Format - ZyXEL Communications MSC1024G Series User Manual

Chapter 5 Access Control List Screens
Port No field specifies the ingress port number (both in hexadecimal format). The next field is
2 bytes and displays the DHCP request packet's VLAN ID. The last field (A) can range from 1
to 24 bytes (including a one-byte termination character) and is optional information (that you
specify) about this relay agent.
Table 7 DHCP Relay Agent Circuit ID Sub-option Format: Private
1
The Agent Information field that the MSC adds also contains an "Agent Remote-ID sub-
option" of information that you specify.
The following table shows the format of the private Agent Remote ID sub-option. The "2" in
the first field identifies this as an Agent Remote ID sub-option. The length N gives the total
number of octets in the Agent Information Field. Next, the extra information field (A in the
table) contains from 0 to 23 bytes of optional information (that you specify) with no spaces
and no termination character (if you do not specify any information, this field contains no
data). Next, there is a space and the letters "eth" followed by another space. Then there is the
slot number and port number (in plain text format) upon which the DHCP client request was
received. This is followed by a colon (:), the VLAN ID (VID) number, a period (.) and the
MAC address (in hexadecimal format).
Table 8 DHCP Relay Agent Remote ID Sub-option Format: Private
2
5.1.3 TR-101 Format
The Agent Information field that the management switch card adds contains an "Agent
Circuit-ID sub-option" that includes the system name or IP address, slot ID, port number, VPI,
and VCI on which the TCP/IP configuration request was received.
The following figure shows the format of the TR-101 Agent Circuit ID sub-option. The 1 in
the first field identifies this as an Agent Circuit ID sub-option. The next field specifies the
length of the field. The hostname field displays the system name, if it has been configured, the
extra information field (A) if the hostname was not configured, or the IP address in dotted
decimal notation (w.x.y.z), if neither the system name nor the extra information field was been
configured. In either case, the hostname is truncated to 23 characters, and trailing spaces are
discarded. The hostname field is followed by a space, the string "atm", and another space.
Then, a 1-byte Slot ID field specifies the ingress slot number, and a 1-byte Port No field
specifies the ingress port number. Next, the VPI and VCI denote the virtual circuit that
received the DHCP request message from the subscriber. If the VID is turned on, there is a
colon and then the VLAN ID (1 ~ 4094). If the VID is turned off, there is neither colon nor
VID.
The slot ID, port number, VPI, VCI and MAC are separated from each other by a forward
slash (/) colon (:) or period (.). An example is "SYSNAME atm 3/10:0.33:12".
Table 9 DHCP Relay Agent Circuit ID Sub-option Format: TR-101 (VID on)
1 N
Table 10 DHCP Relay Agent Circuit ID Sub-option Format: TR-101 (VID off)
1 N
94
N Slot No Port No
N A "eth "
hostname / A / IP "atm "
hostname / A / IP "atm "
VLAN ID
Slot No. / Port No.
Slot ID / Port No. : VPI
Slot ID / Port No. : VPI
MSC1000G/1024G/1224G Series User's Guide
A
: VLAN ID . MAC
. VCI : VLAN ID
. VCI