本文探討如何瞭解Cisco IOS®平台上撥號對等體的運作狀態。
本文檔的讀者應瞭解以下主題:
如果語音網路(VoIP、VoFR、VoATM)和POTS撥號對等體無效,且處於「操作狀態」,則不會考慮將其用於Cisco IOS路由器/網關入站和出站撥號對等體匹配過程。撥號對等體必須符合以下條件之一才能被視為有效/可操作:
已設定destination-pattern和voice-port或session target。
已配置傳入called-number。
已配置Answer-address。
本文件所述內容不限於特定軟體和硬體版本。
如需文件慣例的詳細資訊,請參閱思科技術提示慣例。
基於上述三個規則條件,此表顯示了處於關閉操作狀態的撥號對等體配置示例。
撥號對等體示例 |
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dial-peer voice 1 pots port 1/0:23 !--- Invalid dial-peer (rule 1): Has voice-port configured only. ! dial-peer voice 2 pots destination-pattern 1T !--- Invalid dial-peer (rule 1): Has destination-pattern configured only. ! dial-peer voice 6 voip session target ipv4:172.16.13.111 !--- Invalid dial-peer (rule 1): Has session target configured only. ! dial-peer voice 7 voip destination-pattern 83... !--- Invalid dial-peer (rule 1): Has destination-pattern configured only. ! |
注意:無任何子命令的撥號對等體配置語句因違反1、2和3而被視為無效。
根據前三個規則條件,此表顯示處於運行操作狀態的撥號對等體配置示例。
有效對等體示例 |
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dial-peer voice 3 pots destination-pattern 1T port 1/0:23 prefix 1 !--- Valid dial-peer (rule 1): Has voice-port and destination-pattern configured. ! dial-peer voice 4 pots incoming called-number 83. !--- Valid dial-peer (rule 2): Has incoming called-number configured. ! dial-peer voice 5 pots answer-address 408 !--- Valid dial-peer (rule 2): Has answer-address configured. ss configured. ! dial-peer voice 8 voip destination-pattern 83... session target ipv4:172.16.13.111 !--- Valid dial-peer (rule 1): Has session target and destination-pattern configured. ! dial-peer voice 9 voip incoming called-number . !--- Valid dial-peer (rule 2): Has incoming called-number configured. ! dial-peer voice 10 voip answer-address 6666 !--- Valid dial-peer (rule 2): Has answer-address configured. ! |
注意:假設用於入站匹配的撥號對等體配置了傳入called-number或answer-address,並且新增了destination-pattern命令。新增命令destination-pattern string後,撥號對等體將關閉操作。這是因為路由器將destination-pattern對映到地址(session target)或語音埠(port)以進行出站撥號對等體匹配。在這種情況下,沒有要對映的內容。例如,如果在撥號對等體4、5、9和10上新增destination-pattern,則會將其運行狀態更改為down。
注意:在撥號對等體4和5上,如果刪除destination-pattern並新增port命令,則撥號對等體仍然有效。同樣,如果刪除destination-pattern並在9和10上新增session-target命令,它們也將保持可操作性。
若要檢查撥號對等體配置的有效性,請使用Cisco IOS命令show dial-peer voice summary。
檢查撥號對等體配置 |
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2600#show dial-peer voice summary dial-peer hunt 0 PASS TAG TYPE ADMIN OPER PREFIX DEST-PATTERN PREF THRU SESS-TARGET PORT 1 pots up down 0 1/0:23 2 pots up down 1T 0 3 pots up up 1 1T 0 1/0:23 4 pots up up 0 5 pots up up 0 6 voip up down 0 syst ipv4:172.16.13.111 7 voip up down 83... 0 syst 8 voip up up 83... 0 syst ipv4:172.16.13.111 9 voip up up 0 syst 10 voip up up 0 syst |