Marcy - try doing 2 netstat arp all tcp <name of vswitch controller> commands from TCPMAINT at least 1 second apart. It will report on the MAC arp table in use. David
-------- Original Message -------- Subject: Re: Multicast use on a Linux server From: Marcy Cortes <[email protected]> Date: Tue, January 18, 2011 8:52 pm To: [email protected] Thanks Scott, Philip, and Alan, That gives me enough info. Curious though how to map the mac addr to the IP from Linux itself? They don't show up in arp -n . Would one check at the router? cdztv17142:~ # netstat -gn (-n being more needed to avoid the dummy dns names it seems to use). IPv6/IPv4 Group Memberships Interface RefCnt Group --------------- ------ --------------------- lo 6 224.0.75.75 lo 1 224.0.0.1 eth0 3 231.12.10.100 eth0 2 232.133.104.73 eth0 6 224.0.75.75 eth0 3 231.12.10.120 eth0 1 224.0.0.1 lo 1 ff02::1 eth0 1 ff02::1:ff00:1d eth0 1 ff02::1 cdztv17142:~ # ip maddress show 1: lo inet 224.0.75.75 users 6 inet 224.0.0.1 inet6 ff02::1 3: eth0 link 01:00:5e:0c:0a:64 link 01:00:5e:05:68:49 link 01:00:5e:00:4b:4b link 01:00:5e:0c:0a:78 link 01:00:5e:00:00:01 link 33:33:ff:00:00:1d link 33:33:00:00:00:01 inet 231.12.10.100 users 3 inet 232.133.104.73 users 2 inet 224.0.75.75 users 6 inet 231.12.10.120 users 3 inet 224.0.0.1 inet6 ff02::1:ff00:1d inet6 ff02::1 cdztv17142:~ # vmcp q nic details Adapter 3000.P00 Type: QDIO Name: UNASSIGNED Devices: 3 MAC: 02-00-0E-00-00-1D VSWITCH: SYSTEM TEEVSW2 RX Packets: 16796364 Discarded: 0 Errors: 0 TX Packets: 16719487 Discarded: 0 Errors: 0 RX Bytes: 3939902212 TX Bytes: 3213555193 Connection Name: HALLOLE State: Session Established Device: 3000 Unit: 000 Role: CTL-READ Device: 3001 Unit: 001 Role: CTL-WRITE Device: 3002 Unit: 002 Role: DATA vPort: 0089 Index: 0089 VLAN: 0770 Options: Ethernet Broadcast Unicast MAC Addresses: 02-00-0E-00-00-1D Multicast MAC Addresses: 01-00-5E-00-00-01 01-00-5E-00-4B-4B 01-00-5E-05-68-49 01-00-5E-0C-0A-64 01-00-5E-0C-0A-78 33-33-00-00-00-01 33-33-FF-00-00-1D Marcy ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
