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AR4640A Telnet logon is abnormal.

Publication Date:  2012-07-27 Views:  236 Downloads:  0
Issue Description
Sometimes, AR4640A cannot telnet, sometimes it can.
Networking:AR4640A----CISCO layer 2 Lan Switch-----AR4640B

Alarm Information

Handling Process

1. On AR4640B, it is normal to communicate with the direct address of AR4640 and no packets are discarded.
2. check arp table via display arp and detect the MAC address corresponding to the IP,obviously, it not the MAC addresses of Huawei’s. Ask the users to check which interface this address is from.
After check, we can know this is due to IP addresses conflict, all is normal after amending.


Root Cause
1. Sometimes, AR4640A router can telnet, which means the configuration is out of problem, and no limitation is involved over telnet on links.
2. It is communicated as doing ping for AR4640 interface address, which means the links are out of problems.
3. Because there is layer 2 LanSwitch between AR4640A and AR4640Bd, and this LanSwitch connects with other layer 3 device too, which means the IP address maybe conflicts.