Logic offers 2 kinds of Frame Relay connections: one for Internet access and one for International Frame Relay connections. Frame Relay connections for Internet access come into the Cisco 4500 router, and don't touch the IGX at all, other than connecting to the Internet over the IGX's T3 trunk, as all connections do. International Frame Relay connections are used to create private WAN connections between customers' offices here in Bermuda and their remote offices in the US or elsewhere.

To create an International Frame Relay connection, Logic creates a Frame Relay PVC onto a local loop in the Bermuda customer's office, which maps through our IGX here in Hamilton, across our off-island T3 trunk, through the IGX in New Jersey, and then out through either WorldCom or Global One. These carriers then map the circuit out to a remote local loop to the remote office, connecting to our IGX in the US via an NNI.

Frame Relay connections for Internet access are mapped by BTC to one of several T1's coming into the Cisco 4500 router. International Frame Relay connections are mapped by BTC to the T1 coming into the IGX, on Card 6, physical port 1. This will be indicated on the nocadmin.ibl.bm page by a subinterface listed for Internet Frame Relay connections, and a channel number, or DS0 number, listed for International Frame Relay connections. Be careful, since BTC will get this wrong 90% of the time, mistaking an International Frame Relay order for the more common Internet Frame Relay order. (Dwayne Minors and "Pins" are the only two people at BTC who know how to do this right).

Logic's IGX's in Hamilton and New Jersey are connected by a T3 that we lease from TeleBermuda. Across this T3, Logic has created several seperate PVCs. One is used for Internet access, which the IGX in New Jersey passes on to UUNET. Another one is used for International Frame Relay, which the IGX in New Jersey passes on to the two carriers GlobalOne or WorldCom.

When creating a new International Frame Relay connection for a customer, find out which DS0, or channel, on the IGX T1 BTC assigned the connection. This needs to be the Channelized T1 to the IGX, not the older Channelized T1 to the Cisco 7000 router. (Another common mistake BTC will make)

Then make sure the WorldCom order is complete. WorldCom should have called asking you to create the connection and put the US side into loopback, so they can test the NNI connection between them and our IGX switch in the US, and then remove the loopback.

When a channel has been mapped by BTC to a customer's local loop, a logical-port must be created on the IGX. This is defined by a number, that must be unique from other defined logical-ports. When defining a PVC across this port, a unique DLCI number must also be created. Check first to see what numbers have already been chosen.

• Look at what logical-ports have already been defined. Choose a new unique number.

• Define a new logical-port, indicating what card, physical line, & DS0 it's on.

• Configure the parameters of this port, with signalling protocol & whether 56K or 64K.

• Activate the logical port.

• Look at what DLCI's have already been defined. Make sure you choose a unique one.

• Define a PVC across this new port, indicating the card, logical-port, & DLCI.

• Configure the parameters of this PVC. You can define the PVC using a pre-defined Frame Relay Class and then modify the default parameters. More than one PVC can be defined across a port, but usually only one is ever defined.

• Look at the PVC to see if all is well. Any problems on the local line side on BER1 are local loop problems, and BTC must be called. Any problems on the NNI on USA1 are a problem with the Carrier, and WorldCom or GlobalOne must be called.

• If all is well, the customer's routers must be configured with the proper DLCI's and TCP/IP info, and they should be able to see the PVC and ping across it.

In this example, BTC has mapped the customer local loop to channel 18 of the T1 connected to Logic's Bermuda IGX. (Since we have one T1 currently, there are a total of 24 channels. Most of them are 56K, so are mapped to one channel only. Higher bandwith customers will use several channels, such as 128K using 2 channels (2x64), and 256K using 4 channels (4x64), etc.) In this example, the number 12 has been chosen for the logical-port, and the number 68 chosen for the DLCI: (The command format is listed first, with an explanation shown between the {} symbols):

dspports (Display current logical ports. Choose new unique number)

addport 6.12 1.18 { addport card.logical-port line.channel } (6 is the card, 12 is the unique logical-port you choose. 1.18 is the card's physical-line and DS0 used)

cnfport 6.12 { cnfport card.logical-port } (Configure the logical port. Set signalling protocol to Annex-D, the channel to 56K, not 64K)

upport 6.12 { upport card.port } (Activates the new logical-port)

dspfrcls (Displays pre-defined Frame Relay classes. Look at Class 5)

dspcons (Displays existing connections, listed as card.port.DLCI Choose a unique DLCI)

addcon 6.12.68 5.5.68 5 { addcon card.port.DLCI card.line.DLCI } (Adds Frame Relay PVC, in the form of card.port.DLCI on BER1 and card.line.DLCI on USA1. The 5 at the end is the default Frame Relay class for 56K. Choose a unique DLCI number, and use same number on both sides of the PVC)

dspcon 6.12.68 { dspcon card.port.DLCI } (Display default PVC parameters)

cnfcon 6.12.68 { cnfcon card.port.DLCI } (Configure PVC parameters) Enter these paramaters for the standard 56K circuit: 16/16 32/32 65535/65535 56/56 50/50 65535/65535 56/56 Y
(These are in the same order as listed in "dspcon")

dspcon 6.12.68 { dspcon card.port.DLCI } (Display the PVC paramters again. Check to make sure the Local Line on BER1 and the NNI on USA1 both say "OK". they do, then the PVC is healthy all the way through. If there is a problem on the Local Line, call BTC. If is a problem on the NNI, call the Carrier. No port configuration is necessary on the USA side. This is because the T1 connecting into the IGX in the USA is an NNI connection, so one physical port can have many PVC's just advertising it's DLCI out the T1 port.

