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Technical Configuration Guide v2.0 NN48500-559
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• If you are using (the AppleTalk Filing Protocol) AFP, use large or maximum resource
sharing (AFP use a fix windows size set to 65,535K).You should use the large resource
sharing setting:
• If you are using your 5520 for high bandwidth application such as video.
• If you are using large TCP windows for your traffic, use large resource sharing (you can
also reduce the TCP windows size on windows operating system - see Microsoft TechNet
article 224829).
• If you have 4 or fewer ports connected per group of 12 ports.
You should use the Regular resource sharing setting:
• If you are using your 5520 in a VOIP environment.
• If you have 5 or more ports connected per group of 12 ports.
Egress CoS Queuing
The following charts describe each possible egress CoS queuing setting. The mapping of 802.1p
priority to egress CoS queue, dequeuing algorithm, and queue weight is given. Additionally, the
memory and maximum number of packets which can be buffered per egress CoS queue and
resource sharing settings is shown.
Table 5: Ethernet Routing Switch 5500 Egress CoS Queuing
Setting
Internal
Priority
Egress
CoS
Queue
Dequeuing
Algorithm
Weight
Regular
Memory/
# of 1518
Byte
Packets
Large
Memory/ #
of 1518
Byte
Packets
Max
Memory/ #
of 1518
Byte
Packets
36864B 49152B 131072B
7 1 Strict 100%
24 32 86
36864B 47104B 123392B
6 2 41%
24 31 81
27648B 45056B 115712B
5 3 19%
18 29 76
18432B 43008B 108032B
4 4 13%
12 28 71
18432B 39936B 97792B
3 5 11%
12 26 64
18432B 36864B 85504B
2 6 8%
12 24 56
18432B 33792B 70656B
1 7 5%
12 22 46
18432B 30720B 54272B
8 CoS
0 8
Weighted
Round Robin
3%
12 20 35
36864B 49152B 144640B
7 1 Strict 100%
24 32 95
32768B 46080B 131840B
6 2 45%
21 30 86
26624B 39936B 120064B
5 3 21%
17 26 79
19968B 33280B 109824B
7 CoS
4 4
Weighted
Round Robin
15%
13 21 72