Cabletron Systems 1800 - Manual (Page 317)

St atus Displays 20-19
The three numbers near the upper right identify (from left to right) the currently
selected frame, the lowest sequence number (
Num – see below) in the current buffer,
and the highest sequence number in the current buffer.
Information in this Display:
● Num – a five-digit sequence number.
● Time – the time to the hundredth of a second since the first "event" in the current
buffer.
● D – the data direction: I (incoming) or O (outgoing). On monitors capable of dis-
playing reverse video, outgoing frames will be displayed in reverse video.
● Type – the frame type: IP , IPX , Bridge , or Unknown .
● Len – length of the frame.
● Data – source MAC address, destination MAC address, frame type, and first 76
bytes of the frame, in hex.
Note that pressing [F7] will allow specification of an event (sequence) number to be
displayed, in case that number is not currently on the screen. (It must, however, be in
the buffer.)
The capture buffer can hold the first 76 bytes of each packet, up to 1000 packets.
Displaying Frame Relay Backup Status
To display operational states of backup and backed-up frame relay DLCIs, press [E] at
the Protocol Status Displays Menu (or [C], [F], [E] from the Main Menu), then select
from the following list and enter (when prompted) the RLP/port or group number:
A Display States for all Backup DLCIs on a Port
B Display States for all Primary DLCIs on a Port
C Display States for all Backup DLCIs in a Group
Possible States:
● Active – The DLCI is capable of passing data.
● Backup Wait – (Primary DLCI only) The DLCI is down or undergoing IPL, but
the switchover timer has not yet expired.
● Backed Up – (Primary DLCI only) The DLCI has been backed up, and data will
be routed over the backup DLCI.
● Restore Wait – (Backup DLCI only) The primary DLCI is now up, but the
switchback timer has not yet expired. (The state will return to Active if the
Primary DLCI goes down again before the timer expires.)
● Inactive – (Backup DLCI only) The DLCI is available.
● ACK Wait/Hold – The initiating node has issued a switchover or switchback
command and is waiting for an ACK (acknowledgment) from the remote node.
Received data traffic will be held pending the ACK.
● ACK Wait/Discard – The ACK (see ACK Wait/Hold ) has not been received within
a pre-determined number of transmissions of the switchover/switchback
command. Any received or held traffic will be discarded.