Port Mapping
Page 19-68
Who Can Talk to Whom?
The following matrix outlines which ports can communicate with each other in the example
shown on the previous page
assuming all ports are part of the same group or VLAN
. A port
can only communicate with ports in the opposite subset within the port mapping set.
Port communication is uni-directional. A mapping between an ingress port and an egress port
can only pass data from the ingress port to the egress port. To allow traffic to flow the from
the egress port to the ingress port, it is necessary to create a new mapping.
It’s important to remember that the port mapping configuration is affected by existing
group/VLAN rules. If the ports in the above example belonged to three groups based on IP
network rules, then they would be restricted by group membership and port mapping.
Port mappings can be created between switch ports and uplink ports, but not between uplink
ports. For example, you could map ethernet ports 3/1-12 to an WAN uplink port 4/1. This is
useful when there is no traffic between ethernet ports, but all ports are to be forced to the
uplink module. You
cannot
, however, map uplink port 4/1 to uplink port 4/2.
Port Mapping Limitations
The following are restrictions to the use of the port mapping feature:
• Port mapping cannot be used with ports assigned to an 802.1Q group.
• Port mapping cannot be used with an OmniChannel unless all ports in the OmniChannel
are included in the port mapping (on either the ingress or egress list). For example, if ports
3/1-3/4 are an OmniChannel, all four ports must be in the ingress or egress list. You could
not just map port 3/1.
Switch Ports That May Communicate*
2/1
2/4
2/5
3/1
3/4
3/5
4/1
4/4
4/5
2/1
N/A
Yes
Yes
No
Yes
Yes
No
Yes
Yes
2/4
No
N/A
No
No
No
No
No
No
No
2/5
No
No
N/A
No
No
No
Yes
No
No
3/1
No
Yes
Yes
N/A
Yes
Yes
No
Yes
Yes
3/4
No
No
No
No
N/A
No
No
No
No
3/5
No
No
No
No
No
N/A
No
No
No
4/1
No
Yes
Yes
No
Yes
Yes
N/A
Yes
Yes
4/4
Yes
No
No
Yes
No
No
Yes
N/A
No
4/5
Yes
No
No
Yes
No
No
Yes
No
N/A
*Read table from right (ingress ports) to left only.
Summary of Contents for Omni Switch/Router
Page 1: ...Part No 060166 10 Rev C March 2005 Omni Switch Router User Manual Release 4 5 www alcatel com ...
Page 4: ...page iv ...
Page 110: ...WAN Modules Page 3 40 ...
Page 156: ...UI Table Filtering Using Search and Filter Commands Page 4 46 ...
Page 164: ...Using ZMODEM Page 5 8 ...
Page 186: ...Displaying and Setting the Swap State Page 6 22 ...
Page 202: ...Creating a New File System Page 7 16 ...
Page 270: ...Displaying Secure Access Entries in the MPM Log Page 10 14 ...
Page 430: ...OmniChannel Page 15 16 ...
Page 496: ...Configuring Source Route to Transparent Bridging Page 17 48 ...
Page 542: ...Dissimilar LAN Switching Capabilities Page 18 46 ...
Page 646: ...Application Example DHCP Policies Page 20 30 ...
Page 660: ...GMAP Page 21 14 ...
Page 710: ...Viewing the Virtual Interface of Multicast VLANs Page 23 16 ...
Page 722: ...Application Example 5 Page 24 12 ...
Page 788: ...Viewing UDP Relay Statistics Page 26 24 ...
Page 872: ...The WAN Port Software Menu Page 28 46 ...
Page 960: ...Deleting a PPP Entity Page 30 22 ...
Page 978: ...Displaying Link Status Page 31 18 ...
Page 988: ...Displaying ISDN Configuration Entry Status Page 32 10 ...
Page 1024: ...Backup Services Commands Page 34 14 ...
Page 1062: ...Diagnostic Test Cable Schematics Page 36 24 ...
Page 1072: ...Configuring a Switch with an MPX Page A 10 ...
Page 1086: ...Page B 14 ...
Page 1100: ...Page I 14 Index ...
