odd problem with ERS 2526-PWR

[TDN2007]

Hi all,

i have this odd problem, i have multiple sale-points connected to the same switch 1 is working and the other 2 does not when i connected these 2 directly to the core they worked!!!, but in the edge switch they did not,although the 3 sale-point have the same port configuration and work in the same vlan the only differ in IPs and mac, i did not configure any mac or ip filters, my question is there any thing can cause that?, and what should i do to recover it? (if any one face such a thing like that please help.

 

[DaddyOfThree]

Are you sure the PVID is correct on the switch ports?

Cheers!

 

[TDN2007]

yes i am, when i disconnect one of the fiber link (up link) it works, i run an smlt on my network. is there any reason for that?!!(note the server of these sales point is connect directly to one of the cores)

 

[DaddyOfThree]

This could be a classic ARP/FDB issue with your core... what version of software are you running in your core? If you dump the ARP and FDB tables from the core switches do they point to the SMLT port that connects the edge switch or do they point to the IST ports?

It could also be a MLT issue... by disconnecting one of your MLT uplinks your forcing all traffic to go through a specific port and uplink and core switch.

You'll need the MAC address of the device in question... the IP address will help to...

show vlan info fdb-entry mac 12:34:56:78:9a:bc
show ip arp info 12.34.56.78

Depending on the version of software you can "sometimes" fix the problem by causing the FDB tables to sync between the cores. You can do that by bouncing one of the IST links.

Good Luck!

 

[TDN2007]

Hi DaddyOfThree,

i have ERS-8300 SW.4.03 on the core and ERS-2500 SW.4.2 on the edge,Could you tell me how to do the bouncing of the IST link? please, thank again for your help.

best regards.