Cvoice 6.0 S05 L02

Configuring Basic Gatekeeper Functionality

Implementing H.323 Gatekeepers

© 2008 Cisco Systems, Inc. All rights reserved.

CVOICE v6.0—5-1

Gatekeeper Configuration Steps 1. Configure local and remote zones on the gatekeeper. 2. Configure zone prefixes. 3. Configure technology prefixes. 4. Configure gateways to use H.323 gatekeepers. 5. Configure dial peers.

© 2008 Cisco Systems, Inc. All rights reserved.

CVOICE v6.0—5-2

Single Gatekeeper—Multizone Configuration Scenario San Jose

Houston

Gatekeeper

WAN SanJose (H.323) Phone1-1 2001

Phone1-2 2002

© 2008 Cisco Systems, Inc. All rights reserved.

Houston (H.323)

Phone2-1 3001

Phone2-2 3002

CVOICE v6.0—5-3

Configuring Zones

San Jose

gatekeeper zone local SanJose cisco.com 10.1.1.10 zone local Houston cisco.com enable-intrazone zone remote Austin cisco.com 10.1.1.12 no shutdown

Houston

Gatekeeper 10.1.1.10

GK1

WAN Houston

SanJose

Austin Phone1-1 2001

Phone1-2 2002

© 2008 Cisco Systems, Inc. All rights reserved.

GK2 Gatekeeper 10.1.1.12

Phone2-1 3001

Phone2-2 3002 GK 1 = Gatekeeper 1 GK 2 = Gatekeeper 2 CVOICE v6.0—5-4

Configuring Zone Prefixes

San Jose

gatekeeper zone local SanJose cisco.com 10.1.1.10 zone local Houston cisco.com zone prefix SanJose 2... gw-priority 5 SanJose1 zone prefix SanJose 2... gw-priority 10 SanJose2 no shutdown Gatekeeper SanJose1

WAN

SanJose2 Phone1-1 2001 © 2008 Cisco Systems, Inc. All rights reserved.

Phone1-2 2002 CVOICE v6.0—5-5

Configuring Technology Prefixes

San Jose

gatekeeper zone local SanJose cisco.com 10.1.1.10 zone local Houston cisco.com zone prefix SanJose 2... gw-priority 10 SanJose zone prefix Houston 3... gw-priority 10 Houston gw-type-prefix 99#* gw ipaddr 192.168.1.1 1720 gw-type-prefix 1#* default-technology no shutdown

Houston

Gatekeeper

WAN San Jose

Phone1-1 2001

Phone1-2 2002

© 2008 Cisco Systems, Inc. All rights reserved.

Houston 192.168.1.1

Phone2-1 3001

Phone2-2 3002 CVOICE v6.0—5-6

Registering Gateways Gateway configuration steps: 1. Enable the gateway process. 2. Configure interface commands. 3. Configure dial peers. 4. Optional: Prevent ephone and dial peer registration at the gatekeeper.

© 2008 Cisco Systems, Inc. All rights reserved.

CVOICE v6.0—5-7

Configuring Gateways to Use H.323 Gatekeepers Houston

Gatekeeper (GK1) 192.168.1.15

San Jose

Fa0/1

WAN Houston (H.323) 192.168.1.3

SanJose (H.323) Phone1-1 2001

Phone1-2 2002

CUCME = Cisco Unified Communications Manager Express

Phone2-1 3001

Phone2-2 3002

gateway ! interface Loopback 0 ip address 192.168.1.3 255.255.255.0 h323-gateway voip interface h323-gateway voip bind srcaddr 192.168.1.3 h323-gateway voip id GK1 ipaddr 192.168.1.15 1719 priority 1 h323-gateway voip h323-id Houston h323-gateway voip tech-prefix 1# © 2008 Cisco Systems, Inc. All rights reserved.

