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Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Chapter
Core Module Overview
ASC LED Indicators
The ASC LED indicators are located on the faceplate of the front card. Table 2-1 describes the LED
indicators.
Auto Card Restore
Auto card restore is a feature that allows a service module card to be removed and be hot plug replaced
with another service module card, keeping the same configuration. With this feature, the ASC maintains
a copy of the configuration for each active service module.
Broadband Network Modules
The BNM card set provides the Cisco MGX 8220 trunk interface to a Cisco BPX 8600 series node.
There are two major types of BNMs, one supports a T3 or E3 trunk and one supports a 155 Mbps
SONET SMF trunk.
Each Cisco MGX 8220 shelf must be equipped with at least one BNM installed in slot 1 or slot 2. A
second, redundant BNM can also be installed in slot 1 or slot 2. The primary and the redundant BNMs
must be of the same type. Each BNM installed consists of a front and back card set.
In addition, the BNM provides
• External alarm interface
• Fan monitor interface
• Port for accepting an external T1 or E1 clock source
Table 2-1 ASC LED Indicators
Type of LED Color Meaning of LED
ACT Green On indicates the card is active.
STBY Yellow
• Slow blink without active LED indicates the card is in the boot
state.
• Fast blink with active LED indicates the ASC is downloading to
another card or is being downloaded.
• Steady yellow indicates the card is in standby state. The
firmware is executing ADMIN code.
FAIL Red
• Steady red with active and standby LEDs off indicates the card
is in the reset condition, the card has failed, or the card set is not
complete (no line module).
• Steady red with active LED on indicates the card was active
prior to failing.
• Steady red with standby LED on indicates the card was in
standby prior to failing.
• Blinking red indicates the card is in the power up state.
LAN Green On indicates receive activity through the LAN port. A green flash is
seen for every packet received.