about ARP communication

Monty Ree chulmin2 at hotmail.com
Thu Mar 23 05:27:47 GMT 2006


Hello,all.

I have set the LVS using DR and kernel patched at realserver.
and I have executed like below "tcpdump -e arp"
But I have some questions about arp. 

like below, what's the meaning of the  0:0:0:0:0:0 and 0:0:0:0:0:1?
Is this a virtual MAC?

eth0 < 0:d0:b7:89:1b:68 0:0:0:0:0:1 ip 60: CLIENT.2002 > VIP.domain: F 
32:32(0) ack 324 win 17197 (DF)
eth0 > 0:0:0:0:0:0 0:d0:b7:88:eb:5c ip 54: VIP.domain > CLIENT.2002: F 
324:324(0) ack 33 win 5840 (DF)

1. like above, what's the meaning of the 0:0:0:0:0:0 and 0:0:0:0:0:1?
Is this a virtual MAC?

2. above, 
0:d0:b7:89:1b:68 is not a CLIENT or router mac but LVS Director's mac.
0:d0:b7:88:eb:5c is not a CLIENT or router mac but  RealServer's mac.

As I know, destination of the mac must be a gateway or router at the reply 
packet, right?
But like above, dst mac is realserver itself.
I can't understand..


Thanks in advance and sorry poor english.


 


3.

_________________________________________________________________
전세계인이 함께하는 웹 메일 서비스인 MSN Hotmail을 만나 보세요.    
http://loginnet.passport.com/login.srf?id=2&svc=mail&cbid=24325&msppjph=1&lc=1042 
 



More information about the lvs-users mailing list