Cisco IOS XR Session Border Controller Configuration Guide Release 3.6
IPv6 Support on the DBE
Download this chapter
IPv6 Support on the DBEIPv6 Support on the DBE
Download the complete book
Book-level PDF: Cisco IOS XR Session Border Controller Configuration GuideIOS XR Software Release 3.6Book-level PDF: Cisco IOS XR Session Border Controller Configuration GuideIOS XR Software Release 3.6 (PDF - 12 MB)
 Feedback

Table Of Contents

IPv6 Support on the DBE

Contents

Restrictions for IPv6 Support on the DBE

Information About DBE IPv6 Support

Configuring IPv6 Media Addresses

Displaying IPv6 Media Addresses: Examples

Additional References

Related Documents

Standards

MIBs

Technical Assistance


IPv6 Support on the DBE

The data border element (DBE) now supports internet protocol version 6 (IPv6), the designated successor to IPv4 for general use on the Internet. IPv6 significantly increases the number of addresses available for networked devices compared to IPv4, and enables each mobile electronic device to have its own address.

Feature History for DBE IPv6 Support

Release
Modification

Release 3.5.0

This command was first introduced on the Cisco CRS-1.

Release 3.6.0

No modification.


Contents

This module contains the following sections:

•Restrictions for IPv6 Support on the DBE

•Information About DBE IPv6 Support

•Configuring IPv6 Media Addresses

•Additional References

Restrictions for IPv6 Support on the DBE

•No support for IPv4 pinhole and IPv6 pinhole within the same context.

•In the carrier routing system, only the twice-NAPT feature is supported.

•No support for IPv6 signaling addresses for communicating with the system border element (SBE). Communication with the controlling SBE is conducted over IPv4 only.

•SBE does not support IPv6 whether in a distributed or unified architecture. Therefore, a third-party SBE is needed to control a standalone DBE.

•No support for global unicast IPv6 addresses.

•No support for IPv6 addresses that do not use the default zone.

•No support for using the IPv6 Flow Label to classify packets. Instead, it continues to use the transport protocol type (UDP or TCP), and local and remote ports, as was the case with IPv4. The Flow Label is always set to 0 on outgoing packets.

•No support for address forwarding between IPv4 and IPv6 endpoints. For example, DBE treats 6-4 addresses (addresses prefixed with 2002::/16) as ordinary global unicast native IPv6 addresses.

•No support for ISATAP link-local addresses.

Information About DBE IPv6 Support

The DBE supports the following:

•IPv6 pinholes through the DBE both for media endpoints and signaling pinholes after the support for signaling pinholes has been added.

•Forwarding media from one IPv6 endpoint to another IPv6 endpoint.

•Configuration of IPv6 media addresses and media address pools.

•Simultaneously supports IPv4 and IPv6 endpoints. However the DBE does not support interworking between IPv4 and IPv6 endpoints. IPv4 endpoints may only forward media to other IPv4 endpoints. Similarly, IPv6 endpoints may only forward media to other IPv6 endpoints.

•The existing CLI show commands display IP addresses as IPv6 addresses where appropriate.

Configuring IPv6 Media Addresses

Existing commands for configuring media addresses and media address pools for IPv4 are now updated to allow configuration of IPv6 addresses.

For restrictions to configuration of IPv6 addresses, see "Restrictions for IPv6 Support on the DBE" section.

Updated commands include the following: 

show services sbc service-name dbe addresses

show services sbc service-name dbe media-flow-stats

show services sbc service-name dbe signaling-flow-stats

IPv6 addresses appear as eight sets of four hexadecimal characters regardless of the form in which they were originally configured, for example:

xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx

A media address can be configured as 2000::0001, but it appears after a displayed by show services sbc dbe addresses command as follows: 

2000:0000:0000:0000:0000:0000:0000:0001

SUMMARY STEPS

1. configure

2. sbc service-name

3. dbe

4. media-address ipv6 ipv6 media address [vrf vrf-name] pool ipv6 starting IPv6 address ending IPv6 address

5. port-range min-port max-port [class-of-service]

6. commit

7. end

8. show services sbc service-name dbe addresses

9. show services sbc service-name dbe media-flow-stats [vrf vrf-name [ipv4 ipv4 media address | ipv6 ipv6 media address [port port number]]]

10. show services sbc service-name dbe signaling-flow-stats [vrf vrf-name [ipv4 ipv4 media address [port port number]]]

DETAILED STEPS

 
Command or Action
Purpose

Step 1 

configure

Example:

RP/0/0/CPU0:router# configure

Enables the global configuration mode.

