Cannot ping
Created: May 7, 2020 18:03:30Latest reply: May 11, 2020 20:29:19
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Sapte
Created May 11, 2020 20:31:31
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Configuration is wrong.....vlan terminated layer 3 interface and trunk configured layer2 interface how can work together on layer 2 domain if there is a broadcast packet ? Please delete your answer to not redirect people in wrong way...and please check my solution
Popeye_Wang
Reply Sapte Created May 12, 2020 06:43:28
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I also made an experiment on eNSP. The Layer 3 sub-interface of the CE should broadcast ARP packets by default. However, the wireshark shows that the packets are discarded after reaching CE3. Use the same configuration to replace CE3 with a router. (add the arp broadcast enable command), the problem does not occur. Alternatively, replace Eth-Trunk2 between CE2 and CE3 with a physical interface, it's work fine too. So I said there is no problem with the configuration. May just cause by eNSP..... 
Waleed.Farouk
Reply Sapte Created May 19, 2020 20:30:40
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@Sapte ,,,I am right ,,,,please review again the solution ,,it is a concept to make L3 sub-interfaces ,,please you need to review your concept again
Waleed.Farouk
Reply Popeye_Wang Created May 19, 2020 20:33:41
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@popeye ,,Right ,,I I did before with the router and I added the command arp broadcast enable because by default the router prevent the broadcast under the subinterface and worked and my question why it is worked with the router and it doesnt work with the switch and it is the same concept
Waleed.Farouk
Reply Popeye_Wang Created May 19, 2020 20:47:21
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I would like to add point ,,the command arp broadcast enable doesnt available in the sub-interface trunk in the switch although it is available in the sub-interface eth-trunk in the router |
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Waleed.Farouk
Created May 8, 2020 14:31:44
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From CE3 , I can ping 172.16.1.100, 172.16.2.100. 172.16.1.101 , 172.16.2.101 But from the router i can not ping them I can ping from the router 172.16.1.1 , 172.16.2.1 I think the problem in the CE3 can not route the traffic but why ?
niuhai211
Reply Waleed.Farouk Created May 9, 2020 08:37:45
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display arp table on ce3 and paste here. use wireshark capture packet on link ce3 to r and ce3 to ce2. |
Waleed.Farouk
Reply niuhai211 Created May 9, 2020 09:13:11
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[~CE3]dis arp ARP Entry Types: D - Dynamic, S - Static, I - Interface, O - OpenFlow EXP: Expire-time IP ADDRESS MAC ADDRESS EXP(M) TYPE/VLAN INTERFACE VPN-INSTANCE ------------------------------------------------------------------------------ 172.16.1.1 707b-e88d-21ca I Vlanif10 172.16.1.100 707b-e89c-0b43 7 D/10 Eth-Trunk2 172.16.1.101 707b-e888-4e1f 6 D/10 Eth-Trunk2 172.16.2.1 707b-e88d-21ca
niuhai211
Reply Waleed.Farouk Created May 10, 2020 00:21:31
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there is no problem with arp table, paste routing table and fib table here again. |
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