このドキュメントでは、ISDN Basic Rate Interface(BRI; 基本速度インターフェイス)の設定例を紹介し、Terminal Endpoint Identifier(TEI; ターミナル エンドポイント識別子)のネゴシエーション プロセスに関する Cisco ルータの動作について説明します。
このドキュメントに特有の要件はありません。
このドキュメントの情報は、次のソフトウェアとハードウェアのバージョンに基づいています。
Cisco IOSソフトウェア リリース 12.2(6)
すべてのハードウェア プラットフォーム
注:isdn tei-negotiation preserveコマンドは、Cisco IOSソフトウェアリリース12.2(6)および12.2(6)Tで導入されました。
このドキュメントの情報は、特定のラボ環境にあるデバイスに基づいて作成されました。このドキュメントで使用するすべてのデバイスは、初期(デフォルト)設定の状態から起動しています。対象のネットワークが実稼働中である場合には、どのようなコマンドについても、その潜在的な影響について確実に理解しておく必要があります。
ドキュメントの表記法の詳細は、「シスコ テクニカル ティップスの表記法」を参照してください。
一部のヨーロッパ諸国(ベルギーやオランダなど)では節電のため、BRI 回線が一定期間アクティブにならなかった場合、Telephone Company(Telco; 電話会社)が ISDN レイヤ 1 の接続を解除することが通例となっています。次の代替機能があります。
レイヤ 1 のフラップ停止後、すでに割り当てられている TEI を保持できます。
レイヤ 1 がフラップするたびに TEI を再度ネゴシエートするよう、Cisco IOS ソフトウェアを設定できます。
このセクションでは、このドキュメントで説明する機能を設定するために必要な情報を提供しています。
注:この文書で使用されているコマンドの詳細を調べるには、「Command Lookup ツール」を使用してください(登録ユーザのみ)。
このドキュメントでは、次のネットワーク セットアップを使用します。
この例では、2 つの Cisco 2500 ルータを BRI 回線で使用しています。
このドキュメントでは、次の構成を使用します。
kevin
krimson
kevin |
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kevin#show running-config ! version 12.2 service timestamps debug datetime msec service timestamps log datetime msec hostname kevin ! username krimson password ! isdn switch-type basic-net3 ! interface BRI0 no ip address encapsulation ppp dialer rotary-group 1 dialer-group 1 isdn switch-type basic-net3 isdn tei-negotiation preserve no cdp enable ppp authentication chap ! interface Dialer1 ip address 10.9.8.2 255.255.255.0 encapsulation ppp dialer in-band dialer map ip 10.9.8.1 name krimson 027208196 dialer-group 1 no cdp enable ppp authentication chap ! dialer-list 1 protocol ip permit ! line con 0 exec-timeout 0 0 line aux 0 line vty 0 4 exec-timeout 0 0 password login ! end |
krimson |
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krimson#show running-config ! version 12.2 ! service timestamps debug datetime msec service timestamps log datetime msec ! hostname krimson ! username kevin password ! isdn switch-type basic-net3 ! interface BRI0 no ip address encapsulation ppp no ip route-cache no ip mroute-cache no keepalive dialer rotary-group 1 isdn switch-type basic-net3 no fair-queue no cdp enable ppp authentication chap ! interface Dialer1 ip address 10.9.8.1 255.255.255.0 encapsulation ppp no ip route-cache no ip mroute-cache load-interval 30 no keepalive dialer in-band dialer map ip 10.9.8.2 name kevin 027202094 dialer-group 1 no fair-queue no cdp enable ppp authentication chap ! dialer-list 1 protocol ip permit ! line con 0 exec-timeout 0 0 line aux 0 line vty 0 4 exec-timeout 0 0 password login ! end |
ここでは、設定が正しく機能していることを確認するために使用する情報を示します。
一部の show コマンドはアウトプット インタープリタ ツールによってサポートされています(登録ユーザ専用)。このツールを使用することによって、show コマンド出力の分析結果を表示できます。
show isdn status???:すべてのISDNインターフェイスのステータスを表示します。
kevin#show isdn status Global ISDN Switchtype = basic-net3 ISDN BRI0 interface dsl 0, interface ISDN Switchtype = basic-net3 Layer 1 Status: DEACTIVATED Layer 2 Status: Layer 2 NOT Activated !--- TEI is removed Layer 3 Status: 0 Active Layer 3 Call(s) Active dsl 0 CCBs = 0 The Free Channel Mask: 0x3 Number of L2 Discards = 0, L2 Session ID = 10 Total Allocated ISDN CCBs = 0