CVOICE v6.0—5-8

Configuring a Dial Peer San Jose

Houston

Gatekeeper

Fa0/1

WAN SanJose (H.323) Phone1-1 2001

Phone1-2 2002 Optional

© 2008 Cisco Systems, Inc. All rights reserved.

Houston (H.323)

gateway ! dial-peer voice 1 voip destination pattern 2... tech-prefix 1# session target ras !

Phone2-1 3001

Phone2-2 3002

CVOICE v6.0—5-9

Verifying Gatekeeper Functionality Show commands:  show gatekeeper gw-type-prefix  show gatekeeper status  show gatekeeper zone prefix  show gatekeeper calls  show gatekeeper endpoints

Debug commands:  debug h225 {asn1 | events}  debug h245 {asn1 | events}  debug proxy h323 statistics  debug ras  debug gate main [5] [10]

 show gatekeeper zone status

© 2008 Cisco Systems, Inc. All rights reserved.

CVOICE v6.0—5-10

Verifying Gatekeeper Functionality (Cont.) HQ-1# show gatekeeper status Gatekeeper State: UP Load Balancing: DISABLED Flow Control: DISABLED Zone Name: HQ Zone Name: BR Accounting: DISABLED Endpoint Throttling: DISABLED Security: DISABLED Maximum Remote Bandwidth: unlimited Current Remote Bandwidth: 0 kbps Current Remote Bandwidth (w/ Alt GKs): 0 kbps © 2008 Cisco Systems, Inc. All rights reserved.

CVOICE v6.0—5-11

Verifying Gatekeeper Functionality (Cont.) HQ-1# show gatekeeper zone prefix ZONE PREFIX TABLE ================= GK-NAME

E164-PREFIX

-------

-----------

HQ

1...

BR

2...

© 2008 Cisco Systems, Inc. All rights reserved.

CVOICE v6.0—5-12

Verifying Gatekeeper Functionality (Cont.)

HQ-1# show gatekeeper gw-type-prefix GATEWAY TYPE PREFIX TABLE ========================= Prefix: 2#* Zone HQ master gateway list: 10.1.250.102:1720 BR

© 2008 Cisco Systems, Inc. All rights reserved.

CVOICE v6.0—5-13

Verifying Gatekeeper Functionality (Cont.) HQ-1# show gatekeeper endpoints GATEKEEPER ENDPOINT REGISTRATION ================================ CallSignalAddr Port RASSignalAddr Port Zone Name --------------- ----- --------------- ----- --------10.1.250.101 1720 10.1.250.101 58963 HQ H323-ID: GW-A1 E164-ID: 1101 E164-ID: 1102 Voice Capacity Max.= Avail.= Current.= 0 10.1.250.102 1720 10.1.250.102 58306 BR H323-ID: GW-A2 Voice Capacity Max.= Avail.= Current.= 0 Total number of active registrations = 2

© 2008 Cisco Systems, Inc. All rights reserved.

Type Flags -------H323-GW

VOIP-GW

CVOICE v6.0—5-14

Summary  Gatekeeper configuration steps are done in the gatekeeper configuration mode on Cisco IOS routers.  A single gatekeeper can manage multiple local and remote zones.  A zone prefix is the part of the called number that identifies the zone to which a call hops off. Zone prefixes are usually used to associate an area code to a configured zone.  A technology prefix is an optional H.323 standards-based feature, supported by Cisco gateways and gatekeepers, that enables more flexibility in call routing within an H.323 VoIP network.

© 2008 Cisco Systems, Inc. All rights reserved.

CVOICE v6.0—5-15

Summary (Cont.)  Cisco IOS routers can be registered as gateways with gatekeepers.  The VoIP dial peer determines how to direct calls that originate from a local voice port into the VoIP cloud to the RAS session target.  Several show and debug commands exist for troubleshooting and verifying gatekeeper configuration.

© 2008 Cisco Systems, Inc. All rights reserved.

CVOICE v6.0—5-16

© 2008 Cisco Systems, Inc. All rights reserved.

CVOICE v6.0—5-17