Blackdiamond 10808 Switch Management Module - Extreme Networks BlackDiamond 10K Series Installation Manual

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 62
• Removing MSMs on page 64
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
1
2
Extreme Networks BlackDiamond 10K-Series Switch Installation Guide
Throughput
160 Gbps
320 Gbps
59