3Com S330 UNI groups, Adding UNI Groups, Bit Error Rates Translated into Total Number of Errors

92CHAPTER 4: CONFIGURING PATHBUILDER S330/S310 MODULES, PORTS, AND APPLICATIONS

Table 22 Bit Error Rates Translated into Total Number of Errors

Bit
Error
Rate	Total Errors in	Total Errors in	Total Errors in	Total Errors in	Total Errors in
(BER)	1 second	1 Minute	2 Minutes	5 Minutes	15 Minutes
10-4	15	900	1800	4500	13500
10-5	1.5	90	180	450	1350
10-6	0.15	9	18	45	135
10-7	0.015	1	2	5	13

The T1 (DS1)/E1 UNI Configuration menu lists the following additional read-only parameters:

Group—The number of the group to which the ports belong.

Tx LID—Transmit link identification. This should match the Rx LID of the remote end IMA device. Tx LID is displayed only if the port is part of an IMA group.

Rx LID—Receive link identification. This should match the Tx LID of the remote end IMA device. Rx LID is displayed only if the port is part of an IMA group.

Operation Link Delay—Operation link delay synchronized, in msec. This is the actual link delay used to synchronize the IMA links. Operations LDS is displayed only if the port is part of an IMA group.

6Select [9] Previous Menu to return to the T1/E1 UNI Configuration menu.

7Repeat steps 3 and 4 for any other T1/E1 ports that you want to configure.

Configuring UNI and You can map two to four T1/E1 ports into an IMA group, thereby creating a IMA Groups logical, inverse-multiplexed, high-speed link. The PathBuilder S330 also supports

UNI groups.

The PathBuilder S310 features a single T1/E1 port and does not support IMA or

UNI groups.

The DS3/E3 UNI shares the same queue (Queue 1) as the Group 1 IMA UNI; therefore, if a DS3/E3 expansion card is installed in slot 9, the system deletes Group 1 and all corresponding VCs on startup and generates an information only alarm. Furthermore, you cannot add Group 1 if a DS3/E3 expansion card is installed—either in the chassis or in the database. If you change the card type for slot 9 to DS3/E3 via the List Card menu, Group 1 and the corresponding VCs are not deleted until the system is restarted.

Adding UNI Groups

To set up a UNI group, follow these steps:

1From the Configuration Management menu, select [1] Manage Card to display the List Card menu, shown earlier in Figure 51.

2From the List Card menu, select [3] DS1 UNI to open the T1 (DS1) UNI or E1 UNI Configuration menu, shown earlier in Figure 58.

3From the T1 (DS1) UNI or E1 UNI Configuration menu, select [3] Group Configuration to display the Group menu, shown in Figure 61.