Configuring IPv6 Mobility
Pre-requisites for IPv6 Mobility
The mobility and its related infrastructure must be configured and ready for use.
Information About IPv6 Mobility
Mobility, or roaming, is a wireless LAN client's ability to maintain its association seamlessly from one access point to another securely and with as little latency as possible. This section explains how mobility works whencontroller are included in a wireless network.
When a wireless client associates and authenticates to an access point, the access point's controller places an entry for that client in its client database. This entry includes the client's MAC and IP addresses, security context and associations, quality of service (QoS) contexts, the WLAN, and the associated access point. The controller uses this information to forward frames and manage traffic to and from the wireless client.
When the wireless client moves its association from one access point to another, the controller simply updates the client database with the newly associated access point. If necessary, new security context and associations are established as well. The process becomes more complicated, however, when a client roams from an access point joined to one controller to an access point joined to a different controller. It also varies based on whether thecontroller are operating on the same subnet.
Inter Controller Roaming
When the client associates to an access point joined to a new controller, the new controller exchanges mobility messages with the original controller, and the client database entry is moved to the new controller if sticky anchoring is disabled.
Intra Subnet Roaming with Sticky Anchoring, and Inter Subnet Roaming
Inter-subnet roaming is similar to inter-controller roaming in that the controller exchange mobility messages on the client roam. However, instead of moving the client database entry to the new controller, the original controller marks the client with an "Anchor" entry in its own client database. The database entry is copied to the new controller client database and marked with a "Foreign" entry in the new controller. The roam remains transparent to the wireless client, and the client maintains its original IP address.
In inter-subnet roaming, WLANs on both anchor and foreign controller need to have the same network access privileges and no source-based routing or source-based firewalls in place. Otherwise, the clients may have network connectivity issues after the handoff.
For more information on configuring mobility see, the Cisco 5700 Wireless LAN Controller Mobility Configuration Guide, Cisco IOS XE, Release 3.2SE.
How to Configure IPv6 Mobility
Monitoring IPv6 Mobility
This chapter displays the mobility related IPv6 configuration. To see the mobility related configurations refer to the Cisco 5700 Wireless LAN Controller Mobility Configuration Guide, Cisco IOS XE 3.2SE.
1. show ipv6 neighbors binding mac C0C1.C06B.C4E2
||Command or Action
|| show ipv6 neighbors binding mac C0C1.C06B.C4E2
Controller# show ipv6 neighbors binding mac C0C1.C06B.C4E2
Displays the IPv6 related mobility configurations.
Controller# show ipv6 neighbors binding mac C0C1.C06B.C4E2
Binding Table has 45 entries, 37 dynamic (limit 100)
Codes: L - Local, S - Static, ND - Neighbor Discovery, DH - DHCP, PKT - Other Packet, API - API created
Preflevel flags (prlvl):
0001:MAC and LLA match 0002:Orig trunk 0004:Orig access
0008:Orig trusted trunk 0010:Orig trusted access 0020:DHCP assigned
0040:Cga authenticated 0080:Cert authenticated 0100:Statically assigned
IPv6 address Link-Layer addr Interface vlan prlvl age state Time left
L FE80:20:25::16 2037.064C.BA71 Vl25 25 0100 3137mn REACHABLE
L FE80:20:24::16 2037.064C.BA41 Vl24 24 0100 3137mn REACHABLE
