Default Ip Address - Nortel BayStack 5520-24T-PWR Specifications

BoSS v4.1 features
Newly released BoSS version 4.1 is included with the BayStack 5520 Switches and is down-
loadable from the Web for free for BayStack 5510 Switch users. It includes support for the
following new features:
• IEEE 802.3ad Link Aggregation

• Default IP address

• Auto unit replacement (config only)
• Simple Network Time Protocol (SNTP)
• System Classifier (Offset Filtering)
• Syslog
• Web Quick Start
• Port Shaping
• 802.1x Enhancements (Multiple Hosts/Multiple Authentication and Guest VLAN)
IEEE 802.3ad Link Aggregation
IEEE 802.3ad provides an industry-standard method for bundling multiple links together
to form a single trunk between two networking devices. BoSS 4.1 supports both Dynamic
Link Aggregation Group (LAG) trunks and MLT trunks. Once configured, the Link
Aggregation Group or trunk group is managed by the Link Aggregation Control Protocol
(LACP). BayStack supports both Link Aggregation and MLT groups. Up to six LAG or MLT
groups are supported. The maximum number of active links per group is four. The Link
Aggregation allows more than four links to be configured in one Link Aggregation group
(LAG). The first four high priority links will be active links and the lower priority link will be a
standby link. When one of the active links goes down, the standby link will become active. This
feature can be implemented by using Command Line Interface, Device Manager, or SNMP.
Default IP address
Customers can discover, manage, and configure the switches remotely without having to
assign a new IP address to the unit. The default IP address and subnet mask set for the
switch/stack will be 192.168.192.168/255.255.255.0 and can be set via the front panel
User Interface button.
Auto unit replacement (config only)
Users can replace a failed unit in the stack without having to re-configure the new unit after
placing it in the stack. For this feature to work, the unit that is being replaced must have
BoSS v4.1. The next software release will not require the unit being replaced have the same
version as the new unit being added.
Simple Network Time Protocol (SNTP)
With this feature, synchronization of the switch or stack's clock to the real-time clock on the
SNTP server is allowed. If the system (switch or stack) uses SNTP, then SNTP time is used
to time-stamp system log (Syslog) messages. If SNTP is not in use, then the system uses a
time-stamp relative to boot time.
System Classifier (Offset Filtering)
Users can now define their own filters using any 32 bytes in the first 80 bytes of the packet
for more QoS granularity. This gives greater classification capabilities on the switch; the user
is no longer limited to just using certain protocol header fields such as VLAN ID, IP source
address, or IP protocol field for classification.
Nortel Networks unique FAST stack-
ing design supports an optimal
data flow across the stack using a
shortest path algorithm.
Most vendors today employ a
traditional ring architecture,
meaning that a packet travels on
the ring in only one direction.
For example, in a stack of eight
switches, if a packet needs to go
from unit 2 to unit 3, it can get there
in a single hop. But if a packet needs
to go from unit 3 to unit 2, then it
has to traverse from 3 to 4, 4 to 5, 5
to 6, and so on until it reaches unit 2.
This requires seven hops. Nortel
Networks FAST stack design uses
the shortest path algorithm, which
means that the packet would
traverse directly from unit 3 to
unit 2 in a single hop.
.
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