Installation guide

3-43
Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Chapter 3 Installing the IGX
Making Frame Relay Connections
to only V.35 or X.21 interfaces.) Make sure that the firmware revision of the FRM in the kit matches the
firmware in the installed FRM. Model D firmware supports V.35 and X.21 interfaces. Model E firmware
supports T1 and E1 interfaces.
When you install a redundant card set with either a V.35 or X.21 interface, you must change the daughter
cards on the existing FRI that specify DCE or DTE mode at each port. Install the higher impedance
(200 ohms) version cards that are in the Y-cable kit.
Y-cable redundancy is not allowed between inconsistent back card types, such as an FRI T1 and an FRI
V.3 5 . The dspyred command display shows any conflict in reverse video. (Refer also to the descriptions
of the upcln and upfrport commands in the Cisco WAN Switching Command Reference.)
After the hardware is installed, use the addyred command to reconfigure the node to recognize the card
redundancy. Refer to the Cisco WAN Switching Command Reference for more information on the
commands addyred, delyred, dspyred, and ptyred.
Setting Up Frame Relay Ports and Connections (FRM)
This section outlines the steps for setting up and deleting Frame Relay ports, adding and configuring
connections, and bundling connections. As the steps show, some commands apply to channelized
connections (T1, E1, or J1) but not to unchannelized connections (V.35 or X.21). Use either the
IGX control terminal or a Cisco WAN Manager workstation to run the commands. For parameters and
other details on the commands, refer to the Cisco WAN Switching Command Reference.
If a port has multiple PVCs, you can optionally bundle the connections. Bundling facilitates network
meshing. You can specify connection bundling during parameter specification in the add connection
(addcon) command: if you press Return without specifying a DLCI during port specification, the
system prompts for bundling information.
Step 1 If you have not already done so, activate the applicable lines with the upln command.
Step 2 Use the dspcds command to verify that all nodes have the correct FRI back card and FRM front card.
(Use the vt command to gain access to other nodes.) The dspcds output shows the slot number of each
card and any mismatch between firmware on the front card and firmware on the back card. Note the slot
number of each FRM or UFM for subsequent commands.
Step 3 For V.35 and X.21 interfaces, check the mode (DCE or DTE) of each relevant port by using the
dspfrport command. (For T1 and E1 lines, the mode is not applicable.) On an FRI-X.25 or FRI-V.35
back card, a jumper board near each connector determines the mode of the port. See the “Port Mode
Selection for V.35 and X.21” section on page 3-41.
Note Jumper cards for selecting the mode of a V.35 or X.21 interface have an impedance of either 100
ohms or 200 ohms. At higher speeds on ports with Y-cable redundancy, the impedance is
important. With Y-cable redundancy on a higher-speed connection, use the 200-ohm jumper
card. Without Y-cable redundancy or when the port speed is low, the 100-ohm jumper card is
adequate.
Step 4 For optional Y-cable redundancy, configure the two slots for redundancy by using the addyred
command.
For V.35 and X.21 interfaces, skip the next three steps.
Step 5 For T1, E1, and J1 interfaces, bring up the line using the upln command.
Step 6 For T1, E1, and J1 interfaces, configure the line using the cnfln command.
Step 7 For T1, E1, and J1 interfaces, add the logical Frame Relay port using the addport command.