Netgear XCM8810 Chassis User Manual - Page 604
Hardware Routing Table Management, The switch hardware provides the fast path
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NETGEAR 8800 User Manual #s 81.0.0.0/8 #s 82.0.0.0/8 #s 83.0.0.0/8 #d 91.1.10.0/24 #d 92.1.10.0/24 #d 93.1.10.0/24 12.1.10.13 12.1.10.10 12.1.10.10 91.1.10.62 92.1.10.62 93.1.10.62 1 UG---S-um--- v1 1 UG---S-um--c v1 1 UG---S-um--c v1 1 U------um--f v9 1 U------um--f v10 1 U------um--f v11 0d:19h:58m:58s 0d:19h:58m:58s 0d:19h:58m:58s 0d:19h:58m:59s 0d:19h:59m:2s 0d:19h:59m:2s Origin(Ori): (b) BlackHole, (be) EBGP, (bg) BGP, (bi) IBGP, (bo) BOOTP (ct) CBT, (d) Direct, (df) DownIF, (dv) DVMRP, (e1) ISISL1Ext (e2) ISISL2Ext, (h) Hardcoded, (i) ICMP, (i1) ISISL1 (i2) ISISL2 (is) ISIS, (mb) MBGP, (mbe) MBGPExt, (mbi) MBGPInter, (mo) MOSPF (o) OSPF, (o1) OSPFExt1, (o2) OSPFExt2 (oa) OSPFIntra, (oe) OSPFAsExt, (or) OSPFInter, (pd) PIM-DM, (ps) PIM-SM (r) RIP, (ra) RtAdvrt, (s) Static, (sv) SLB_VIP, (un) UnKnown (*) Preferred unicast route (@) Preferred multicast route (#) Preferred unicast and multicast route Flags: (B) BlackHole, (D) Dynamic, (G) Gateway, (H) Host Route (L) Matching LDP LSP, (l) Calculated LDP LSP, (m) Multicast (P) LPM-routing, (R) Modified, (S) Static, (s) Static LSP (T) Matching RSVP-TE LSP, (t) Calculated RSVP-TE LSP, (u) Unicast, (U) Up (f) Provided to FIB (c) Compressed Route Mask distribution: 2 default routes 1 routes at length 16 2 routes at length 32 12 routes at length 8 9 routes at length 24 Route Origin distribution: 8 routes from Direct 18 routes from Static Total number of routes = 26 Total number of compressed routes = 8 Hardware Routing Table Management The switch hardware can route traffic based on information stored in hardware and software routing tables. Routing tasks are completed much faster when the routes are already stored in hardware routing tables. When packets are routed using the hardware routing tables, this is called fast-path routing, because the packets take the fast path through the switch. The switch hardware provides the fast path, and the XCM8800 software provides the routing management capabilities, including management of the hardware routing tables. The software collects all routing information, manages the routes according to the switch configuration, and stores the appropriate routes in the hardware routing tables. When an IP unicast packet arrives and the destination IP address is not found in the hardware route tables, it is routed by software. The software processing takes more time than the fast path, so routing based on the software tables is called slow-path routing. NETGEAR 8800 switches allow you to customize the software management of the hardware routing tables using the following hardware components: 604 | Chapter 20. IPv4 Unicast Routing