ここでは、設定のトラブルシューティングに使用できる情報を示します。
注:debugコマンドを発行する前に、『debugコマンドの重要な情報』を参照してください。
debug isdn q921:ISDN インターフェイスの D チャネル(LAPD)のルータで発生しているデータ リンク層(レイヤ 2)のアクセス手順を表示します。
debug isdn q931:ローカル ルータ(ユーザ側)とネットワークの間における ISDN ネットワーク接続(レイヤ 3)のコール設定および解放についての情報を表示します。
debug isdn events ???:ISDNインターフェイスの(ルータ上の)ユーザ側で発生しているISDNイベントを表示します。
debug bri???:ISDN BRIルーティングアクティビティのデバッグ情報を表示します。
次に、kevin のデバッグ出力を示します。
kevin# *Mar 1 03:04:14.235: BRI: write_sid: scp = 0, wrote = 92 *Mar 1 03:04:14.235: BRI: write_sid: scp = 80, wrote = 93 *Mar 1 03:04:14.239: BRI0: DEACTIVATED, state F1, event LSD *Mar 1 03:04:14.243: BRI: write_sid: scp = 0, wrote = 1B *Mar 1 03:04:14.243: BRI: write_sid: scp = 0, wrote = 20 *Mar 1 03:04:14.243: BRI: write_sid: scp = 0, wrote = 92 *Mar 1 03:04:14.247: BRI: write_sid: scp = A0, wrote = 93 *Mar 1 03:04:14.247: BRI0: DEACTIVATED, state F3, event AP *Mar 1 03:04:14.251: BRI: write_sid: scp = 0, wrote = 3 *Mar 1 03:04:14.255: ISDN BR0: Recvd MPH_IIC_IND from L1 *Mar 1 03:04:14.263: BRI: write_sid: scp = 0, wrote = 92 *Mar 1 03:04:14.263: BRI: write_sid: scp = E0, wrote = 93 *Mar 1 03:04:14.267: BRI0: PENDING, state F7, event AI *Mar 1 03:04:14.267: BRI: Received activation indication. *Mar 1 03:04:14.271: Flush all frames in the queue if any *Mar 1 03:04:14.275: ISDN BR0: L1 is IF_ACTIVE *Mar 1 03:04:14.275: ISDN BR0 EVENT: isdn_sw_cstate: State = 4, Old State = 4 *Mar 1 03:04:14.279: ISDN BR0: Incoming call id = 0x0030, dsl 0 *Mar 1 03:04:14.319: ISDN BR0: TX -> IDREQ ri=65279 ai=127 *Mar 1 03:04:14.323: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:04:14.355: ISDN BR0: RX <- IDASSN ri=65279 ai=66 *Mar 1 03:04:14.375: ISDN BR0: TX -> SABMEp c/r=0 sapi=0 tei=66 *Mar 1 03:04:14.379: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:04:14.399: ISDN BR0: RX <- UI c/r=1 sapi=0 tei=127 i=0x08011C05A1040288901801896C0A218332373230383139367009A13237323032303934 *Mar 1 03:04:14.435: SETUP pd = 8 callref = 0x1C *Mar 1 03:04:14.443: Sending Complete *Mar 1 03:04:14.443: Bearer Capability i = 0x8890 *Mar 1 03:04:14.451: Channel ID i = 0x89 *Mar 1 03:04:14.455: Calling Party Number i = 0x21, 0x83, '27208196', Plan:ISDN, Type:National *Mar 1 03:04:14.475: Called Party Number i = 0xA1, '27202094', Plan:ISDN, Type:National *Mar 1 03:04:14.495: ISDN BR0: RX <- UAf c/r=0 sapi=0 tei=66 *Mar 1 03:04:14.503: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0, TEI 66 changed to up *Mar 1 03:04:14.515: CCBRI_Go Fr L3 pkt (Len=35) : *Mar 1 03:04:14.515: 5 1 9C 90 A1 4 2 88 90 18 1 89 6C A 21 83 32 37 32 30 38 31 39 36 70 9 A1 32 37 32 30 32 30 39 34 *Mar 1 03:04:14.527: *Mar 1 03:04:14.531: ISDN BR0: Incoming call id = 0x0031, dsl 0 *Mar 1 03:04:14.535: ISDN BR0: LIF_EVENT: ces/callid 1/0x31 HOST_INCOMING_CALL *Mar 1 03:04:14.543: ISDN BR0: HOST_INCOMING_CALL: (non-POTS) DATA *Mar 1 03:04:14.543: ISDN BR0: HOST_INCOMING_CALL: (1) call_type = DATA *Mar 1 03:04:14.547: ISDN BR0: HOST_INCOMING_CALL: voice_answer_data = FALSE call type is DATA *Mar 1 03:04:14.551: ISDN BR0: Event: Received a DATA call from 27208196 on B1 at 64 Kb/s *Mar 1 03:04:14.551: ISDN BR0: Event: Accepting the call id 0x31 *Mar 1 03:04:14.555: