RuggedRouter User Guide
After assigning the first DLCI, you may revisit the interface through the link under
the Name field and add additional DLCIs.
Once all channels have been assigned, the “Assign” links will no longer appear, as
shown below. Note that any of the Frame Relay interfaces on a channel (in this case
w1c4fr16 and w1c4fr17) may be used to edit the Frame Relay Link Parameters.
Figure 53: T1/E 1 Networ k Inter faces A fter I nterfac e Creat ion
Naming O f Logical Interfaces
Webmin names the logical interfaces for you (but allows you to provide a
description). All interfaces start with a “w” to identify them as wan interfaces,
followed by the physical interface number.
Unchannelized hardware interfaces supply only one channel (that can be composed of
a varying number of timeslots) logical interface. You may configure one PPP
interface or up to 990 Frame Relay DLCI interfaces. The next part of the identifier is
either “ppp” or “frX” where X the frame relay channel number.
Channelized hardware allows more than one logical interface. The next part of the
identifier indicates the channel the interface uses with a “c” followed by the lowest
channel used. The final part of the identifier is either “ppp” or “fr” and the frame
relay channel number.
Note: O nce a chan nel is cr eated, and an inter face is co nstructed on it, th e name of the
interfac e will nev er change . This wi ll remain true even if the number of timeslots on
the chan nel is cha nged. Th is propert y is desir able sinc e interfac e names u sed by
features such as O SPF, RIP and the fi rewall can rely on the inter face name. Channel
re-assig nments can , however, lead to a non-intu itive rel ationship between c hannels
and time slots.
Editing A T1/E1 Inter face
Figure 54: Edit T1 Inte rface
68 RuggedCom