Nortel Networks 8005DC User Manual
Page 21
Metro Ethernet Routing Switch 8600 R module feature set
21
Maximum number of ports per chassis
Module type
Port type
8003
8006
8010 and
8010co
OC-3c MDA
12
24
24
8683POSM
(see Note 4)
OC-12c MDA
6
12
12
Note 1: The 8003 chassis is not supported with Metro Ethernet Routing Switch 8600.
Note 2: For information about these Media Dependent Adapters (MDA), see
. The 8672ATME and 8672ATMM modules are not supported with
Metro Ethernet Routing Switch 8600 Ethernet VPN services.
Note 3: Metro Ethernet Routing Switch 8600 does not support the 8681XLR and 8681XLW modules.
Note 4: For information about these MDAs, see
. The 8683POSM
module is not supported with Metro Ethernet Routing Switch 8600 Ethernet VPN services.
Metro Ethernet Routing Switch 8600 pre-E, E, and M modules
feature set
Each Metro Ethernet Routing Switch 8600 pre-E, E, or M module consists
of a Backplane Forwarding Module (BFM) with common application
specific integrated circuits (ASIC) on each module. These ASICs provide a
forwarding engine and local storage of Layer 2 to 4 forwarding tables. Each
forwarding engine provides lookups, resolves addresses and sends packets
through the switch fabric to a destination port without CPU intervention. The
forwarding engine also filters packets against current prioritization policies
and can set prioritization information in the internal packet header.
The BFM is also equipped with eight priority queues per port. You can use
either of the following two prioritization schemes:
•
Strict priority
•
Weighted Round Robin (WRR)
Strict priority guarantees the highest priority. WRR gives priority based on a
round robin algorithm. For more information about prioritization schemes
see Network Design Guidelines (313197-E).
Output buffer memory consists of 8 MB of memory allocated to each Gigabit
Ethernet port or shared among eight 10/100 ports.
Note that Metro Ethernet Routing Switch 8600 does not support pre-E
modules.
Metro Ethernet Routing Switch 8600 R module feature set
Each Metro Ethernet Routing Switch 8600 R module (Release 4.0 and
later) consists of a Distributed Processing Module (DPM) as well as a Port
Interface Module (PIM). The PIM consists of various Media Access Controls
Nortel Metro Ethernet Routing Switch 8600
Installation — Modules
NN46220-306
02.02
Standard
4.2
7 July 2008
Copyright © 2005-2007, Nortel Networks
.