Setting up a lab for frame relay?

Jason · Guest

I'm trying to understand frame relay but finding some of the examples
hard to replicate in my home lab. None of the examples in any of my
boooks (CCNA ICND2 by Wendell Odom / CCNA command quick reference or on
the CBT nuggets CD) explain how to set frame relay up in a lab.

I found a document on Cisco's site called Back-to-Back Frame Relay
Hybrid Switching which gives the router config command 'frame-relay
switching' to turn on frame relay switching, but no other commands in
order to set up virtual DLCIs. I have succesfully created a frame relay
link between two of my routers (see below screen dump) but the only way
it works is with both point-to-point sub-interfaces using the same DLCI
number, which is contrary to how all the examples in my book work.

Maybe I'm missing something or maybe I'm trying to create too complex an
environment for a basic lab, but it is frustrating none the less. Any
ideas?

TIA, Jase.

GROUCHO#show run int s0/0.100
Building configuration...

Current configuration : 122 bytes
!
interface Serial0/0.100 point-to-point
ip address 192.168.10.1 255.255.255.252
frame-relay interface-dlci 101
end

GROUCHO#

CHICO#show run int s0.1
Building configuration...

Current configuration:
!
interface Serial0.1 point-to-point
ip address 192.168.10.2 255.255.255.252
no ip directed-broadcast
frame-relay interface-dlci 101
end

CHICO#p 192.168.10.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.10.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/39/52 ms
CHICO#show fram
CHICO#show frame-relay map
Serial0 (up): ip 192.168.2.2 dlci 122(0x7A,0x1CA0), static,
broadcast,
CISCO, status defined, active
Serial0.2 (up): point-to-point dlci, dlci 112(0x70,0x1C00), broadcast
status defined, active
Serial0.1 (up): point-to-point dlci, dlci 101(0x65,0x1850), broadcast
status defined, active
CHICO#

Show version commands of both routers used:

CHICO#show version
Cisco Internetwork Operating System Software
IOS (tm) 2500 Software (C2500-D-L), Version 12.0(11), RELEASE SOFTWARE
(fc1)
Copyright (c) 1986-2000 by cisco Systems, Inc.
Compiled Sat 20-May-00 06:39 by htseng
Image text-base: 0x030388AC, data-base: 0x00001000

ROM: System Bootstrap, Version 11.0(10c), SOFTWARE
BOOTFLASH: 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0(10c),
RELEASE SOFTWARE (fc1)

CHICO uptime is 2 hours, 48 minutes
System restarted by power-on
System image file is "flash:c2500-d-l_120-11.bin"

cisco 2500 (68030) processor (revision L) with 6144K/2048K bytes of
memory.
Processor board ID 06110204, with hardware revision 00000000
Bridging software.
X.25 software, Version 3.0.0.
Basic Rate ISDN software, Version 1.1.
1 Token Ring/IEEE 802.5 interface(s)
2 Serial network interface(s)
1 ISDN Basic Rate interface(s)
32K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash (Read ONLY)

Configuration register is 0x2102

GROUCHO#show version
Cisco Internetwork Operating System Software
IOS (tm) C2600 Software (C2600-I-M), Version 12.2(27), RELEASE SOFTWARE
(fc3)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Tue 02-Nov-04 23:44 by kellmill
Image text-base: 0x8000808C, data-base: 0x80A1F47C

ROM: System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)

GROUCHO uptime is 2 hours, 47 minutes
System returned to ROM by power-on
System image file is "flash:c2600-i-mz.122-27.bin"

cisco 2611 (MPC860) processor (revision 0x203) with 61440K/4096K bytes
of memory.
Processor board ID JAD04420E7O (4253923018)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
2 Ethernet/IEEE 802.3 interface(s)
1 Serial network interface(s)
32K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102