Step 2 

sbc service-name

Example:

RP/0/0/CPU0:router(config)# sbc mysbc

Enters the mode of an SBC service.

Use the service-name argument to define the name of the SBC.

Step 3 

dbe

Example:

RP/0/0/CPU0:router(config-sbc)# dbe

Enters the mode of the data border element (DBE) function of the SBC.

Step 4 

media-address ipv6 IPv6 media address [vrf vrf-name]pool ipv6 starting IPv6 address ending IPv6 address

Example:

RP/0/RP0/CPU0:SBC-CRS-16(config-sbc-dbe)# media-address pool ipv6 2001::1 2001:5

Creates an IPv6 address range within a DBE media address pool.

The no version of this command deletes an IPv6 address range.

•ipv6 media-address —Appears as 8 sets of 4 hexadecimal characters.

•(Optional) vrf-name parameter—Configures a media address pool through a virtual router.

•starting IPv6 address—starting IPv6 media address displayed in the form of eight sets of four hexadecimal characters. Any valid IPv6 global unicast address.

•ending IPv6 address—ending IPv6 media address.

Note The ending address must be numerically higher than the starting address.

Step 5 

port-range min-port max-port [class-of-service]

Example:

RP/0/0/CPU0:router(config-sbc-dbe-media-address-pool-ip v6)# port range 10000 20000 voice

Creates a port range associated with the media address or range of addresses. Default range is 16384-32767. The port-range command now includes the signaling service class.

•min-port—Starting port number of the range. Minimum value = 10000 and must always be less than the port value.

•max-port—Ending port number of the range must be greater than the min-port number. Maximum value = 65535.

•(Optional) class-of-service—Class of service affinity for the port range. Options are any, voice, video, signaling. Default is any.

Note If the MGC does not specify that a local address or port is for a signaling pinhole, the DBE selects one from a port range that it identifies by the signaling class of service. If the MGC provides an address or port, it must fall within a port range identified by the signaling class of service.

Step 6 

commit

Example:

RP/0/0/CPU0:router(config-sbc-db-media-address-pool-
ipv6)# commit

The commit command saves the configuration changes to the running configuration file while remaining within the configuration session.

Step 7 

end

Example:

RP/0/0/CPU0:router(config-sbc-dbe-media-address-pool-ip 6)# end

Exits the current configuration mode.

Step 8 

show services sbc service-name dbe addresses vrf vrf-name

Example:

RP/0/0/CPU0:router# show services sbc service-name dbe addresses vrf vrf-name


SBC Service mySbc

H.248 control address:10.0.0.1

Media Address VRF

2000:0000:1000:1000:2000:2000:3000:0000 Global

2000:0000:3333:4444:5555:6666:7777:8888 vpn3

Lists the addresses configured on the DBE.

•vrf-name—(Optional) Only displays media flows to or from this VPN.

Step 9 

show services sbc service-name dbe media-flow-stats [vrf vrf-name [ipv4 ipv4 media address | ipv6 ipv6 media address [port port number]]]

Example:

RP/0/0/CPU0:router# show services sbc mysbc dbe media-flow-stats vrf vpn3 ipv4 10.1.1.1 port 24000

Displays the statistics about one or more media flows collected on the DBE.

•service-name— SBC service name.

•vrf-name—(Optional) Only displays media flows to/from this VPN.

•(Optional) ipv4 media address | ipv6 media address—Only displays media flows to/from this IPv4|IPv6 media address.

•(Optional) port-number—Only displays media flows to/from this port.

Step 10 

show services sbc service-name dbe signaling-flow-stats [vrf vrf-name [ipv4 ipv4 media address | ipv6 ipv6 media address [port port number]]]

Example: 
RP/0/RP0/CPU0:router# show services sbc mysbc dbe 
signaling-flow-stats vrf media-address ipv6 2001::3000

Lists the statistics about one or more signaling flows collected on the DBE. The example below shows the reported fields.