When the Carrier calls asking to put the PVC in loopback so they can test it, make sure the PVC is already created, then add the loop with the command addloclp card.port.DLCI {addloclp 6.12.68}. When looped, the PVC will be listed with a "(" in front of it when you use the "dspcons" command. Remove the loop with dellp card.port.DLCI {dellp 6.12.68}.

The physical ports on the IGX's are used as follows:

BER1 (in Bermuda)

Card 1 - NPM Card (Network Control Module)
Card 2 - NPM Card (Redundant Network Control Module
Card 3 - UXM Card (Universal Exchange ATM Module): ** Unused **
Card 4 - UXM Card (Universal Exchange ATM Module):
Physical Port 1 - T3, Unused
Physical Port 2 - T3, Unused
Physical Port 3 - ATM T3 Trunk to USA1. All PVC's traverse this.
Card 5 - FRM Card (Frame Relay Module):
Physical Port 1 - To 2501 router "LogicBDA" to Nashville, for Tellan Gateway
Physical Port 2 - Unused
Physical Port 3 - Unused
Physical Port 4 - Wired, but unused.
Card 6 - UFM Card (Universal Frame Relay Module):
Physical Port 1 - BTC Channelized T1, for International Frame Relay
Physical Port 2 - T1 to Cisco 7000 router
Physical Port 3 - T1 to XL via Quantum
Physical Port 4 - To VoIP 2600 router "C2621BER1"
Physical Port 5 - To VoIP 2600 router "C2621BER2"
Physical Port 6 - To VoIP 2600 router "C2621BER1"
Physical Port 7 - To VoIP 2600 router "C2621BER2"
Physical Port 8 - Unused
Card 7 - NTM Card (Network T1 Module):
Physical Port 1 - Backup satellite T1 trunk to USA1 via TBI and MCI
Card 8 - UXM Card (Universal Exchange ATM Card):
Physical Port 1 - T3, Unused
Physical Port 2 - T3, Unused
Physical Port 3 - ATM connection to Cisco 7000 router

USA1 (in Whippany, New Jersey)

Card 1 - NPM Card (Network Control Module)
Card 2 - NPM Card (Redundant Network Control Module)
Card 3 - UXM Card (Universal Exchange ATM Card): ** In Standby Mode **
Card 4 - UXM Card (Universal Exchange ATM Card):
Physical Port 1 - T3, Unused
Physical Port 2 - T3, Unused
Physical Port 3 - ATM T3 Trunk to BER1. All PVC's traverse this.
Card 5 - UFM Card (Universal Frame Relay Module):
Physical Port 1 - GlobalOne T1, for International Frame Relay
Physical Port 2 -
Physical Port 3 -
Physical Port 4 - UUNET T1, for Internet access
Physical Port 5 - WorldCom T1, for International Frame Relay
Physical Port 6 -
Physical Port 7 -
Physical Port 8 -
Card 6 - UFM Card (Universal Frame Relay Card):
Physical Port 1 -
Physical Port 2 -
Physical Port 3 -
Physical Port 4 -
Physical Port 5 -
Physical Port 6 -
Physical Port 7 -
Physical Port 8 -
Card 7 - NTM Card (Network T1 Module):
Physical Port 1 - Backup satellite T1 trunk to BER1 via TBI and MCI
Card 8 - UXM Card (Universal Exchange ATM Card):
Physical Port 1 - T3, Unused
Physical Port 2 - T3, Unused
Physical Port 3 - ATM T3 NNI to UUNET, for Internet access

Changing a DLCI in an ACT FRAD:

- Hit Return 3 times fast, then enter 2020 for the password. (All ACTs accept this password)
- SE (System Configuration)

• From the list of choices, type PVC
• Select PVC 1, assuming only one PVC needs to be changed
• Accept the default when it prompts for "Mode"
• When prompted for the DLCI, type the new DLCI number
• Accept all of the remaining defaults, until you're back at a blank prompt
• RU (Reset Unit. Reloading is not always necessary, but is for good luck)

• Select PVC from the options, to see if the new DLCI took hold. The new number should be there.

-- All configuration changes are saved as soon as they're entered. No saving is required.

Changing a DLCI on a Cisco Router

router> enable (Enters priveleged Enable mode)
router# config t (Enters configuration mode)
router(config)# int serial 0.1 (Specifies the relevant sub-interface)
router(config)# no frame-relay interface-dlci {old DLCI number} (Deletes the old DLCI)
router(config)# frame-relay interface-dlci {new DLCI number} (Enters the new DLCI)
router(config)# shut (Shuts down the sub-interface)
router(config)# no shut (Turns the sub-interface back on, to look for the new PVC)
router(config)# Ctrl-z (Hold down the Ctrl and "z" keys, to escape configuration mode)
router# write memory (Saves the changes)
router# sho frame pvc (Checks to see if the new PVC status is "Active")
router# sho frame lmi (Checks for LMI signal. The numbers after "Num Status Enq. Sent" and "Num Status msgs Rcvd" should be the same. If not, no signal.)