Backup Center Configuration backup center OverviewTo improve network reliability, VRP uses the backup center to provide comprehensive backup functions:1: The backup interface is called the primary interface. Any physical interface or sub-interface on the vro can be used as the primary interface. A logical channel such as X.25 or a virtual circuit of Frame Relay on any interface can also be used as the primary interface.2: The backup interface for other interfaces is called the backup interface.
required to process IN business requests under the control of SCF
◆ Business interaction management
4) protocol functions
As an open, multi-protocol entity, standard protocols must be used to communicate with various media gateways, terminals, and networks. These protocols include: h.248, SCTP, ISUP, TUP, INAP, H.323, RADIUS, SNMP, SIP, M3UA, MGCP, BICC, PRO, BRI, etc.
5) interconnection functions
The signaling gateway can be used to achieve interc
Cisco network module slot, and a new advanced integration module AIM) slot. Cisco 1600.
The WAN interface cards used by the Cisco 2600 module and the Cisco 3600 series routers support a variety of serial ports, isdn bri, And CSU and DSU) and other options to achieve master-slave WAN connection.
The network modules used in the Cisco 2600 and Cisco 3600 series support multiple options, including high-density serial ports, dial-up pools, and multi-servi
; 38400bps-78m; 56000bps-60m; 64000bps-50m; 2048000b.
Below are several common but important control signals in v.24 and v.35 procedures:
Dtrdata terminal ready, data terminal ready)
Dsrdata set ready data preparation), mainly used to transmit negotiation information between devices.
Dcddata carrier detect data carrier detection), used by devices to detect the current link status.
Rtsrequest to send requests)
Ctsclear to send clear and send)
Bri: Conn
internal address and the egress addressDisadvantage: When the egress address resources are scarce, only a small number of hosts can be connected to the internet.
2. Internal address share egress addressThe router uses the egress address and port number, as well as the external host address and port number as the interface. The internal address port number is a random number greater than 1024, and the external host port number is recognized as a standard port number. In this way, you can use the
negotiated at call setup.Application in the real world
The server that we have specified for this application has the ability to handle around und 1000 concurrent CILS through the gateway and enough storage for voicemail boxes for all users. CILS have no real effect on the server inside the PBX because of one of the amazing SIP features: reinvite. the reinvite feature allows the SIP proxy to set up the call and then directly connect the endpoints to each other for the audio flow. the server onl
2009 year 6 month 3 , microsoft and Intel announce Cali Bri " lang=" En-us "> CRM 4.0 the benchmark test proves that Microsoft CRM run on Intel Xeon 5500 5 over 2.9 millions of daily visits, it can run well.
At the same timeOracle SiebelIn2008Year10Test results of the month:
font-family:Calibri" lang="en-US">Oracle Siebel 8.0:14,000宋体" lang="zh-CN">User/1.6Millions of visits per day:Calibri" lang="en-US">US $150,000
() communication methods.
A. Point-to-Point
B. opposite to the point
C. Face points
D. Face to face
17. In the bri service of ISDN, the speed of a B channel is ()
A. 64 Kbps
B. 128 Kbps
C. 256 kbps
D. 1 Mbps
18. The advantage of using a domain name is ()
A. Convenient Management
B. Easy to remember
C. Save Money
D. Convenient Input
19. There are two switch methods. The () method is suitable for scenarios with many line errors.
A. Direct forwarding
B.
indicates that the configuration is not loaded into the system, often used for Password Recovery
4: Common show commands
Ccna # showrunning-config # view the current configuration, including the default configuration of the device
Ccna # showstartup-config # view the startup configuration, that is, the saved configuration
Ccna # showversion # view the version system, that is, display the main content of system self-check
Ccna # showflash: # view the flash, including space and file confidence
Port mirroring, which forwards data traffic from one or more ports to a specified port via a switch or router for traffic monitoring analysis.The function of mirroring is simply to mirror the monitored traffic to the monitoring port so that the monitored traffic can be faulted, traffic analyzed, and the traffic is backed up, the monitoring port is usually directly connected with the monitoring host.Take Cisco as an example:1. Connect to the switch using SSH or Telnetl and enter the user name and
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This t
; 9600bps-312m; 19200bps-156m; 38400bps-78m; 56000bps-60m; 64000bps-50m; 2048000b.
6. below are several common but important control signals in V.24 and V.35 procedures:
DTR (Data terminal ready, Data terminal ready)
DSR (Data Set Ready Data preparation)
It is mainly used to transmit negotiation information between devices.
DCD (Data Carrier Detect Data Carrier detection)
Used by devices to detect the current link status.
RTS (request to send)
CTS (clear to send clear send)
7.
PPPoE session PADT packet may be sent within the selected time after the session starts. It is mainly used to terminate the PPPoEPPPoE basic principle (session phase) configuration.Server: layer-3 nested configuration; address pool defined; a template defined and an address pool called; pppoe group called template, pppoe group is applied to int f1/0 no shu pppoe enable group cisco under the interface to enable pppoe, call the cisco group bba-group pppoe cisco to define the PPPOE group name cisc
software has*mar 1 00:03:35.721:%imagemgr-6-auto_advise_sw:been added to the stack. The storage*mar 1 00:03:35.721:%imagemgr-6-auto_advise_sw:devices on any of the stack members has*mar 1 00:03:35.721:%imagemgr-6-auto_advise_sw:been scanned, and the software required*mar 1 00:03:35.721:%imagemgr-6-auto_advise_sw:to make all stacks members compatible with*mar 1 00:03:35.721:%imagemgr-6-auto_advise_sw:each other is not found. The "Archive*mar 1 00:03:35.721:%IMAGEMGR-6-AUTO_ADVISE_SW:DOWNLOAD-SW
The same principle as HSRP, two physical devices virtual one IP and MacDifferences from HSRP:1, roleHSRP Active/standbyVRRP Master/backup2, virtual addressHSRP cannot be a virtual network address that already existsVRRP can be a virtual network already exists address3,Hello packet intervalHSRP master ready to send hello; address 224.0.0.2; interval 3s timeout 10sVRRP only Master sends helloInterval 1s timeout 3sMulticast address 224.0.0.184, shootout modeHSRP Manual OpenVRRP is turned on by defa
maximum discount Lindsay can get.InputThe first line of input gives the number of test scenarios, 1≤t≤20. Each scenario consists of lines of input. The first gives the number of items Lindsay is buying, 1≤n≤20000. The next line gives the prices of these items, 1≤pi≤20000.OutputFor each scenario, output one line giving the maximum discount Lindsay can get by selectively choosing which items she BRI NGS to the counter at the same time.Sample Input16400
receivingRouter RIPPassive-interface default//Set all interfaces to be interfaceRouter RIPNo passive-interface s1/0//Cancel a passive interfaceDebug IP RipRoute Summary >After you turn off auto-summarization in RIP, you can do a manual summary on an interface. Note, however, that the aggregated network number cannot cross the main class network. RIP does not support CIDR.650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M02/80/26/wKioL1c5lKaQg1KZAAA7pWl8484978.png "title=" screen Shot 2016
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