Bei der Adressarchitektur von IPv4 beinhaltet eine IP-Adresse zwei Informationen über einen Knoten (genaugenommen ein Interface): erstens die Adresse des Interfaces (Host-ID) und zweitens die Information, wie das Interface mit dem Netzwerk verbunden ist (Subnetz). Dies ändert sich mit IPv6 nicht, ausser dass der Adressraum viel grösser ist. Dies führt zu grösseren Herausforderungen in komplexen Netzwerken, insbesondere wenn Anforderungen an Multi-Homing oder Mobilität vorliegen. LISP (Locator/ID Separation Protocol) ist eine neue Routingarchitektur mit einer neuen Adressierungsstruktur. Dabei wird die Identität eines Gerätes, auch Endpoint Identifier genannt (EID), von seiner Position im Netzwerk, auch Routing Locator (RLOC) genannt, in zwei separate Adressräume unterteilt. Die Präsentation geht auf verschiedene Use Cases, insbesondere die Migration von IPv4 auf IPv6 mit LISP ein.

1. Version 0.7
24 Feb. 2013
LISP Migration zu IPv6 mit LISP
Gerd Pflueger – gerd@cisco.com
© 2013 Cisco and/or its affiliates. All rights reserved. Cisco Public 1

2. © 2011 Cisco and/or its affiliates. All rights reserved. Cisco Public 2

3. © 2011 Cisco and/or its affiliates. All rights reserved. Cisco Public 3

4. Gerd at the very present time
© 2011 Cisco and/or its affiliates. All rights reserved. Cisco Public 4

5. Version 0.7
24 Feb. 2013
LISP Migration zu IPv6 mit LISP
Lukas Krattiger – lukk@cisco.com
© 2013 Cisco and/or its affiliates. All rights reserved. Cisco Public 5

6. LISP
–
A
Solu2on
to
Real
World
Problems
§ LISP
originally
conceived
to
address
Internet
Scaling
Many
customers
have
been
reques2ng
Cisco
to
look
into
this
issue
“….
rou'ng
scalability
is
the
most
important
problem
facing
the
Internet
today
and
must
be
solved….”
A;endees
of
IAB
workshop
in
October
2006
(wri;en
in
RFC4984)
Without
LISP
© 2012 Cisco and/or its affiliates. All rights reserved. Cisco Public 6

7. Locator/ID split enables other (more important) benefits…
§ Today’s Internet Behavior
Internet
x.y.z.1
Device IPv4 or IPv6 address When the device moves, it gets a new
represents identity and IPv4 or IPv6 address for its new identity
location w.z.y.9 and location
§ LISP Behavior
Internet
x.y.z.1
Device IPv4 or IPv6 a.b.c.1 When the device moves, keeps its IPv4
address represents e.f.g.7 or IPv6 address.
x.y.z.1
identity only It has the same identity
Only the location changes
© 2012 Cisco and/or its affiliates. All rights reserved. Cisco Public 7

8. LISP – A Level of Indirection for IP Addressing
§ Creates a “Level of indirection” by using two namespaces – EID and RLOC
§ EID (Endpoint Identifier) is the host IP address
EID RLOC
a.a.a.0/24 w.x.y.1
b.b.b.0/24 x.y.w.2
MS c.c.c.0/24
d.d.0.0/16
z.q.r.5
z.q.r.5
EID Space EID
a.a.a.0/24
b.b.b.0/24
c.c.c.0/24
RLOC
w.x.y.1
x.y.w.2
z.q.r.5
d.d.0.0/16 z.q.r.5
§ RLOC (Routing Locator) is the EID
a.a.a.0/24
b.b.b.0/24
c.c.c.0/24
RLOC
w.x.y.1
x.y.w.2
z.q.r.5
infrastructure IP address of the LISP ITR
d.d.0.0/16 z.q.r.5
Non-LISP
router Prefix Next-hop
w.x.y.1
x.y.w.2
z.q.r.5
e.f.g.h
e.f.g.h
e.f.g.h
Map DB
§ Mapping Database (M-DB) is
z.q.r.5 e.f.g.h
the distributed database and policy RLOC Space
PTR
repository ETR
ETR
§ Network-­‐based
solu<on
§ Address
Family
agnos<c
EID Space
§ No
host
changes
§ Incrementally
deployable
§ Minimal
configura<on
(support
LISP
and
non-­‐LISP)
§ No
DNS
changes
§ Support
for
mobility
© 2012 Cisco and/or its affiliates. All rights reserved. Cisco Public 8

