WAN Technologies – 11 Points
3.1 Hub and Spoke
For some reason I could not get my Frame Relay hub-and-spoke network to come up. I quick look at the configuration showed the problem. This is the fourth initial configuration error:
r3 – Hub:
interface Serial0/0:0
no ip address
encapsulation frame-relay
frame-relay lmi-type ansi <- from initial configuration
interface Serial0/0:0.1 multipoint
ip address 152.1.123.3 255.255.255.0
frame-relay map ip 152.1.123.1 301 broadcast
frame-relay map ip 152.1.123.2 302 broadcastr3#sh frame lmi | i TYPE
LMI Statistics for interface Serial0/0:0 (Frame Relay DTE) LMI TYPE = ANSI
r2 – Spoke:
r2#sh run | sec Serial0/0/0
interface Serial0/0/0
no ip address
encapsulation frame-relay
interface Serial0/0/0.1 point-to-point
ip address 152.1.123.2 255.255.255.0
frame-relay interface-dlci 203r2#sh frame lmi | i TYPE
LMI Statistics for interface Serial0/0/0 (Frame Relay DTE) LMI TYPE = CISCOr1 – Spoke
r1#sh run | sec Serial0/0
interface Serial0/0
no ip address
encapsulation frame-relay IETF
frame-relay lmi-type cisco <- from initial configuration
interface Serial0/0.1 point-to-point
ip address 152.1.123.1 255.255.255.0
frame-relay interface-dlci 103r1#sh frame lmi | i TYPE
LMI Statistics for interface Serial0/0 (Frame Relay DTE) LMI TYPE = CISCO
I set the LMI type on r3 to cisco (default) as that’s what my Frame Relay switch is running.
r3(config-if)#frame lmi-type ?
cisco
ansi
q933a
Nicely played IE. 🙂
task 3.1 : lmi type missing in SG?
3.2 PPPoFR
Crap. This is another of those subjects that I am weak in. Luckilly, the IE blog had a recent post that gives a very good overview of how to configure PPPoFR:
Understanding PPP over Frame Relay (PPPoFR)
This was actually a very easy configuration as the task did not require PPP authentication.
r4(config)#int virtual-template1
r4(config-if)#ip address 152.1.45.4 255.255.255.0
r4(config-if)#int s0/0
r4(config-if)#frame interface-dlci 405 ?
ppp Use RFC1973 Encapsulation to support PPP over FR
switched Define a switched DLCI
<cr>r4(config-if)#frame interface-dlci 405 ppp ?
Virtual-Template Virtual Template interfacer4(config-if)#frame interface-dlci 405 ppp virtual-Template ?
<1-200> Virtual-Template interface numberr4(config-if)#frame interface-dlci 405 ppp virtual-Template 1 ?
<cr>r4(config-if)#frame interface-dlci 405 ppp virtual-Template 1
r4#show interface virtual-template1
Virtual-Template1 is down, line protocol is down <-expected behavior
Hardware is Virtual Template interface
Internet address is 152.1.45.4/24
MTU 1500 bytes, BW 100000 Kbit, DLY 100000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, LCP Closed, loopback not set
Keepalive set (10 sec)
DTR is pulsed for 5 seconds on reset
Last input never, output never, output hang never
Last clearing of “show interface” counters 00:14:45
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitionsr4#sh int virtual-access1
Virtual-Access1 is up, line protocol is up
Hardware is Virtual Access interface
Internet address is 152.1.45.4/24
MTU 1500 bytes, BW 100000 Kbit, DLY 100000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, LCP Open
Open: IPCP
PPPoFR vaccess, cloned from Virtual-Template1
Vaccess status 0x44
Bound to Serial0/0 DLCI 405, Cloned from Virtual-Template1, loopback not set
Keepalive set (10 sec)
DTR is pulsed for 5 seconds on reset
Last input 00:00:02, output never, output hang never
Last clearing of “show interface” counters 00:03:54
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 2000 bits/sec, 2 packets/sec
5 minute output rate 2000 bits/sec, 2 packets/sec
153 packets input, 151680 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
157 packets output, 151616 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitionsr4#p 152.1.45.5
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 152.1.45.5, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/6/8 msr4#sh ip route 152.1.45.5
Routing entry for 152.1.45.5/32
Known via “connected”, distance 0, metric 0 (connected, via interface)
Routing Descriptor Blocks:
* directly connected, via Virtual-Access2
Route metric is 0, traffic share count is 1
Do the same on r5 (different IP address and DLCI obviously) et voila!
The IE solution show that they used a point-to-point subinterface on r4 (no idea why) but not on r5 for this task. Again, no idea why?
3.3 Point-To-Point
Basic….except that I expected to be able to ping bb1 (54.1.10.254) after this step. I’ll need to wait until I do some bridging in section 4.
3.4 PPP
Basic.
3.5 PPP Authentication
Easy task because you are asked to authenticate each other using a hash (CHAP).
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