Subinterface shows down/down

[ManagerJay]

I have defined a subinterface for Serial 1 numbered Serial 1.1. Serial 1 shows up/up, but serial 1.1 shows down/down.

What do I need to do in order to bring up the sub-interface?

Thanks for your help.



Jay

 

[ManagerJay]

Here is addiitional information concerning the remote router configuration.

interface Serial1
no ip address
encapsulation frame-relay
frame-relay lmi-type asni
interface Serial1.1 point-to-point
ip address 192.168.77.20 255.255.255.0
bandwdith 56
frame-relay interface-dlci 115
router eigrp 25
network 192.168.77.0

sh frame-relay map shows
Serial1.1 (down): point-to-point dlci, dlci 115(0x73,0x1C30)
status deleted

Following is information concerning the router I am attempting to connect to.

interface Serial1
ip unnumbered Ethernet0
encapsulation frame-relay
bandwidth 448
frame-relay lmi-type ansi
frame-relay map ip 192.168.40.129 115 broadcast
frame-relay map ip 192.168.77.20 115 broadcast


The ip address of Serial0 is 192.168.10.1.

Do the serial ip addresses all need to be on the same network, or have I missed something else here?

Thanks for your help.



Jay

 

[whatup]

The ip address of the remote router has to be in the same subnet as the local router. Instead of using ip unnumbered, I would create a subinterface on the remote router as well and give it an address like 192.168.77.21/24 Since your using a point-to-point link, i would also use a 30 bit mask

 

[jeter]

Is this a point to point or a Frame-Relay?
Lets make sure of the pipe so we can resolve the issue. Jeter@LasVegas.com
Fisher CCNA,(Routing)
UOP Student BSIT

 

[Guest_imported]

According to your frame-relay map info, it says your DLCI is deleted:
sh frame-relay map shows
Serial1.1 (down): point-to-point dlci, dlci 115(0x73,0x1C30)
status deleted

Issue the "show frame-relay pvc 115" and see if the status is still deleted. If so, call your frame circuit provider and tell them the dlci is not provisioned or is mapped incorrectly.

 

[Guest_imported]

According to your frame-relay map info, it says your DLCI is deleted:
sh frame-relay map shows
Serial1.1 (down): point-to-point dlci, dlci 115(0x73,0x1C30)
status deleted

Issue the "show frame-relay pvc 115" and see if the status is still deleted. If so, call your frame circuit provider and tell them the dlci is not provisioned or is mapped incorrectly.

 

[ManagerJay]

Here is the current network configuration.

-- Router A
| DLCI 100/e0 10.129.10.1/s0 nnumbered
|
|
|
-- Router B
DLCI 115/e0 10.129.20.1/s0 192.168.77.20

This is a frame-relay network that will ultimately be configured in a star configuration (all routers connect to Router A).

The circuit is up and running correctly. If I do not use the sub interfaces and leave s0 unnumbered I am able to see the rest of the network without a problem if the frame-relay map to Router B is added in Router A.

In reading Cisco's documentation, I was under the impression point-to-point would be the proper way to setup the interface since it was connecting to only a single point. Is this incorrect?

Thanks for your help and please let me know if additional information is needed.

Thanks again.



Jay

 

[gbiello]

I've had issues when connecting from one router with a sub-interface config to another router without. Bottom-line is always use sub-interfaces so you can easily add more if the number on connections increases. I've never used the map command.

Another thing I thought of is the deleted status of the line. What is the speed of the line? If you have an integrated CSU/DSU, with a slower line, you may need a "service-module timeslots 1-6" line in the config.