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VC-289 Cisco IOS Voice, Video, and Fax Configuration Guide Configuring H.323 Gatekeepers and Proxies This chapter descri bes how to configure the Cisco Multimed ia Conference Ma nager . The Multimedi a Conferen ce Manager pro vides gatek eeper and proxy capabilities required for service pro visioning and management of H.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Fe atures VC-290 Cisco IOS Voice, Video, and Fax Configuration Guide Multimedia Conference Manager provides a rich list of netw orking capabilities, includ ing the follo wing: • A means to implemen t quality of service (QoS), wh ich is required for the successful de ployment of H.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Features VC-291 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e • Interzone Routing Using E.1 64 Addresses, page 294 • HSRP Support, page 296 Zone and Subnet Configuration A zone is def ined as the set of H.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Fe atures VC-292 Cisco IOS Voice, Video, and Fax Configuration Guide For e xample, the local gatekeeper ca n be configured with the kno w ledg e that zone prefix “212.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Features VC-293 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Terminal Name Registration Gatekeepers recognize one of tw o types of terminal aliases, or termi nal names: • H.323 IDs, which are arbitrary , case-sensitive te xt strings • E.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Fe atures VC-294 Cisco IOS Voice, Video, and Fax Configuration Guide Interzone Routing Using E.164 Addresses Interzone routing may be conf igured using E.164 addresses. T wo types of address destinat ions are used in H.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Features VC-295 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e T o enable the gatekeeper to sel ect the appropriate hop-of f gate way , use the gw-type-pref ix command to configure technology or gat ew ay-type prefixes.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Fe atures VC-296 Cisco IOS Voice, Video, and Fax Configuration Guide Note For ease of maintenance, the same pref ix type shoul d be used t o denote the same gate way type in all zones under your administratio n.
Configuring H.323 Gate keepers an d Proxies H.323 Proxy Features VC-297 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Note Gatekeeper failover will not be c omplete ly tran sparent to endpoints and gatekeeper s. When the standby gatekeeper tak es over , it does not have th e state of the failed gatekeeper .
Configuring H.323 Gatekeepers and Proxies H.323 Proxy Features VC-298 Cisco IOS Voice, Video, and Fax Configuration Guide Proxy Inside the Firewall H.323 is a comple x, dynamic protocol that consists of se veral interrelated subprotocols.
Configuring H.323 Gate keepers an d Proxies H.323 Proxy Features VC-299 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Proxy in Co-Edge Mode If H.
Configuring H.323 Gatekeepers and Proxies H.323 Proxy Features VC-300 Cisco IOS Voice, Video, and Fax Configuration Guide Proxy Outside the Firewall T o place the proxy and gatekeeper o utside the fire wall, two condit ions must exist. First, the f irew all must support H.
Configuring H.323 Gate keepers an d Proxies H.323 Proxy Features VC-301 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Quality of Service Quality of service (QoS) enables comple x networks to control and predictably service a v ariety of applications.
Configuring H.323 Gatekeepers and Proxies H.323 Prerequisite Tasks an d Restrictions VC-302 Cisco IOS Voice, Video, and Fax Configuration Guide Application-specific routing is simple. When the proxy recei ves outb ound traff ic, it dire cts traff ic to an interface that is connect ed directly to the QoS netw ork.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-303 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e • The number of remote gatek eepers multiplied by the d elay per LRQ cannot exceed th e Routing Information Prot ocol (RIP) timeout.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-304 Cisco IOS Voice, Video, and Fax Configuration Guide Starting a Gatekeeper T o enter gatekeeper conf iguration.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-305 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Step 3 Router(config-gk)# zone prefix gatekeeper-name e164-prefix [ blast | seq ] [ gw-priority priority gw-alias [ gw-alias , .
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-306 Cisco IOS Voice, Video, and Fax Configuration Guide The local-gatek eeper-name ar gument should be a Domain Name System (DNS) host name if DNS is to be used to locate remote zones.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-307 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Note T o explicitly enable or disabl e a particular endpoint, specify its host addr ess using a 32-bit subnet mask.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-308 Cisco IOS Voice, Video, and Fax Configuration Guide zone3.comintxt“r as gk.3@gk.zone3.com:1725” zone4.comintxt “ras gk4@gk.zone4.com:1725 123” zone5.comintxt “ras gk5@101.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-309 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e zone remote gnet-2503-3-gk cisco.com 172.18.194.134 1719 zone prefix gnet-2503-2-gk 919....... zone prefix gnet-2600-1-gk 919.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-310 Cisco IOS Voice, Video, and Fax Configuration Guide Configuring Red undant Gatekeepers for a Zone Prefix T o .