9. LISP IPv4 EID/IPv4 RLOC Header Example
IPv4 Outer Header: Router
supplies RLOCs
UDP
LISP
header
IPv4 Inner Header:
Host supplies EIDs
© 2012 Cisco and/or its affiliates. All rights reserved. Cisco Public 9

10. LISP Encapsulation Combinations – IPv4 and IPv6 Supported
IPv4 IPv4
Outer Outer
Header Header
UDP UDP
LISP LISP
IPv4
Inner
Header IPv6
IPv4/IPv4 Inner
Header
IPv4/IPv6
IPv6
Outer
Header
IPv6
Outer
UDP Header
LISP
UDP
LISP
IPv6
Inner IPv4
Header Inner
Header
IPv6/IPv6 IPv6/IPv4
© 2012 Cisco and/or its affiliates. All rights reserved. Cisco Public 10

11. LISP Efficient Multihoming
• Part of the LISP Solution Space…
1. Multihoming
2. IPv6 Transition
3. Virtualization/VPN
IPv4
Core
4. Mobility
xTR
IPv4
Network
xTR
IPv4
Core
v4
LISP
is
an
Architecture…
BRKRST-3045 © 2012 Cisco and/or its affiliates. All rights reserved. Cisco Public

12. LISP IPv6 Transition Support
• Part of the LISP Solution Space…
1. Multihoming
2. IPv6 Transition
3. Virtualization/VPN
IPv6
Network
IPv6
Core
4. Mobility
xTR
IPv4
Network
v6
xTR
IPv4
Core
v4
LISP
is
an
Architecture…
BRKRST-3045 © 2012 Cisco and/or its affiliates. All rights reserved. Cisco Public

13. LISP Virtualization/VPN Support
• Part of the LISP Solution Space…
1. Multihoming
2. IPv6 Transition
3. Virtualization/VPN
IPv6
Network
IPv6
Core
4. Mobility
xTR
IPv4
Network
v6
xTR
IPv4
Core
v4
LISP
is
an
Architecture…
BRKRST-3045 © 2012 Cisco and/or its affiliates. All rights reserved. Cisco Public

14. LISP Host Mobility Support
• Part of the LISP Solution Space…
1. Multihoming
2. IPv6 Transition
3. Virtualization/VPN
IPv6
Network
IPv6
Core
4. Mobility
xTR
IPv4
Network
v6
xTR
IPv4
Core
v4
LISP
is
an
Architecture…
BRKRST-3045 © 2012 Cisco and/or its affiliates. All rights reserved. Cisco Public

15. Needs:
Connecting IPv6 Islands
− Rapid IPv6 Deployment v6
v6
IPv4 Enterprise Core IPv4 Enterprise
− Minimal Infrastructure disruption v6
IPv4 Internet
xTR
island
Core
LISP Solution:
v6 xTR
island v4 v6
− LISP encapsulation is Address Family agnostic
IPv6 interconnected over IPv4 core IPv6 Service Support
v6
PxTR
IPv4 interconnected over IPv6 core
v4 v6
IPv4 Core IPv6 Internet
Benefits: v6 service
xTR
IPv4 Internet
− Accelerated IPv6 adoption v6
− Minimal added configurations IPv6 Access Support v6 home
xTR Network
− No core network changes v6
PxTR
v4 v6
v6 home v6
− Can be used as a transitional or permanent solution v6 site
PxTR IPv4
access & Internet
xTR Network
.
.
PxTR
IPv6 Internet v6 home
xTR Network
© 2012 Cisco and/or its affiliates. All rights reserved. Cisco Public 15

