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- DDN MGT Bulletin 75 DCA DDN Defense Communications System
- 1 Aug 90 Published by: DDN Network Info Center
- (NIC@NIC.DDN.MIL) (800) 235-3155
-
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- DEFENSE DATA NETWORK
-
- MANAGEMENT BULLETIN
-
- The DDN MANAGEMENT BULLETIN is distributed online by the DDN Network
- Information Center under DCA contract as a means of communicating
- official policy, procedures and other information of concern to
- management personnel at DDN facilities. Back issues may be read
- through the TACNEWS server ("@n" command at the TAC) or may be
- obtained by FTP (or Kermit) from the NIC.DDN.MIL host [192.67.67.20]
- using login="anonymous" and password="guest". The pathname
- for bulletins is DDN-NEWS:DDN-MGT-BULLETIN-nn.TXT (where "nn" is the
- bulletin number).
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- DEFENSE DATA NETWORK MAILBRIDGES/CORE GATEWAYS
-
-
- DDN Management Bulletin 74 defined MILNET gateway and host addressing
- assignments for acquiring Exterior Gateway Protocol (EGP) service and
- access to subscribers on the Internet. Please correct the Internet
- address given in that bulletin for the Randolph AFB, TX mailbridge to
- read 26.3.0.101. DDN Management Bulletin 74 incorrectly had this
- address as 26.30.0.101 (the correct host port is three, NOT thirty).
-
- In addition, it is emphasized that the 800 number provided in
- Bulletin 74 should only be used for questions concerning address
- assignments. All other problems (e.g., line outages and cross-network
- connection difficulties) should be first referred to the MILNET
- Trouble Desk serving the geographic area of the subscriber as follows:
-
- A. CONUS/Western hemisphere, except Washingon, DC and Alaska:
- 1-800-451-7413 or (202) 486-1982 or (DSN) 231-1787
-
- B. Europe: (DSN) 314-430-5532/5534 or (ETS) 430-5532/5534 or
- (MIL) 2729-5532/5534 or (International) 011-49-711-687-7766
- and 011-49-680-5532/5534
-
- C. Pacific: (DSN) 315-456-1472/1473/1474 or (Commercial)
- 808-656-1472/1473/1474 and 808-624-3744
-
-
- 2. The following is an update on actions being taken to alleviate
- problems being encountered with the mailbridges:
-
- A. The seventh mailbridge at Randolph is scheduled for activation on
- 6 Aug 90.
-
- B. Cutover to the new assignments listed in DDN Management
- Bulletin 74 is scheduled for 10-12 Aug 90.
-
- C. Selected Air Force concentrators have been modified to access only
- a primary EGP server; this has resulted in a reduced demand for EGP
- service. Other gateway administrators are encouraged to take the same
- action if at all possible.
-
- D. Software changes have been deployed and successfully tested with
- Air Force concentrator gateways that permit negotiated EGP update polling
- for up to sixty minute intervals (versus the defacto default of three
- minute intervals). Other gateway administrators are encouraged to use this
- new feature as well.
-
- E. A positive exchange was held with Army, Navy, Air Force, and
- industry representatives on 20 Jun 90. This resulted in a common
- understanding of the complexities associated with gateway protocols and
- Internet routing issues and laid the groundwork for implementation of
- protocols beneficial to all.
-
- F. An extended outage of the communications link between the
- mailbridge in McLean, VA and the Internet node at College Park, MD has
- had an adverse impact on traffic between the MILNET and the Internet,
- as well as on network gateway updates from the Internet. This outage
- forces all traffic and updates to traverse the mailbridge at Moffett
- Field, CA and results in the inability to handle the offered traffic
- load and occasional loss of EGP updates. The restoration of this
- vital link is being actively pursued and we are evaluating the
- feasibility of establishing other alternate paths between the MILNET
- and the Internet. We are also working with the Army to off-load a
- major MILNET/Internet host traffic flow directly to the Internet.
-
-
- 3. Request widest dissemination of the above information. POC is Mr. Wayne
- Grindle, DOD, (DSN) 356-5030 or (703) 285-5030 or Mr. Dennis Morris, DRFD,
- (DSN) 356-5221 or (703) 285-5221.
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