High density networking shelf and system
A system, a shelf, and a high density platform optimize physical arrangement of cards to maximize cooling effectiveness and line card pitch while minimizing backplane trace lengths between line interface and switch fabric cards. The shelf and system and associated card arrangement supports scaling to a larger, double size system that maintains the required length of backplane traces for card communications without compromising card cooling. Advantageously, the shelf and system maintains full NEBS compliance through an arrangement supporting full air intake/outtake through a front and/or back of the shelf or system, i.e. no side ventilation, and includes a false front to ensure all cards (switch fabric and line interface cards) are substantially flush with one another.
1. A system, comprising:
one or more cards vertically insertable into a backplane;
one or more cards horizontally insertable into the backplane, wherein the one or more cards horizontally insertable comprise a false faceplate that is substantially flush with a faceplate of the one or more cards vertically insertable when each is inserted in the backplane;
wherein a first air path is defined for air flow to cool the one or more cards vertically insertable;
wherein a second air path is defined for air flow to cool the one or more cards horizontally insertable, wherein each of the first air path and the second air path begin at a front portion of the system and end at a rear portion of the system;
a recess portion between the one or more cards vertically insertable and the one or more cards horizontally insertable, wherein the recess portion is formed by an extension on each of the one or more cards horizontally insertable, wherein the first air path extends from the recess portion to exhaust openings on a rear portion of the system, wherein interface fans are located above the one or more cards vertically insertable, wherein the first air path extends from lower portions of the front portion of the system to exhaust openings on a rear portion of the system; and
fabric fans located on a side of the one or more cards horizontally insertable, wherein the second air path extends from an opening on an opposite side from the fabric fans to exhaust openings on a lower rear portion of the system.
2. The system of claim 1 , wherein the first air path and the second air path are separate.
3. The system of claim 1 , wherein the false faceplate comprises light pipes to display visual indicators from the one or more cards horizontally insertable.
4. The system of claim 1 , wherein the one or more cards horizontally insertable are shorter in depth than the one or more cards vertically insertable and the false faceplate extends the one or more cards horizontally insertable to be substantially equal in depth to the one or more cards vertically insertable.
5. The system of claim 1 , wherein the one or more cards vertically insertable comprise a first set of cards located above the one or more cards horizontally insertable, and further comprising:
one or more cards comprising a second set of cards vertically insertable located below the one or more cards horizontally insertable.
6. The system of claim 1 , wherein the system is mountable in a 19″, ETSI, or 21″ rack or frame.
7. A shelf, comprising:
a housing;
a first cage in the housing for vertically insertable cards;
a second cage in the housing for horizontally insertable cards, wherein the second cage is shorter in depth than the first cage thereby forming a recess portion therebetween, wherein the horizontally insertable cards each comprise a false faceplate that is substantially flush with a faceplate of the vertically insertable cards when each is inserted in their associated cage;
wherein a first air path is defined for air flow to cool the first cage;
wherein a second air path is defined for air flow to cool the second cage, wherein each of the first air path and the second air path begin at a front portion of the housing and end at a rear portion of the housing, wherein the first air path extends from the recess portion to exhaust openings on a rear portion of the housing; and
interface fans located above the first cage, wherein the first air path extends from lower portions of the front portion of the housing to exhaust openings on a rear portion of the housing, and fabric fans located on a side of the second cage, wherein the second air path extends from an opening on an opposite side from the fabric fans to exhaust openings on a lower rear portion of the housing.
8. The shelf of claim 7 , wherein the first air path and the second air path are separate.
9. The shelf of claim 7 , wherein the false faceplate comprises light pipes to display visual indicators from the horizontally insertable cards.
10. The shelf of claim 7 , wherein the horizontally insertable cards are shorter in depth than the vertically insertable cards and the false faceplate extends the horizontally insertable cards to be substantially equal in depth to the vertically insertable cards.
11. The shelf of claim 7 , wherein the interface cage comprises a first interface cage located above the switch fabric cage, and further comprising:
a second interface cage located below the switch fabric cage.
12. The shelf of claim 7 , wherein the shelf is mountable in a 19″, ETSI, or 21″ rack or frame.
13. A high density platform, comprising:
a housing mountable in a 12″ rack;
one or more cards vertically insertable into a backplane of the housing;
one or more cards horizontally insertable into the backplane, wherein the one or more cards horizontally insertable comprise a false faceplate that is substantially flush with a faceplate of the one or more cards vertically insertable when each is inserted in the backplane;
wherein the one or more cards horizontally insertable are shorter in depth than the one or more cards vertically insertable and the false faceplate extends the one or more cards horizontally insertable to be substantially equal in depth to the one or more cards vertically insertable while concurrently forming an open recess portion between the one or more cards horizontally insertable and the one or more cards vertically insertable for air flow;
wherein interface fans are located above the one or more cards vertically insertable, wherein a first air path extends from the open recess portion to exhaust openings on a rear portion of the housing; and
wherein fabric fans located on a side of the one or more cards horizontally insertable, wherein a second air path extends from an opening on opposite side from the fabric fans to exhaust openings on a lower rear portion of the housing.