cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
611
Views
0
Helpful
4
Replies

ARP issue

bijay.swain
Level 1
Level 1

Hi 

When I ping to one of the H3C comware switch in our network I don't get any reply .

all switches and my hosts are in default vlan .

I tried to debug on the destination H3c Comware switch to which I am pinging . I found below details which might be the reson I am not getting any reply from the switch.

*Aug 22 19:53:59:690 2017 PM-DC ARP/7/arp_send: Send an ARP Packet, operation : 1, sender_eth_addr : 3822-d626-c9d7,sender_ip_addr : 10.147.24.80, target_eth_addr : 0000-0000-0000, target_ip_addr : 10.147.24.254

*Aug 22 19:53:59:691 2017 PM-DC ETH/7/eth_info:

 Output L3 ethernet packet!

*Aug 22 19:53:59:691 2017 PM-DC ETH/7/eth_info:

  ETHL3EncapHead need encap l2 head

*Aug 22 19:53:59:692 2017 PM-DC ETH/7/eth_send: Send an eth packet, interface: Vlan-interface1, format: 0, prototype: 0806, src_addr : 3822-d626-c9d7, dst_addr : ffff-ffff-ffff

*Aug 22 19:53:59:692 2017 PM-DC ETH/7/eth_info:

Eth L3 Output packet head is :

  ff ff ff ff ff ff 38 22 d6 26 c9 d7

  08 06 00 01 08 00 06 04 00 01

*Aug 22 19:53:59:693 2017 PM-DC RXTX/7/pkt: 

From board 0: transmit packet from chip0,vlan1,Priority=0x7,len=46

*Aug 22 19:53:59:693 2017 PM-DC RXTX/7/pkt:

 -----------------------------------------------------

 -----------------------------------------------------

 

*Aug 22 19:53:59:694 2017 PM-DC ETH/7/eth_info:

  ETHL3EncapHead resolve Arp error!

*Aug 22 19:53:59:694 2017 PM-DC ETH/7/eth_info:

  ETHL3EtherOutput resolve Arp failed in encapheading!

*Aug 22 19:53:59:695 2017 PM-DC IPTRAP/7/debug_icmp:

SOCK RAW OUTPUT OK:

 

 

But some other devices are able to ping the switch .  what could be the issue 

4 Replies 4

Reza Sharifi
Hall of Fame
Hall of Fame

Hi,

Check the route table.  Do you have a route to this ip address (10.147.24.254)?

HTH

it is in same VLAN . that is in vlan1

Hi,

Can you post the config from the switch you can't ping?

If I disable and enable any port in vlan 1 in the switch I get ping response for few hours and then again same issue starts.

 

 

Review Cisco Networking for a $25 gift card