ISDN BR0: RM returned call_type 0 resource type 0 response 1 *Mar 1 03:04:14.559: CCBRI_Go Fr Host InPkgInfo (Len=9) : *Mar 1 03:04:14.563: 7 0 1 0 31 3 18 1 89 *Mar 1 03:04:14.567: *Mar 1 03:04:14.575: ISDN BR0: isdn_send_connect(): msg 4, call id 0x31, ces 1 bchan 0, call type DATA *Mar 1 03:04:14.579: BRI: enable channel B1 *Mar 1 03:04:14.579: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up *Mar 1 03:04:14.591: ISDN: get_isdn_service_state(): idb 0x230B74 bchan 2 is_isdn 1 Not a Pri *Mar 1 03:04:14.595: CCBRI_Go Fr Host InPkgInfo (Len=6) : *Mar 1 03:04:14.599: 4 0 1 0 31 0 *Mar 1 03:04:14.603: *Mar 1 03:04:14.615: ISDN BR0: TX -> INFOc sapi=0 tei=66 ns=0 nr=0 i=0x08019C02180189 *Mar 1 03:04:14.627: CALL_PROC pd = 8 callref = 0x9C *Mar 1 03:04:14.631: Channel ID i = 0x89 *Mar 1 03:04:14.639: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:04:14.663: ISDN BR0: RX <- RRr sapi=0 tei=66 nr=1 *Mar 1 03:04:14.675: ISDN BR0: TX -> INFOc sapi=0 tei=66 ns=1 nr=0 i=0x08019C07 *Mar 1 03:04:14.679: CONNECT pd = 8 callref = 0x9C *Mar 1 03:04:14.687: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:04:14.711: ISDN BR0: RX <- RRr sapi=0 tei=66 nr=2 *Mar 1 03:04:15.567: ISDN BR0: RX <- INFOc sapi=0 tei=66 ns=0 nr=2 i=0x08011C0F *Mar 1 03:04:15.575: CONNECT_ACK pd = 8 callref = 0x1C *Mar 1 03:04:15.595: ISDN BR0: TX -> RRr sapi=0 tei=66 nr=1 *Mar 1 03:04:15.595: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:04:15.619: CCBRI_Go Fr L3 pkt (Len=4) : *Mar 1 03:04:15.619: F 1 9C 92 *Mar 1 03:04:15.623: *Mar 1 03:04:15.627: ISDN BR0: LIF_EVENT: ces/callid 1/0x31 HOST_CONNECT *Mar 1 03:04:15.631: BRI: enable channel B1 *Mar 1 03:04:15.631: ISDN BR0: Event: Connected to 27208196 on B1 at 64 Kb/s *Mar 1 03:04:16.223: BR0:1 DDR: dialer protocol up *Mar 1 03:04:17.187: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state to up *Mar 1 03:04:20.591: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 027208196 krimson *Mar 1 03:04:25.591: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:04:25.595: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:04:25.615: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2
kevin#show isdn status Global ISDN Switchtype = basic-net3 ISDN BRI0 interface dsl 0, interface ISDN Switchtype = basic-net3 Layer 1 Status: ACTIVE Layer 2 Status: TEI = 66, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED I_Queue_Len 0, UI_Queue_Len 0 Layer 3 Status: 1 Active Layer 3 Call(s) CCB:callid=31, sapi=0, ces=1, B-chan=1, calltype=DATA Active dsl 0 CCBs = 1 The Free Channel Mask: 0x80000002 Number of L2 Discards = 0, L2 Session ID = 10 Total Allocated ISDN CCBs = 1
kevin# *Mar 1 03:04:35.623: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:04:35.627: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:04:35.647: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:04:45.655: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:04:45.659: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:04:45.679: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:04:55.683: ISDN BR0: RX <- RRp sapi=0 tei=66 nr=2 *Mar 1 03:04:55.691: ISDN BR0: TX -> RRf sapi=0 tei=66 nr=1 *Mar 1 