RE: [Veritas-bu] Very ODD problem with NB5.1MP3a + 2 Solaris Clients

[Paul Keating]

Title: Message

Ummm....are any of your systems multi homed?   looks like an asymmetrical routing issue we had here recently.   backup server talks to client on NIC A, but client replies back to server from NIC B via an alternate path.   the ARP table on your switch that the backup server and NIC A are connected to doesn't get populated with the MAC of the client NIC A untill the client ARPs or tries to talk to via NIC A....then communication works for 5-10 minutes or untill your ARP cache refreshes, then communication is broken till the client tries to talk to the server again.   I'm thinking it's likely not an issue if your clients all are single NIC or connected to a single switch along with the backup server.   check with your network guys to see if they're seeing any broadcasting on the switches your backup server and clients are attached to.   Paul -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Piszcz, Justin Sent: November 8, 2005 11:59 AM To: Piszcz, Justin; Patrick Whelan Cc: veritas-bu@mailman.eng.auburn.edu Subject: RE: [Veritas-bu] Very ODD problem with NB5.1MP3a + 2 Solaris Clients Name resolution is setup through /etc/hosts on the backup server, no external DNS servers are used. The subnet is the same yes. The bp.conf is the same for the most part, the error occurs on both systems.   MASTER -> CLIENTS: [EMAIL PROTECTED] telnet 172.16.0.135 bpcd Trying 172.16.0.135... ^C [EMAIL PROTECTED] telnet 172.16.0.136 bpcd Trying 172.16.0.136...   HANGs and HANGs..—How would I debug this problem?   CLIENTS -> MASTER box1# telnet backup01 bpcd Trying 172.16.0.2... Connected to backup01. Escape character is '^]'.   box2# telnet backup01 bpcd Trying 172.16.0.2... Connected to backup01. Escape character is '^]'.   Now the EXTREMELY WEIRD PART!!! (now I can MASTER->CLIENTS) – NO ISSUE [EMAIL PROTECTED] telnet 172.16.0.135 bpcd Trying 172.16.0.135... Connected to 172.16.0.135. Escape character is '^]'. ^] telnet> Connection to 172.16.0.135 closed. [EMAIL PROTECTED] telnet 172.16.0.136 bpcd Trying 172.16.0.136... Connected to 172.16.0.136. Escape character is '^]'.   Any freaking clue what is going on here?