16. gerd.pflueger@cisco.com
193.159.224.1/24
Lo0
2010::/48
EID RI-MS/MR
EID
2010::3 .1 2020::2
2020::/48
RA3 .1 10.0.0.0/30 RB3
LISP A 2010::1 RA1-xTR 10.1.1.0/30 LISP B
RLOC .2 10.2.1.0/30
.2 .2 .1
RC RB1-xTR 2020::1
.2 .1
2010::2 10.1.2.0/30 10.2.2.0/30
RA2-xTR .1
RLOC RLOC
RA2# sh run ipv6
ipv6 route 0::/0 Null0
interface Ethernet2/2
ipv6 address 2010::0002/48
RA2# sh run lisp
ip lisp itr-etr
ipv6 lisp itr-etr
ipv6 lisp map-cache 2020::0002/128 10.2.1.1 priority 1 weight 100
© 2012 Cisco and/or its affiliates. All rights reserved. Cisco Public 16
16

17. • With real implementation experience!
• With real deployment experience!
• With real customer engagement!
• http://www.lisp4.net & http://www.lisp6.net
• http://lisp.cisco.com
• lisp-support@cisco.com
© 2012 Cisco and/or its affiliates. All rights reserved. Cisco Public 17

18. LISP Status
• LISP Deployments - International LISP Beta Network…
§ LISP Community Operated:
‒ More than 5 Years operational…
‒ More than ~300 Sites, 33 countries…
§ Interoperable LISP implementations:
‒ Cisco
IOS (ISR, ISRG2, 7200) and IOS-XE (ASR1K)
Cisco IOS-XR (CRS3, ASR9K (beta))
Cisco NX-OS (N7K, C200)
‒ Open Source http://lisp.cisco.com http://www.lisp.intouch.eu/
FreeBSD: OpenLISP
Plus
a
few
others…
;-­‐)
http://vinciconsulting.com/vxnet
http:/lisp.isarnet.net/
Linux: Aless, LISPmob, OpenWrt
Linux: LISPmob
Android (Gingerbread) and
more…
‒ Furukawa Network Solution Corporation FITELnet-G21
BRKRST-3045 © 2012 Cisco and/or its affiliates. All rights reserved. Cisco Public

19. LISP Status
• LISP Software – Available Releases…
§ Cisco Releases Cisco LISP Releases: http://lisp.cisco.com
‒ NX-OS since December 2009… Nexus 7000, UCS C200
‒ IOS since December 2009… ISR, ISRG2, 7200
‒ IOS-XE since March 2010… ASR1K
‒ IOS-XR since March 2012… CRS3
‒ Coming soon… ASR9K (4/2013), Catalyst 6500 (5/2013), and others
§ Other Releases
Other LISP Releases: http://www.lisp4.net
‒ Furukawa Network Solutions Corp
‒ FreeBSD :: Open LISP
‒ Linux :: Aless, LISPmob, OpenWrt (coming soon…)
‒ Android :: Gingerbread (coming soon…)
‒ Other vendors… Check the site!
BRKRST-3045 © 2012 Cisco and/or its affiliates. All rights reserved. Cisco Public

20. • RFC 6830 - The Locator/ID Separation Protocol (LISP)
• RFC 6831 - The Locator/ID Separation Protocol (LISP) for Multicast Environments
• RFC 6832 - Interworking between Locator/ID Separation Protocol (LISP) and Non-LISP Sites
• RFC 6833 - Locator/ID Separation Protocol (LISP) Map-Server Interface
• RFC 6834 - Locator/ID Separation Protocol (LISP) Map-Versioning
• RFC 6835 - The Locator/ID Separation Protocol Internet Groper (LIG)
• RFC 6836 - Locator/ID Separation Protocol Alternative Logical Topology (LISP+ALT)
© 2012 Cisco and/or its affiliates. All rights reserved. Cisco Public 20

21. Thank you.