03:04:55.695: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:05:05.691: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:05:05.695: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:05:05.715: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:05:15.724: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:05:15.728: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:05:15.748: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:05:25.756: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:05:25.760: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:05:25.780: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:05:35.788: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:05:35.792: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:05:35.812: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:05:45.820: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:05:45.824: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:05:45.844: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:05:55.852: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:05:55.856: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:05:55.880: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:06:05.888: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:06:05.892: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:06:05.912: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:06:15.920: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=1 *Mar 1 03:06:15.924: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:06:15.944: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=2 *Mar 1 03:06:17.024: BR0:1 DDR: idle timeout *Mar 1 03:06:17.028: BR0:1 DDR: disconnecting call *Mar 1 03:06:17.028: ISDN BR0: Event: Hangup call to call id 0x31 *Mar 1 03:06:17.032: BRI: disable channel B1 *Mar 1 03:06:17.032: ISDN BR0: process_disconnect(): call id 0x31, call type is DATA, b_idb 0x230B74, ces 1, cause Normal call clearing(0x10) *Mar 1 03:06:17.040: %ISDN-6-DISCONNECT: Interface BRI0:1 disconnected from 27208196 krimson, call lasted 122 seconds *Mar 1 03:06:17.048: ISDN: get_isdn_service_state(): idb 0x230B74 bchan 2 is_isdn 1 Not a Pri *Mar 1 03:06:17.052: CCBRI_Go Fr Host InPkgInfo (Len=13) : *Mar 1 03:06:17.052: 5 0 1 0 31 3 8 1 90 8 2 80 90 *Mar 1 03:06:17.056: *Mar 1 03:06:17.072: ISDN BR0: TX -> INFOc sapi=0 tei=66 ns=2 nr=1 i=0x08019C4508028090 *Mar 1 03:06:17.084: DISCONNECT pd = 8 callref = 0x9C *Mar 1 03:06:17.088: Cause i = 0x8090 - Normal call clearing *Mar 1 03:06:17.096: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:06:17.124: ISDN BR0: RX <- RRr sapi=0 tei=66 nr=3 *Mar 1 03:06:17.556: ISDN BR0: RX <- INFOc sapi=0 tei=66 ns=1 nr=3 i=0x08011C4D *Mar 1 03:06:17.564: RELEASE pd = 8 callref = 0x1C *Mar 1 03:06:17.580: CCBRI_Go Fr L3 pkt (Len=4) : *Mar 1 03:06:17.584: 4D 1 9C 97 *Mar 1 03:06:17.584: *Mar 1 03:06:17.592: ISDN BR0: LIF_EVENT: ces/callid 1/0x31 HOST_DISCONNECT_ACK *Mar 1 03:06:17.596: ISDN: get_isdn_service_state(): idb 0x230B74 bchan 2 is_isdn 1 Not a Pri *Mar 1 03:06:17.600: ISDN BR0: HOST_DISCONNECT_ACK: call type is DATA *Mar 1 03:06:17.604: BRI: disable channel B1 *Mar 1 