Radware Alteon Application Manual page 86

Alteon Application Switch Operating System Application Guide
VLANs
The route cache table records each session request by mapping the destination IP address with the
MAC address of the default gateway. The command
the route cache similar to Table 9. The destination IP addresses (see the last two rows of the table)
are associated with the MAC addresses of the gateways.
Destination IP
address
10.10.1.1
10.10.1.20
10.10.1.30
10.10.4.1
10.10.4.40
172.21.2.27
172.21.2.200
172.21.3.14
172.21.2.200
192.168.20.200
200.1.2.200
Traffic from VLAN 2 uses Gateway 5 to access destination IP address 192.168.20.200. If traffic from
VLAN 3 requests the same destination address, then traffic is routed via Gateway 5 instead of
Gateway 6, because 192.168.20.200 in the route cache is mapped to Gateway 5. If the requested
route is not in the route cache, then Alteon reads the routing table. If the requested route is not in
the routing table, then Alteon looks at the configured default Gateway.
Example VLAN-Based Gateway
VLAN-based gateways do not apply to client-based traffic. Rather, defining a VLAN-based gateway
configures Alteon to use a predetermined gateway for the real server response.
The following configuration has three VLANs:
VLAN Name
---- -------------------------
1 Default VLAN
2 VLAN 2
3 VLAN 3
The real servers reside on VLAN 1. By specifying a VLAN-based gateway, Alteon controls which
external link these real servers will use to respond to client requests. The external link used is not
dependent on whether the client traffic was sourced from VLAN 2 or VLAN 3.
86
Table 9: Route Cache Table in the Example
Flags MAC Address
P 00:60:cf:46:48:60
00:60:cf:44:cd:a0
00:60:cf:42:3b:40
00:60:cf:42:77:e0
P 00:60:cf:46:48:60
00:50:da:17:c8:05
P 00:60:cf:46:48:60
00:c0:4f:09:3e:56
P 00:60:cf:46:48:60
R 00:60:cf:44:cd:a0
R 00:60:cf:42:3b:40
Status
------
ena
ena
ena
/info/l3/arp/dump
VLAN Port
4
4 25 (Gig) ENA
4 26 (Gig) ENA
1 27 (Gig) DIS
1
2 7
2
3 8
3
4 1
4 2
BWC Learn Ports
--- ------------
256 1 3 5 7-23 25-28
256 2 4
256 6 24
Document ID: RDWR-ALOS-V2900_AG1302
displays the entries in
Shared Referenced
SPs
ENA 1-4
empty
empty
empty
DIS 1-4
DIS 1
DIS 1-4
DIS 2
DIS 1-4
DIS 7
DIS 8