HPE FlexNetwork 5510 HI Series Layer 3 - Ip Routing Configuration Guide

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Figure 19 OSPF router types
Route types
OSPF prioritizes routes into the following route levels:
• Intra-area route.
• Inter-area route.
• Type-1 external route.
• Type-2 external route.
The intra-area and inter-area routes describe the network topology of the AS. The external routes
describe routes to external ASs.
A Type-1 external route has high credibility. The cost from a router to the destination of a Type-1
external route = the cost from the router to the corresponding ASBR + the cost from the ASBR to the
destination of the external route.
A Type-2 external route has low credibility. OSPF considers that the cost from the ASBR to the
destination of a Type-2 external route is much greater than the cost from the ASBR to an OSPF
internal router. The cost from the internal router to the destination of the Type-2 external route = the
cost from the ASBR to the destination of the Type-2 external route. If two Type-2 routes to the same
destination have the same cost, OSPF takes the cost from the router to the ASBR into consideration
to determine the best route.
Route calculation
OSPF computes routes in an area as follows:
• Each router generates LSAs based on the network topology around itself, and sends them to
other routers in update packets.
Area 1
Area 2
Area 3
Area 4
Backbone router
ASBR
IS-IS
RIP
Internal router
ABR
Area 0

HPE FlexNetwork 5510 HI Series Specifications

General

Model	HPE FlexNetwork 5510 HI Series
Category	Switch
Switch Type	Managed
Fans	Redundant fans
Layer	Layer 3
IPv6 Support	Yes
Warranty	Limited lifetime warranty
Power over Ethernet (PoE)	Available on some models (PoE+)
MAC Address Table Size	32, 000 entries
Routing Protocol	RIP, OSPF, BGP, IS-IS, Static Routing
Management	CLI, Web, SNMP
Operating Temperature	0°C to 45°C
Dimensions	440 x 400 x 44 mm
Input Voltage	100-240 VAC, 50/60 Hz
Memory and Processor	1 GB RAM, 1 GHz CPU
Operating Humidity	5% to 95% (non-condensing)
Security Features	ACL, 802.1X, RADIUS, TACACS+, SSH, SSL