CLI Procedure for IP Forward Filter
Select either port filtering or system filtering, depending upon your selection criteria.
CLI> add filters ip forward port outgoing
| Parameter | Range of Values | Required Actions |
|---|
| <IfIndex> | INTEGER (1..255) | Enter the IfIndex of the port you are adding the filter to. |
| <FilterMask> | IPAddress | Enter the IP address of the filter mask. |
| <FilterAddress> | IPAddress | Enter the IP address of the filter address. |
| <ProtocolType> | INTEGER (1.255) | Enter the INTEGER(s) that represent the correct protocol type for this Passport 4400. |
| <PortId> | INTEGER (1..65535) | Enter the INTEGER(s) that represent the Port ID. |
| <Direction> | source | destination | Enter the directional type, source or destination. |
| <Action> | forward | discard | This command determines the nature of the filter.The filter's Action determines the nature of the filter. Discard blocks transmissions as specified in the filter masks and addresses. Forward seeks out information with the specified masks and addresses, and then passes (forwards) the information to its destination, blocking all other information. |
Example:
The following example uses a TCP protocol type (06) and a port ID, the TCP/UDP port number, of a Telnet connection (23):
CLI> add filters ip forward port outgoing 2 255.255.255.0 192.168.206 06 2 destination forward
With the configuration illustrated in the figure on the next page, the IP packet, tagged with priority High, is sent down to the Virtual Port Management (VPM) module. The VPM looks up its SVC table and chooses SVC1 to transfer the packet as that SVC has the highest priority.
The VPM has to be able to handle the times when the number of SVCs available is less than the number of IP priorities configured. For example, if for some reason SVC2 goes down, there are three other scenarios that can be used to transfer the packets from the master to the slave side.
- VPM transfers the IP packet over SVC1 as if all three SVCs are functioning. This is possible because SVC1 has the highest TP.
- VPM transfers the IP packets with medium TP over SVC3. SVC3 becomes the SVC that is up and the second highest TP.
- If a user sends a data packet with a low priority, and there is no SVC up with a TP of 3 to the requested destination, VPM transfers the IP packets over SVC3 because it is the next highest TP.
You can also determine filters for the system:
CLI> add filters ip forward system
| Parameter | Range of Values | Required Actions |
|---|
| <DestMask> | IPAddress | Enter the IP address of the destination filter mask. |
| <DestAddress> | IPAddress | Enter the IP address of the destination IP filter address. |
| <SrcMask> | IPAddress | Enter the IP address of the source filter mask. |
| <ProtocolType> | INTEGER (1..255) | Enter the INTEGER(s) that represent the correct protocol type for this Passport 4400. |
| <PortId> | INTEGER (1..65535) | Enter the INTEGER(s) that represent the Port ID. |
| <Action> | forward | discard | This command determines the nature of the filter.The filter's Action determines the nature of the filter. Discard blocks transmissions as specified in the filter masks and addresses. Forward seeks out information with the specified masks and address, and then passes (forwards) the information to its destination, blocking all other information. |
For system filtering, both the destination and source must be specified.
End of Procedure
End of Topic
CLI Procedure for Creating SVCs
Configuring SVCs and SPVC Priorities