•service-name—The SBC service name

•(Optional) vrf-name—Only display media flows to/from this VPN

•(Optional) ipv4 media address | ipv6 media address—Only displays media flows to/from this IPv4|IPv6 media address

•(Optional) port-number—Only display media flows to/from this port

Displaying IPv6 Media Addresses: Examples

Example 1

The following example shows the reported fields of the new show command for media-flow-stats: 

# show services sbc service-name dbe media-flow-stats vrf vpn3 ipv4 10.1.1.1 port 24000


SBC Service service-name

  mediaFlow 1

      FlowPairState Open

      GateAge  15340 ms

      CallPriority Normal

      FlowPairBandwidth 1500

      DtmfPacketsQueued  0

      Side A

        VpnId vpn3

        LocalAddress 10.1.1.1

        LocalPort 24000

        RemoteAddress 192.168.1.1

        RemotePort 32420

        RtpPacketsRcvd 300

        RtpOctetsRcvd 6000

        RtpPacketsSent 100

        RtpOctetsSent 2000

        RtpPacketsDiscarded 0

        RtpOctetsDiscarded 0

        EndPointPacketsSent 300

        EndPointPacketsRcvd 97

        EndPointPacketsLost 1

        DtmfInterworking No

        MediaFlowing Yes

        RouteError No

        BillingId 12AB3C4D567124C7124C12DE

      Side B

        VpnId <none>

        LocalAddress 10.1.1.2

        LocalPort 24002

        RemoteAddress 172.192.2.3

        RemotePort 24002

        RtpPacketsRcvd 100

        RtpOctetsRcvd 2000

        RtpPacketsSent 300

        RtpOctetsSent 6000

        RtpPacketsDiscarded 0

        RtpOctetsDiscarded 0

        EndPointPacketsSent 100

        EndPointPacketsRcvd 300

        EndPointPacketsLost 0

        DtmfInterworking No

        MediaFlowing Yes

        RouteError No

        BillingId 5DAB3C4D153624C7124E1234

If the parameter Media flowing equals Yes (see the boldfaced type in the example), either media has been observed flowing on the call during the media-timeout period, or the call has failed over within the last media-timeout period, and the SBC has not yet observed whether or not media is flowing.

The statistics beginning with Rtp are maintained and collected in real time when the command is issued.

Endpoint statistics (beginning with EndPoint) is collected from the RTCP packets transmitted by endpoints, and the statistics are updated when these packets are received.

Not all endpoints report RTCP endpoint statistics. The example does not display all endpoints that report RTCP statistics.

Example 2

The following example shows the reported fields of the new show command for signaling-flow-stats: 

# show services sbc my sbc dbe signaling-flow-stats vrf vpn3 ipv4 10.1.1.1 port 24000


SBC Service "mySbc"

  signalingFlow 1

      FlowPairState Open

      PinholeAge  15340 ms

      PinholeBandwidth 1500

      Side A

        VpnId vpn3

        LocalAddress 10.1.1.1

        LocalPort 24000

        RemoteAddress 192.168.1.1

        RemotePort 32420

        PacketsRcvd 300

        OctetsRcvd 6000

        PacketsSent 100

        OctetsSent 2000

        PacketsDiscarded 0

        OctetsDiscarded 0

      Side B

        VpnId <none>

        LocalAddress 10.1.1.2

        LocalPort 24002

Endpoint statistics (beginning with EndPoint) is collected from the RTCP packets transmitted by endpoints, and the statistics is updated when these packets are received.

Not all endpoints report RTCP endpoint statistics. The example does not display all endpoints that report RTCP statistics.

Additional References

The following sections provide references related to DBE IPv6 support.

Related Documents

Related Topic
Document Title

Cisco IOS XR master command reference

Cisco IOS XR Master Commands List

Cisco IOS XR SBC interface configuration commands

Cisco IOS XR Session Border Controller Command Reference

Initial system bootup and configuration information for a router using the Cisco IOS XR Software

Cisco IOS XR Getting Started Guide

Cisco IOS XR command modes

Cisco IOS XR Command Mode Reference


Standards

Standards
Title

No new or modified standards are supported by this feature, and support from existing standards has not been modified by this feature.

—


MIBs

MIBs
MIBs Link

—

To locate and download MIBs using Cisco IOS XR software, use the Cisco MIB Locator found at the following URL and choose a platform under the Cisco Access Products menu:

http://cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml


Technical Assistance

Description
Link

The Cisco Technical Support website contains thousands of pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools. Registered Cisco.com users can log in from this page to access even more content.

http://www.cisco.com/techsupport