frame relay circuit

Unanswered Question
May 11th, 2008

Folks,

Can I have multipoint frame relay at the hub and point to point sub interfaces at the spoke? will it work?

I have this problem too.
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Edison Ortiz Sun, 05/11/2008 - 09:18

Yes, it will work.

Hub

Rack1R1#sh run int s1/0

Building configuration...

Current configuration : 242 bytes

!

interface Serial1/0

ip address 192.168.123.1 255.255.255.0

encapsulation frame-relay

serial restart-delay 0

frame-relay map ip 192.168.123.2 102 broadcast

frame-relay map ip 192.168.123.3 103 broadcast

no frame-relay inverse-arp

Spokes:

interface Serial1/0

no ip address

encapsulation frame-relay

serial restart-delay 0

!

interface Serial1/0.123 point-to-point

ip address 192.168.123.2 255.255.255.0

frame-relay interface-dlci 201

interface Serial1/0

no ip address

encapsulation frame-relay

serial restart-delay 0

!

interface Serial1/0.123 point-to-point

ip address 192.168.123.3 255.255.255.0

frame-relay interface-dlci 301

Verification:

Pinging from spoke to spoke

Rack1R3#ping 192.168.123.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.123.2, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 56/136/308 ms

Rack1R3#

Rack1R2#ping 192.168.123.3

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.123.3, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 48/112/220 ms

Rack1R2#

Pinging from hub to spokes:

Rack1R1#ping 192.168.123.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.123.2, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 20/60/140 ms

Rack1R1#ping 192.168.123.3

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.123.3, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 12/69/180 ms

Rack1R1#

HTH,

__

Edison.

NAVIN PARWAL Sun, 05/11/2008 - 09:57

Edison,

Will this work if you had a multipoint subinterface at the hub instead of a physical interface?

mahmoodmkl Sun, 05/11/2008 - 10:49

Hi

I think it doesnt make any difference if u r going with this setup.

Thanks

Mahmood

bvsnarayana03 Sun, 05/11/2008 - 11:31

You can work the way you want, only the L2 - L3 mappings should be perfect.

Edison Ortiz Sun, 05/11/2008 - 11:39

multipoint subinterface has the same behavior as a physical main interface, the only difference is that you can have multiple multipoint subinterfaces while you can only have one physical interface.

HTH,

__

Edison.

Edison Ortiz Sun, 05/11/2008 - 11:39

multipoint subinterface has the same behavior as a physical main interface, the only difference is that you can have multiple multipoint subinterfaces while you can only have one physical interface.

HTH,

__

Edison.

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