Cisco 3550-12T - Catalyst Switch - Stackable Preguntas y respuestas - Página 5
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Q.
Is there any limit to the number of a particular GBIC or combination of different GBICs that can be used on a
Cisco Catalyst 3550 Series Switch?
A.
No. Users can populate all the GBIC ports of any Cisco Catalyst 3550 Series Switch with the same GBIC or with a
combination of different GBICs.
Q.
Does the Cisco Catalyst 3550 Series have redundant power system (RPS) support?
A.
Yes, the Cisco RPS 300 supports all Cisco Catalyst 3550 Series Switches except the Cisco Catalyst 3550-24 PWR. The
new RPS 675 supports the Cisco Catalyst 3550-24 PWR and all other Cisco Catalyst 3750, Catalyst 3550, Catalyst
2970, and Catalyst 2950 Series models. The RPS 675 does not support Cisco Catalyst 3524-PWR XL. The Cisco RPS
300 and RPS 675 provide superior internal power-source redundancy for up to six Cisco networking devices, resulting in
improved fault tolerance and network uptime. Please see the Cisco RPS 300 Switch Compatibility matrix and the Cisco
RPS 675 Switch Compatibility matrix for a list of Cisco devices supported by the RPS 300 and RPS 675.
RPS 300:
http://www.cisco.com/en/US/products/hw/routers/ps2883/prod_release_note09186a00800d9d95.html
RPS 675:
http://www.cisco.com/en/US/products/hw/routers/ps2883/ps5066/index.html
Q.
Does the Cisco Catalyst 3550 Series support Inter-Switch Link (ISL) virtual LAN (VLAN) trunking?
A.
Yes, the Cisco Catalyst 3550 Series supports both 802.1Q trunking and ISL trunking. VLAN trunks can be created from
any port using either standards-based 802.1Q tagging or the Cisco ISL VLAN architecture.
Q.
Does it cost more for a Layer 3 or special-features license?
A.
The Cisco Catalyst 3550-24 EMI, Catalyst 3550-48 EMI, Catalyst 3550-24 PWR EMI, Catalyst 3550-12T, and Catalyst
3550-12G are loaded with the EMI, so all feature license fees are part of the standard list price. However, the Cisco
Catalyst 3550-24 SMI, Catalyst 3550-48 SMI, Catalyst 3550-24 PWR SMI, Catalyst 3550-24 DC SMI, and Catalyst 3550-
24 FX SMI switches are loaded with the SMI; these switches can be upgraded to the EMI with the purchase of the EMI
upgrade kit (part number CD-3550-EMI=).
Q.
What features are only supported on the EMI?
A.
The following features and functionality are only supported with the EMI:
Advanced IP routing protocols for load balancing and constructing scalable LANs:
●
OSPF
◦
IGRP and EIGRP
◦
BGPv4
◦
WCCP to allow switch interaction with a cache for the purpose of redirecting content requests to a cache and
●
performing basic load balancing across multiple caches
PBR to allow specific policies to be implemented by causing selective traffic to take different paths
●
PIM for IP multicast routing within a network that enables the network to receive the multicast feed requested and for
●
switches not participating in the multicast to be pruned; support for PIM sparse mode (PIM SX), PIM dense mode (PIM
DX), and PIM sparse-dense mode
Distance Vector Multicast Routing Protocol (DVMRP) tunneling for interconnecting two multicast-enabled networks
●
across non-multicast networks
Q.
Are there five packs or multipacks for the Cisco Catalyst 3550 Series Switches?
A.
No.
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