03:06:17.604: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down *Mar 1 03:06:17.612: BR0:1 DDR: disconnecting call *Mar 1 03:06:17.616: ISDN BR0: LIF_EVENT: ces/callid 1/0x31 HOST_DISCONNECT_ACK *Mar 1 03:06:17.620: ISDN: get_isdn_service_state(): idb 0x230B74 bchan 2 is_isdn 1 Not a Pri *Mar 1 03:06:17.624: ISDN BR0: HOST_DISCONNECT_ACK: call type is DATA *Mar 1 03:06:17.628: BRI: disable channel B1 *Mar 1 03:06:17.636: ISDN BR0: TX -> RRr sapi=0 tei=66 nr=2 *Mar 1 03:06:17.640: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:06:17.644: ISDN BR0: TX -> INFOc sapi=0 tei=66 ns=3 nr=2 i=0x08019C5A *Mar 1 03:06:17.652: RELEASE_COMP pd = 8 callref = 0x9C *Mar 1 03:06:17.660: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:06:17.684: ISDN BR0: RX <- RRr sapi=0 tei=66 nr=4 *Mar 1 03:06:18.940: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state to down *Mar 1 03:06:27.693: ISDN BR0: TX -> RRp sapi=0 tei=66 nr=2 *Mar 1 03:06:27.697: BRI: write_sid: scp = 0, wrote = E *Mar 1 03:06:27.717: ISDN BR0: RX <- RRf sapi=0 tei=66 nr=4 *Mar 1 03:06:32.781: ISDN BR0: RX <- DISCp c/r=1 sapi=0 tei=66 *Mar 1 03:06:32.785: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0, TEI 66 changed to down *Mar 1 03:06:32.793: ISDN BR0: TX -> UAf c/r=1 sapi=0 tei=66 *Mar 1 03:06:32.797: BRI: write_sid: scp = 0, wrote = E
kevin#show isdn status Global ISDN Switchtype = basic-net3 ISDN BRI0 interface dsl 0, interface ISDN Switchtype = basic-net3 Layer 1 Status: ACTIVE Layer 2 Status: TEI = 66, Ces = 1, SAPI = 0, State = TEI_ASSIGNED !--- ISDN Layer 2 is disconnected I_Queue_Len 0, UI_Queue_Len 0 Layer 3 Status: 0 Active Layer 3 Call(s) Active dsl 0 CCBs = 0 The Free Channel Mask: 0x3 Number of L2 Discards = 0, L2 Session ID = 10 Total Allocated ISDN CCBs = 0
kevin# *Mar 1 03:06:42.881: BRI: write_sid: scp = 0, wrote = 92 *Mar 1 03:06:42.885: BRI: write_sid: scp = 90, wrote = 93 *Mar 1 03:06:42.885: BRI0: ACTIVATED, state F2, event DI *Mar 1 03:06:42.889: BRI: T4 timer started DEACT timer expired *Mar 1 03:06:43.493: BRI: write_sid: scp = 0, wrote = 92 *Mar 1 03:06:43.493: BRI: write_sid: scp = 90, wrote = 93 *Mar 1 03:06:43.497: BRI: write_sid: scp = 0, wrote = 1 *Mar 1 03:06:43.497: BRI: write_sid: scp = 0, wrote = 0 *Mar 1 03:06:43.501: ISDN BR0 EVENT: isdn_sw_cstate: State = 0, Old State = 4 *Mar 1 03:06:43.505: BRI: disable channel B1 *Mar 1 03:06:43.505: BRI: disable channel B2 *Mar 1 03:06:43.509: ISDN BR0: Physical layer is IF_DOWN !--- ISDN Layer 1 deactivated due to no calls on BRI *Mar 1 03:06:43.509: ISDN BR0: Shutting down ME *Mar 1 03:06:43.513: ISDN BR0: Shutting down ISDN Layer 3
kevin#show isdn status Global ISDN Switchtype = basic-net3 ISDN BRI0 interface dsl 0, interface ISDN Switchtype = basic-net3 Layer 1 Status: DEACTIVATED Layer 2 Status: TEI = 66, Ces = 1, SAPI = 0, State = TEI_ASSIGNED !--- TEI is preserved due to used configuration I_Queue_Len 0, UI_Queue_Len 0 Layer 3 Status: 0 Active Layer 3 Call(s) Active dsl 0 CCBs = 0 The Free Channel Mask: 0x3 Number of L2 Discards = 0, L2 Session ID = 11 Total Allocated ISDN CCBs = 0
改定 | 発行日 | コメント |
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1.0 |
09-Sep-2005 |
初版 |