Frame-Relay: LMI DLCI status means what ?

polm

What does the DLCI status tell me about a frame relay PVC, and where the responsibilty for acheiving that status comes from ?

For example; In a simple point-to-point scenario, ff a DLCI is advertised as "Inactive", which of the 4 components is most likely to be the problem: local router, local switch, remote router, remote switch ?

Is there a logical way to determine the possible reasons for DLCI status to be either active, inactive, or deleted ?

knownasthatguy

you have to remeber that the DLCI only has local significance. if the DLCI says inactive, then its between the dte and dce. do a sh frame pvc on the router and if you are using a cisco as a frame switch, do a sh frame route, that will display all the DLCI connections. send me your running configs and i can take a looksy, i just did a HUGE fr lab with 5 ciscos and two ciscos as a fr switch and a token ring on the cisco router acting as a switch. the configurations and tsing is quite cumbersome if you dont have your administrative ducks in a row.

hollar back and keep me posted on your progress

keenon

its used to id yourself(router) to the local frame switch and the host your connecting to.. in majority its used when u have a host site that is a multi-point end for remote sites to connect to. the lmi is the link mangement, there are a few diff ones that are used mainly ANSI and CISCO is what u mostly will see. also remember when using frame relay there are 2 types, CISCO and IETF( which means u connecting to a non Cisco equipment) hope this helps and not confuse u any more than it can be

concerning the pvc when using a dlci it makes it permanent, if memory serves me.. when information needs to be transmitted it would create a temp circuit connection for the transmit and close it after finishing(SVC)

medic

From Cisco Networking Academy Program CCNA 3 and 4 Companion Guide 3rd Edition pg 563:

Three possible connection states appear in the Frame Relay map table:

Active state - Indicates that the connection is active and that routers can exchange data.

Inactive state - Indicates that the local connection to Frame Relay switch is working, but the remote router's connection to Frame Relay switch is not working.

Deleted state - Indicates that no LMI is being received from the Frame Relay switch or that no service between the CPE router and Frame Relay switch is occurring.

rossonieri#1

dlci is your router connection id inside providers frs -> it tells the frs on which port your connection in and out. the status could tell u anything from your misconfig router - or the frs misconfig. sometimes your config is correct but the frs config is wrong, vice versa.