From: Mike Williams (ccie2be@swbell.net)
Date: Sat Jun 21 2003 - 23:47:27 GMT-3
Wei,
Silly question: Do you have 'encapsulation frame-relay' on Serial2/0?
I don't see that in your configs below. You are correct that on your R2
that on R2 the DLCIs are assigned to the physical interface, so there is
no need for a 'frame-relay interface-dlci' command. You are also
correct that you don't need a mapping but that is because of
inverse-arp, so be careful with that. Personally, I would map all IP
addresses to their respective DLCI. The rules out ANY chance of you
getting messed up by inverse-arp. I went to the lab and I configured
two routers exactly as you have and it works fine for me. See following
output (I used R2 and R4 instead of R1 and R2, but it's the same
thing):
------------------------------------------------
R2#sh run
interface Serial1
no ip address
encapsulation frame-relay
!
interface Serial1.1 point-to-point
ip address 192.168.1.5 255.255.255.252
frame-relay interface-dlci 104
R2#sh frame map
Serial1.1 (up): point-to-point dlci, dlci 104(0x68,0x1880), broadcast
status defined, active
R2#ping 192.168.1.6
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.6, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/8/8 ms
R2#
------------------------------------------------
R4#sh run
interface Serial0/0
ip address 192.168.1.6 255.255.255.252
encapsulation frame-relay
R4#sh frame map
Serial0/0 (up): ip 192.168.1.5 dlci 401(0x191,0x6410), dynamic,
broadcast,, status defined, active
R4#ping 192.168.1.5
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.5, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/5/8 ms
R4#
------------------------------------------------
I can't explain why you're getting that 0.0.0.0 in your 'frame map', but
something's not right. It should work for you as shown.
HTH,
Mike W.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Wei Zou (wzou)
Sent: Saturday, June 21, 2003 7:53 PM
To: ccielab@groupstudy.com
Subject: Frame Relay question
Hi:
I have following topology:
Router1(r1) ---DLCI(130)-----FR switch ----DLCI( 131) ---- Router 2(r2)
r1#sh run
interface Serial2/0.2 point-to-point
ip address 192.168.1.5 255.255.255.252
frame-relay interface-dlci 130
end
r2#sh run int s2/0
interface Serial2/0
ip address 192.168.1.6 255.255.255.252
encapsulation frame-relay
end
Why show frame map will show 0.0.0.0 entry for r2 and I can not ping
192.168.1.5(r1 s2/0) from r2(I know I don't have entry to there, but
why?I
believe the PVC is automatically assigned to physical interfaces, I
don't
need interface-dlci or map statement).
r2#sh frame map
Serial2/0 (up): ip 0.0.0.0 dlci 131(0x83,0x2030)
broadcast,
CISCO, status defined, active
why 0.0.0.0 entry is shown for physical interface side whenever I have
physical interface connected to Multipoint or Point-to-Point
subinterfaces.
But it will not happen between Multipoint to Multipoint/PtP or PtP to
PtP
subinterfaces.?
Thanks
Wei
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