Cisco WS-C6506 Software Manual page 1361

Chapter 54 Configuring ASLB
Figure 54-2
Clients
Table 54-2 Client-to-Server ASLB Packet Flow
Path
Number VLAN
1 10
2 20
3—N 10
N + 1 10
N + 2... 20
1. This MAC address has an Xtag value of 14 in the Layer 2 table for this packet's VLAN.
2. VIP = virtual-IP address.
3. CIP = client's IP address.
4. The MAC address of the server that the LocalDirector selected.
Table 54-3 Client-to-Server ASLB Layer 3 Table Entries
IP Destination IP Source
Address Address
1 2
VIP CIP
1. VIP = virtual-IP address.
2. CIP = client's IP address.
3. MAC address of the server that the LocalDirector selected.
OL-8978-04
Client-to-Server ASLB Packet Flow
VLAN 10
VLAN 20
MAC
Destination MAC Source
Address Address
LocalDirector Router MAC
1
MAC
4
Server MAC Router MAC
LocalDirector Router MAC
1
MAC
LocalDirector Router MAC
1
MAC
Server MAC Router MAC
Protocol
TCP
Catalyst 6500
series switches
P
K
Path 3
P
P
R
L
P
P P
M
A
B
Path 1
Path 2
LocalDirector
IP Destination IP Source
Address Address
2
VIP CIP
1
VIP CIP
VIP CIP
VIP CIP
1
VIP CIP
Ports VLAN
80/YZ 20
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
Understanding How ASLB Works
Server pool
S1
S2
S3
Flags Action
3
SYN Candidate entry in
Layer 3 table
- Enabler frame
- Full ASLB MLS
entry created
FIN/RST Path 1 redirect
FIN/RST Path 2
MAC Destination
Address
3
Server MAC
MAC Source
Address
Router MAC
54-5