Extreme Networks BlackDiamond 10808 Installation Guide download pdf (Page 45)

Extreme Networks BlackDiamond 10K-Series Switch Installation Guide 45

4 BlackDiamond 10808 Switch

Management Module

This chapter describes the BlackDiamond Management Switch Fabric Modules (MSM). The two MSMs

are MSM-1 and MSM-1XL:

• Installing MSMs on page 48

• Removing MSMs on page 50

NOTE

Read the information in this chapter thoroughly before you attempt to install or remove the

BlackDiamond Management Switch Fabric Module (MSM).

The MSM holds both the control plane and the switch fabric for the switch. One MSM is required for

switch operation; however, adding an additional MSM increases reliability and throughput.

Each MSM has two CPUs for protocol processing and network management. For full redundancy, you

can install up to two MSMs in the BlackDiamond 10808 switch.

The MSM-1 and MSM-1XL have different sized TCAM (Ternary Content Addressable Memory). TCAM

is used for Longest Prefix Match routing lookups, learned MAC addresses, and ACLs. The MSM-1XL

supports 256,000 entries in its lookup tables, while the MSM-1 supports 128,000 entries in its lookup

table. One of these entries is used up per MAC learned, one per IP route, and two per ACL, and the

lookup table space is dynamically allocated.

For example, if 20,000 ACLs are configured on an MSM-1, along with a routing table of 40,000 entries,

then 48,000 entries would remain for MAC learning. 128,000 total entries - 2 x (20,000 ACLs) - 1 x

(40,000 IP routes) = 48,000.

Table 10 shows that packet throughput between I/O modules increases when additional MSMs are

installed.

Table 10: Packet throughput between I/O modules

# of MSMs Throughput

160 Gbps

320 Gbps

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 87 88

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Extreme Networks BlackDiamond 10808 Installation Guide Page 45