operations
L2 multicast
connect • communicate • collaborate
21
Thank you very much
Questions ?
connect • communicate • collaborate
22