Confidential Page 6 10/27/98
The
FAQ
About the 2800
Q: What protocols does the 2800 support?
A:TCP/IP Suite, ICMP, TFTP, FTP, Ethernet ARP, Proxy ARP and RARP protocols, PPP,
Van Jacobson TCP header compression, PPP address and protocol compression
RADIUS Authentication and Accounting with support for primary and secondary servers
RIP & RIPv2 dynamic route distribution, TCP clear connections, Frame Relay, SyncPPP,
V.120/V.110, NETBios broadcast.
Q: What types of authentication is supported by the 2800?
A: The 2800 supports several forms of authentication. First is ASCII based where a dial-in users
enters his name and password. This then can be used to authenticate against the 2800’s internal
user database or via a RADIUS server. Also supported are PPP’s PAP or CHAP which
automatically obtains the username and password. Usernames and Passwords obtained from PAP
or CHAP can be authenticated via the internal user database or via RADIUS.
Q: Does the 2800 support RADIUS Authentication, Authorization and Accounting?
Q: How many authentication and accounting servers can the 2800 support?
A: Yes. The 2800 supports the RADIUS RFC’s 2138 (Authorization) and 2139 (Accounting). The
2800 also has the facilities to support multiple RADIUS servers for both authorization and
Accounting.
Q: What GUI is available for the 2800?
A: The 2800 has a built in GUI through the use of your standard web browser. The most common web
browsers are from Netscape and Microsoft.
Q: Can I use HPOpenview?
A: You can use HPOpenview or anyother SNMP based management system with the 2800 and you
can use them at the same time you use the web GUI.
Q: I want to monitor the number of users over time. What tools are available for this?
A: The freeware package called MRTG can be used to provide graphing of any SNMP variables on
your 2800.
Q: How are IP addresses allocated for users?
A: IP addresses can be allocated one of three ways. 1) A dynamic pool is entered into the 2800.
When the user is connected, the 2800 will issue one of these address and use this address for the
duration of the call. 2) A user may have a static address which will be given to the user during the
connection setup. 3) RADIUS can return an address which the 2800 will use for that user.
Q: Does the 2800 support TACACS, XTACACS or TACACS+
A: We have chosen RADIUS as the external authentication protocol of choice. The Internet
community as a whole has also gone this route. RADIUS has always been an open protocol first
developed by Livingston Enterprises. TACACS and XTACACS has always been a private protocol
under the control of Cisco. Currently Cisco has issued an “End of Maintenance” notice in which
they will not support these protocols. There are many RADIUS servers which offer enhanced
functionality and are often freeware.
Q: What applications for Drop-and-Insert does the 2800 support?
A: The 2800 supports E1 R2 and T1 Robbed-Bit Drop-and-Insert. The timeslots are a one-for-one
passthru and do not require the use of any DSP’s. There currently is no ISDN D&I functionality.
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