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shuweizh avatar image
shuweizh asked mnakamura answered

can we create RA message for SLAAC in ipv6?

Hi,as we know, in ipv6, SLAAC means host gets prefix information in RA to configure its own ipv6 address, but otherthan connecting to a real router in uplink, can we manually create a downstream RA message, and set a ipv6 autoconfiguration device in userport to retreive this RA? It seems this does not work, the device is not bound, anyone confirm?
Spirent TestCenter (STC)IPv6
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ksukesh avatar image
ksukesh answered
Hi, It wont respond. We can manually send the RA message but automatically it wont respond when it gets RS from DUT. Regards, Sukesh
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ksukesh answered
Attached configuration and capture might help.[link text][1] [1]: /storage/temp/4369-ipv6_autocnfig.zip

ipv6_autocnfig.zip (78.7 KiB)
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shuweizh answered
Thx, Ksukesh, but in attached file, it seems you have only one device, i think it is connected to a Cisco router. But actually what i wanna ask is if we can manually create a RA message(instead of using a real router) and a device configured with SLAAC. But thx anyway
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ksukesh answered
Hi, Sorry did not get your query properly. Please check attached config file. Regards, Sukesh
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shuweizh answered
hi, Sukesh, I saw your config file, but it has only one port, right? I guess you directly connect STC to a Cisco router, then you only need to creat a SLAAC device, the router will send out the RA msg..... But what i really mean is instead of using a real router, if we have two ports(STC), can we create a RA msg maually(add raw stream) in one port and a SLAAC device in another port, and SLAAC can be done all right?? Is this possioble??? Cheers
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ksukesh answered
Hi, We can emulate only client side of SLAAC using Spirent TestCenter emulated device, we can not emulate Server side- it should be DUT. But we can create raw streamblocks to send RA and RS messages on ports and use command sequencer to send those. Let me know if this solution is feasible for you so that I can provide the configuration file for the same. Regards, Sukesh
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shuweizh answered
can we simulate DUT (a Cisco Router in your setup) by creating a raw RA msg manually ? I tried but it's not working (I am testing an Alcatel Lucent ISAM platform between two test center ports). I mean, sending a manually configured DS RA to a SLAAC client, does client will respond to this RA?? In a word, simulating router by sending a RA
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mnakamura answered
Attached is a config file with two ports. The first port has an IPv6 device setup for IPv6 autoconfiguration. The 2nd port does not have an IPv6 device but a raw stream block to simulate the Router Advertisement. Start the IPv6 autoconfiguration on the first port, then start traffic on the 2nd port. The device will get bound and you will see the IPv6 address has been populated. Regards, Mike [link text][1] [1]: /storage/temp/4752-ipv6_autoconfiguration_rawstream.zip

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