Cisco Systems VIP-4R/4T manual Router# ping 1.1.1.10 Return Type escape sequence to abort

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VIP Port Adapter Functions

Following is an example of a successful ping command to a remote server with the address 1.1.1.10:

Router# ping 1.1.1.10 <Return> Type escape sequence to abort.

Sending 5, 100-byte ICMP Echoes to 1.1.1.10, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/15/64 ms Router#

If the connection fails, verify that you have the correct IP address for the server and that the server is active (powered on), and repeat the ping command.

The loopback test allows you to detect and isolate equipment malfunctions by testing the connection between the 4T port adapter interface and a remote device such as modems or CSU/DSUs. The loopback subcommand sends a series of packets out to and through the device (or cable), and back to the 4T port adapter interface. If the packets complete the loop, the connection is good. If not, you can isolate a fault to the remote device or interface cable in the path of the loopback test.

Note You must conﬁgure a clock rate on the port before performing a loopback test.

Depending on the mode of the port, issuing the loopback command checks the following path:

•When no interface cable is attached to the 4T port adapter interface, or if a DCE cable is attached to the port, the loopback command tests the path between the VIP and the interface port only (without leaving the VIP and port adapter).

•When a DTE cable is attached to the port, the loopback command tests the path between the VIP and the near (VIP) side of the DSU or modem to test the 4T port adapter interface and interface cable. (The X.21 DTE interface cable does not support this loopback test; see the following Note.)

Refer to the appropriate software conﬁguration document for command descriptions and examples.

Note The X.21 interface deﬁnition does not include a loopback deﬁnition. On the 4T port adapter, the X.21 DTE interface does not support the loopback function. Because of the internal clock signal present on the 4T port adapter interfaces, loopback will function on an X.21 DCE interface.

This completes the conﬁguration procedure for the new 4T port adapter serial interfaces.

VIP-4R/4T Installation and Configuration 73

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Contents VIP-4R/4T Installation and Conﬁguration Table of Contents Versatile Interface Processor Functions What is the VIP?Dram VIP Software Prerequisites What is the Cisco 7000 Family?VIP Hardware Prerequisites Cisco 7000, Interface Processor End Cisco 7000 SeriesCisco 7010, Interface Processor End Cisco 7500 SeriesCisco 7507, Interface Processor End Cisco 7513, Interface Processor End VIP Port Adapter Hardware Conﬁguration Overview VIP Microcode Overview VIP Installation PrerequisitesList of Parts and Tools Telephone Wiring Guidelines Safety GuidelinesElectrical Equipment Guidelines Preventing Electrostatic Discharge DamageOnline Insertion and Removal-An Overview Versatile Interface Processor Functions H1984 Removing an Interface Processor Filler VIP InstallationRemoving a VIP Captive installation screws Installing a VIP Checking the VIP Installation Checking the Installation and Verifying VIP StatusVersatile Interface Processor Functions Verifying VIP Status Using show Commands Router# show protocols Upgrading VIP Microcode Router# show flash Loaded from Flash Handling a Dram SIMM-Example Only Upgrading and Replacing Dram SIMMsOrientation of Dram SIMMs U1 and U2 on VIP Motherboard Removing and Replacing Dram SIMMs 4R Port Adapter VIP Port Adapter FunctionsToken Ring Speciﬁcations and Physical Connections Token Ring OverviewVIP Port Adapter Functions Token Ring Network Physical Connections Token Ring Connection EquipmentToken Ring Speed Considerations Token Ring Distance Limitations4R Port Adapter LEDs 4R Port Adapter Receptacles and Cables 4R Port Adapter Receptacles, Cables, and PinoutsAttaching 4R Port Adapter Interface Cables 4R Port Adapter Receptacle PinoutConﬁguring the 4R Interfaces Setup ConﬁgureUsing the Setup Command Using the Exec Command InterpreterRouter# setup Using the Conﬁgure Exec Command 4R Token Ring Interface Port Number Example Cisco 7505 Shown 4R Slot, Port Adapter, and Port Numbers in a Cisco 4R Slot, Port Adapter, and Port Numbers in a Cisco Basic Conﬁguration Guidelines ARP type ARPA, ARP TimeoutChecking the Conﬁguration Synchronous Serial Overview 4T Port AdapterVIP Port Adapter Functions 4T Port Adapter Speciﬁcations Shows the 4T port adapter installed on the VIP-4R/4T4T Serial Connection Equipment Serial Distance LimitationsEIA/TIA-232 Connections Connections EIA/TIA-449 Connections4T Port Adapter LEDs EIA-530 ConnectionsSerial Port Adapter Receptacles and Cables 4T Port Adapter Receptacles, Cables, and PinoutsVIP Port Adapter Functions Serial Port Adapter Cables Serial Port Adapter Cable PinoutsRTS/CTS CTS/RTS DSR/DTR DTR/DSR SD+ RTS/CTS RTS/CTS CTS/RTS DSR/DTR DTR/DSR DCD/LL Rlsd LL/DCD RTS/CTS+ RTS+ CTS/RTS+ DSR/DTR+ DSR+ DCD/DCD+ Correct Attaching 4T Port Adapter Interface CablesIncorrect, cable upside down Conﬁguring the 4T Interfaces 4T Serial Interface Port Number Example Cisco 7505 Shown 4T Slot, Port Adapter, and Port Numbers in a Cisco Slot Adapter Port Port n Serial3/1/0 is administratively down, line protocol is down Setting the Clock Rate Conﬁguring Timing Clock SignalsConﬁguring Nrzi Format Inverting the Clock SignalReplacing Port Adapter Cables Conﬁguring CRCsEnter Conﬁguration mode again and bring the port back up Shutting Down an Interface Enter the shutdown command, as followsRouter# show int serial 1/1/0 Conﬁguring InterfacesWrite the new conﬁguration to memory as follows Using the ping and loopback Commands Using Show Commands to Verify the VIP StatusRouter# ping 1.1.1.10 Return Type escape sequence to abort Cisco Information Online