L FE80:20:23::16 2037.064C.BA44 Vl23 23 0100 3137mn REACHABLE
ND FE80:20:23::13 2037.0653.6BC4 Te1/0/1 23 0005 85s REACHABLE 223 s try 0
ND FE80:20:22::17 2037.064D.06F6 Te1/0/1 22 0005 3mn REACHABLE 92 s try 0
L FE80:20:22::16 2037.064C.BA76 Vl22 22 0100 3137mn REACHABLE
ND FE80:20:22::13 2037.0653.6BF6 Te1/0/1 22 0005 165s REACHABLE 136 s try 0
ND FE80:20:22::12 2037.064C.94F6 Te1/0/1 22 0005 23s REACHABLE 281 s try 0
ND FE80:20:22::2 0022.550E.8FC3 Te1/0/1 22 0005 18s REACHABLE 295 s try 0
ND FE80:20:21::17 2037.064D.06E8 Te1/0/1 21 0005 4mn REACHABLE 60 s try 0
L FE80:20:21::16 2037.064C.BA68 Vl21 21 0100 3137mn REACHABLE
ND FE80:20:21::13 2037.0653.6BE8 Te1/0/1 21 0005 57s REACHABLE 252 s try 0
ND FE80:20:21::12 2037.064C.94E8 Te1/0/1 21 0005 4s REACHABLE 297 s
ND FE80:20:21::2 0022.550E.8FC2 Te1/0/1 21 0005 2s REACHABLE 307 s try 0
ND FE80::F866:8BE0:12E4:39CF C0C1.C06B.C4E2 Ca4 21 0005 3mn REACHABLE 89 s try 0
ND FE80::6D0A:DB33:D69E:91C7 0050.B606.A6CE Te1/0/1 22 0005 135s REACHABLE 171 s try 0
ND FE80::985:8189:9937:BB05 8CA9.8295.09CC Ca0 21 0005 15s REACHABLE 287 s
ND FE80::20:24:13 2037.0653.6BC1 Te1/0/1 24 0005 155s REACHABLE 145 s try 0
L 2001:20:23::16 2037.064C.BA44 Vl23 23 0100 3137mn REACHABLE
DH 2001:20:22:0:C96C:AF29:5DDC:2689 0050.B606.A6CE Te1/0/1 22 0024 19s REACHABLE 286 s try 0(16574
DH 2001:20:22:0:A46B:90B2:F0DB:F952 0050.B606.A6CE Te1/0/1 22 0024 2339mn STALE 32401 s
DH 2001:20:22:0:7DFD:14EC:B1E4:1172 0050.B606.A6CE Te1/0/1 22 0024 2339mn STALE 24394 s
DH 2001:20:22:0:7CB3:D6DD:FD6A:50F 0050.B606.A6CE Te1/0/1 22 0024 2333mn STALE 29195 s
DH 2001:20:22:0:6D32:AF24:FDE1:2504 0050.B606.A6CE Te1/0/1 22 0024 509mn STALE 118821 s
DH 2001:20:22:0:5106:5AD:FE98:A2F0 0050.B606.A6CE Te1/0/1 22 0024 2328mn STALE 31362 s
ND 2001:20:22::201:13 0050.B606.A6CE Te1/0/1 22 0005 49s REACHABLE 264 s try 0
L 2001:20:22::16 2037.064C.BA76 Vl22 22 0100 3137mn REACHABLE
ND 2001:20:22::13 2037.0653.6BF6 Te1/0/1 22 0005 175s REACHABLE 131 s try 0
ND 2001:20:22::2 0022.550E.8FC3 Te1/0/1 22 0005 28s REACHABLE 274 s try 0
ND 2001:20:21:0:F866:8BE0:12E4:39CF C0C1.C06B.C4E2 Ca4 21 0005 4mn REACHABLE 21 s try 0
ND 2001:20:21:0:C085:9D4C:4521:B777 0021.CC73.AA17 Te1/0/1 21 0005 11s REACHABLE 290 s try 0
ND 2001:20:21:0:6233:4BFF:FE1A:744C 6033.4B1A.744C Ca4 21 0005 3mn REACHABLE 108 s try 0
ND 2001:20:21:0:447E:745D:2F48:1C68 8CA9.8295.09CC Ca0 21 0005 34s REACHABLE 276 s
ND 2001:20:21:0:3920:DDE8:B29:AD51 C0C1.C06B.C4E2 Ca4 21 0005 3mn REACHABLE 87 s try 0
ND 2001:20:21:0:1016:A333:FAD5:6E66 0021.CC73.AA17 Te1/0/1 21 0005 4mn REACHABLE 18 s try 0
ND 2001:20:21:0:C42:E317:BA9B:EB17 6033.4B1A.744C Ca4 21 0005 4mn REACHABLE 61 s try 0
ND 2001:20:21:0:985:8189:9937:BB05 8CA9.8295.09CC Ca0 21 0005 135s REACHABLE 173 s try 0
ND 2001:20:21::201:20 0021.CC73.AA17 Te1/0/1 21 0005 4mn REACHABLE 43 s try 0
ND 2001:20:21::17 2037.064D.06E8 Te1/0/1 21 0005 4mn REACHABLE 50 s try 0
L 2001:20:21::16 2037.064C.BA68 Vl21 21 0100 3137mn REACHABLE
ND 2001:20:21::13 2037.0653.6BE8 Te1/0/1 21 0005 67s REACHABLE 237 s try 0
ND 2001:20:21::12 2037.064C.94E8 Te1/0/1 21 0005 5mn REACHABLE 512 ms try 0
ND 2001:20:21::2 0022.550E.8FC2 Te1/0/1 21 0005 12s REACHABLE 294 s try 0
|IPv6 command reference
||IPv6 Command Reference (Cisco WLC 5700 Series)
|| Mobility Configuration Guide, Cisco IOS XE Release 3SE (Cisco WLC 5700 Series)
|All supported MIBs for this release.
To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:
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Feature Information for IPv6 Mobility
This table lists the features in this module and provides links to specific configuration information:
IPv6 Mobility Functionality
Cisco IOS XE 3.2SE
This feature was introduced.