Junos OS

Hello everyone,

 

I have IPoE which is in production. I am frequently getting the error mentioned below and I suspect because of this error, subscribers are not being able to get connected. The subscriber who connects doesnt have such error. This error is taken from jdhcpd log.

 

I would be thankful if anyone explains why is this error getting hit and what are the fix.

 

Jul 3 10:59:48.408019 [MSTR][DEBUG] [default:default][SVR][INET][demux0.3221233394][SID=0] jdhcpd_profile_get: No snapshot handle to recover SDB profile name

Jul 3 10:59:48.408031 [MSTR][INFO] [default:default][SVR][INET][demux0.3221233394][SID=0] jdhcpd_profile_get: Profile_get using regular profile wlink_hs_1

Jul 3 10:59:48.408048 [MSTR][DEBUG][default:default][SVR][INET][demux0.3221233394][SID=0] jdhcpd_dual_stack_get_client_from_key: checking for dual-stack peer flags3(8000), ifl ()

Jul 3 10:59:48.408073 [MSTR][INFO] [default:default][SVR][INET][demux0.3221233394][SID=0] jdhcpd_dual_stack_accept_client: dual stack failure - client already on interface.

Jul 3 10:59:48.408099 [MSTR][INFO] [default:default][SVR][INET][demux0.3221233394][SID=0] jdhcpd_local_server_state_init: Dropping client due to dual stack check failure.

Jul 3 10:59:48.408124 [MSTR][WARN] [default:default][SVR][INET][demux0.3221233394][SID=0] safd_num_clients_bound_dec: NOK:decrementing safd(0x2954e80) bound clients counter for client (0x37d8000)

It is failing at

jdhcpd_dual_stack_accept_client: dual stack failure - client already on interface

please check the configuration

thank you
Prabin

Yes, i am aware of it. But I am in confusion why few subscribers are getting such errors and other few have no issue connecting.

 

check dual-stack config too and it is as per juniper suggested. Had there any issue, no other subscribers would connect.

Hi Kijush,

 

Did you tried delete-binding-on-renegotiation knob in your setup? Will it make any difference?

 

Regards,
Rahul

set system services dhcp-local-server dhcpv6 group IPv6 overrides delete-binding-on-renegotiation set system services dhcp-local-server group IPv4 overrides delete-binding-on-renegotiation it was configured yesterday but it didn't help.

Hi Kijush,

 

Did you tried to explore below knob?

 

https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/client-discover-match-edit-system-services.html

 

 

Yes. Rahul. This knob have been already enabled.

 

set system services dhcp-local-server overrides client-discover-match incoming-interface

Issue was resolved after activating classification-key. It was unknowingly deactivated during previous troubleshoots.