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-311 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e T o verify whether the LRQs will b e sent sequentially or simultaneously to the g atekeepers, enter the show running-conf ig command.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-312 Cisco IOS Voice, Video, and Fax Configuration Guide Y ou can enter the hopoff ke yword and gkid ar gument multiple times in the same co mmand to define a group of gatek eepers that will service a gi ven techno logy prefix .
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-313 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Configuring Static Nodes In some cases, the registrat ion information is not accessible for a terminal or endpoint from any gatekeeper .
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-314 Cisco IOS Voice, Video, and Fax Configuration Guide Configuring H.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-315 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e – krb5-telnet —Uses the Kerberos 5 T elnet authentication prot ocol when using T elnet to connect to th e router .
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-316 Cisco IOS Voice, Video, and Fax Configuration Guide • timeout —(Optional) Specif ies the time interv al (in seconds) for which th e rout er waits for the RADIUS server to reply before ret ransmitting.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-317 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Step 4 Router(config)# radius-server key { 0 string | 7 string | string } Sets the authenticati on and encryption ke y for all RADIUS communications betw een the router and the RADIUS daemon.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-318 Cisco IOS Voice, Video, and Fax Configuration Guide After the pre vious steps ha ve been completed, ente r ea.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-319 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e In addition to the above configuration, mak e sure th.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-320 Cisco IOS Voice, Video, and Fax Configuration Guide Configuring User Accounti ng Activity for RADIUS After AA.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-321 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e For more inf ormation about AAA connecti on accounti ng services, refer to the Cisco IOS Security Confi guration Gui de .
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-322 Cisco IOS Voice, Video, and Fax Configuration Guide Configuring H.323 Version 2 Features T o configure H.32 3 V ersi on 2 features using the Ci sco gatekeeper , perform the follo wing conf iguration tasks.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-323 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Configuring a Dialing Prefix for E ach Gateway T o co.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-324 Cisco IOS Voice, Video, and Fax Configuration Guide T o put all your gate ways in the same zone, use the gw-priority option and specify which gate ways are used for calling dif ferent area codes.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-325 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e • Prefix 6 50 is added to gatekeeper localg k, and priority 0 is assigned to gate way gw1. • A priority 0 is assigned t o gatew ay gw1 to exclu de it from the gate way pool for pref ix 650.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-326 Cisco IOS Voice, Video, and Fax Configuration Guide The follo wing is an examp le of an RRQ notification sent from t he gatekeeper to the serv er when the abov e trigger condition matches: REQUEST RRQ Version-id:1 From:sj.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-327 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Configuring Gatekeeper Tr iggers for Interaction wi t.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-328 Cisco IOS Voice, Video, and Fax Configuration Guide Step 4 Router(config)# destination-info { e164 | email-id | h323-id } value Conf igures a trigger that is based on a particular destination.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-329 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Note Repeat Steps 2 through 8 i n the above conf iguration task table for each trigger t hat you want to define.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-330 Cisco IOS Voice, Video, and Fax Configuration Guide Note T o remove a trigger , enter the no server trigger command. T o temporarily suspend a trigger , enter the trigger conf iguration mode, as described in Step 2, and enter the shutdo wn subcommand.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-331 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Verifying Gatekeeper Proxied Ac cess Configuration Us.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-332 Cisco IOS Voice, Video, and Fax Configuration Guide Configuring a Forced Disconn ect on a Gatekeeper T o forc.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-333 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Configuring a Pr oxy Without ASR T o start the proxy without appl ication-specific rou ting (ASR), start the proxy an d then define the H .
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-334 Cisco IOS Voice, Video, and Fax Configuration Guide • : channel -gr oup —Specifi es a T1 channel group number i n the range 0 t o 23 defined with the channel-group co ntroller conf iguration command.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-335 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Step 5 Router(config-if)# h323 gatekeeper [ id gatekeeper-id ] { ipaddr ipaddr [ port ] | multicast } Specifies the gatekeeper a ssociated with a proxy and controls ho w the gatekeeper is di scovered.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-336 Cisco IOS Voice, Video, and Fax Configuration Guide Ta b l e 2 6 lists interface types that may be used for the type argument in St ep 2 of the configu ration task table in th e “Confi guring a Proxy W ithout ASR” section on page 333 .
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-337 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Configuring a Pr oxy with ASR T o enable ASR on the proxy , start the proxy and th en def ine the H.323 name, zone, and QoS parameters on the loopback interface.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-338 Cisco IOS Voice, Video, and Fax Configuration Guide Step 3 Router(config-if)# ip address ip-address mask [ secondary ] Sets a primary or s econdary IP address f or an interface.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-339 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Step 9 Router(config-if)# h323 asr [ bandwidth max-bandwidth ] Enables ASR and specifies the maximum bandwidth for a proxy .
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-340 Cisco IOS Voice, Video, and Fax Configuration Guide Step 20 Router(config)# access-list access-list-number { .
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-341 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e • destination-object —(Op tional) Contains the ma.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-342 Cisco IOS Voice, Video, and Fax Configuration Guide Note ASR is not supported on Frame Relay or A TM interfaces for the Cisco MC3810 platf orm.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Task List VC-343 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Step 3 Router(config-if)# ip address ip-address mask [ secondary ] Sets a primary or s econdary IP address f or an interface.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Task List VC-344 Cisco IOS Voice, Video, and Fax Configuration Guide Step 9 Router(config-if)# h323 asr [ bandwidth max-bandwidth ] Enables ASR and specif ies the maximum bandwidth for a proxy .
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Examp les VC-345 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e H.323 Gatekeeper Configuration Examples This section .
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Examples VC-346 Cisco IOS Voice, Video, and Fax Configuration Guide – Config uring a Co-Edge Proxy with ASR W ithout Subnett.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Examp les VC-347 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e ! Preserve our good QoS by not allowing excessive amounts of H.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Examples VC-348 Cisco IOS Voice, Video, and Fax Configuration Guide Similarly , in ny (Ne w Y ork in the 212 area code), gate .
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Examp les VC-349 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Gatekeeper gk-sj checks for a technol ogy prefix mat ch but doe s not find one. It th en searches for a zon e pref ix match and fails ag ain.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Examples VC-350 Cisco IOS Voice, Video, and Fax Configuration Guide Note The no shut command is issued on both gatek eepers, primary and secondary .
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Examp les VC-351 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Enabling the Proxy to Forward H.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Examples VC-352 Cisco IOS Voice, Video, and Fax Configuration Guide Assuming these requirements are met, conf igure the networ.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Examp les VC-353 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e interface Ethernet0 ip address 172.20.0.1 255.255.0.0 ! interface Ethernet1 ip address 172.22.0.1 255.255.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Examples VC-354 Cisco IOS Voice, Video, and Fax Configuration Guide Co-Edge Proxy with Subnetting Example Figure 64 and the e xamples that follo w illustrate h ow to conf igure Enhanced IGRP on all netw orks.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Examp les VC-355 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e access-list 11 deny 172.21.0.0 0.0.0.63 access-list 11 permit any access-list 101 permit ip any host 172.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Examples VC-356 Cisco IOS Voice, Video, and Fax Configuration Guide Configuring an Inside-Edge Proxy w ith ASR Without Subnetting Example The confi guration of the co-edge proxy in Edge net 1 has already b een presented abov e.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Examp les VC-357 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e ip access-group 101 in ip access-group 101 out ! interface Ethernet2 ip address 172.21.0.2 255.255.0.0 ! interface Serial0 ip address 10.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Examples VC-358 Cisco IOS Voice, Video, and Fax Configuration Guide PX1 Configuration The follo wing output is for th e PX1 configurati on: ! version 11.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Examp les VC-359 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e Configuring a Closed Co-Edge Proxy with ASR Without Subnetting Example Figure 67 illust rates how to conf igure RIP on the edge networks and IGRP on th e two backbone networks.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Examples VC-360 Cisco IOS Voice, Video, and Fax Configuration Guide network 172.20.0.0 network 10.0.0.0 ! router igrp 4000 network 172.22.0.0 network 101.0.0.0 ! ip classless access-list 101 permit ip any host 10.
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Examp les VC-361 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e A priority 0 is assigned to gatew a y gw1 to exclude it from the gate w ay pool for prefix 650.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Examples VC-362 Cisco IOS Voice, Video, and Fax Configuration Guide Removing a Proxy Example The follo wing exampl e shows h ow to remo ve on e or more proxy statements for the remote zone german y .
Configuring H.323 Gate keepers an d Proxies H.323 Gatekeeper Configuration Examp les VC-363 Cisco IOS Vo ice, Video, and Fa x Configuration Guid e GKTMP and RAS Messages Example The follo wing is an example of a gatekeeper that has interaction w ith exte rnal applications.
Configuring H.323 Gatekeepers and Proxies H.323 Gatekeeper Config uration Examples VC-364 Cisco IOS Voice, Video, and Fax Configuration Guide.
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