Routing Management Policy
283
The Switch 7750 Ethernet Switches (hereinafter referred to as the Switch 7750)
support the configuration of static routes as well as a series of dynamic routing
protocols such as RIP, OSPF and BGP. Moreover, the switches in operation can
automatically obtain some direct routes according to interface status and user
configuration.
Routing Management
Policy
On a Switch 7750, you can manually configure a static route to a certain
destination, or configure a dynamic routing protocol to make the switch interact
with other routers in the internetwork and find routes by routing algorithm. On a
Switch 7750, the static routes configured by the user and the dynamic routes
discovered by routing protocols are managed uniformly. The static routes and the
routes learned or configured by different routing protocols can also be shared
among routing protocols.
Routing Protocols and
Preferences
Different routing protocols may discover different routes to the same destination,
but only one route among these routes and the static routes is optimal. In fact, at
any given moment, only one routing protocol can determine the current route to a
specific destination. Routing protocols (including static routing) are endowed with
different preferences. When there are multiple routing information sources, the
route discovered by the routing protocol with the highest preference will become
the current route. Routing protocols and their default route preferences (the
smaller the value, the higher the preference is) are shown in Table 210.
In the table, “0” is used for directly connected routes, and “255” is used for
routes from untrusted source.
Destination Network
Nexthop
Interface
11.0.0.0 14.0.0.1
3
12.0.0.0 14.0.0.1
3
13.0.0.0 16.0.0.1
2
14.0.0.0 14.0.0.3
3
15.0.0.0 17.0.0.2
1
16.0.0.0 16.0.0.2
2
17.0.0.0 17.0.0.1
1
Table 210
Routing protocols and corresponding route preferences
Routing protocol or type
Preference of the corresponding route
DIRECT 0
OSPF 10
IS-IS 15
STATIC 60
RIP 100
OSPF ASE
150
OSPF NSSA
150
UNKNOWN 255
IBGP 256
EBGP 256
Summary of Contents for Switch 7754
Page 32: ...32 CHAPTER 1 CLI OVERVIEW ...
Page 70: ...70 CHAPTER 5 LOGGING IN USING MODEM ...
Page 76: ...76 CHAPTER 7 LOGGING IN THROUGH NMS ...
Page 86: ...86 CHAPTER 9 CONFIGURATION FILE MANAGEMENT ...
Page 120: ...120 CHAPTER 13 ISOLATE USER VLAN CONFIGURATION ...
Page 126: ...126 CHAPTER 14 SUPER VLAN ...
Page 136: ...136 CHAPTER 16 IP PERFORMANCE CONFIGURATION ...
Page 152: ...152 CHAPTER 17 IPX CONFIGURATION ...
Page 164: ...164 CHAPTER 19 QINQ CONFIGURATION ...
Page 172: ...172 CHAPTER 21 SHARED VLAN CONFIGURATION ...
Page 182: ...182 CHAPTER 22 PORT BASIC CONFIGURATION ...
Page 198: ...198 CHAPTER 24 PORT ISOLATION CONFIGURATION ...
Page 208: ...208 CHAPTER 25 PORT SECURITY CONFIGURATION ...
Page 224: ...224 CHAPTER 27 DLDP CONFIGURATION ...
Page 232: ...232 CHAPTER 28 MAC ADDRESS TABLE MANAGEMENT ...
Page 240: ...240 CHAPTER 29 CENTRALIZED MAC ADDRESS AUTHENTICATION CONFIGURATION ...
Page 280: ...280 CHAPTER 30 MSTP CONFIGURATION ...
Page 348: ...348 CHAPTER 35 IS IS CONFIGURATION ...
Page 408: ...408 CHAPTER 39 802 1X CONFIGURATION ...
Page 412: ...412 CHAPTER 40 HABP CONFIGURATION ...
Page 422: ...422 CHAPTER 41 MULTICAST OVERVIEW ...
Page 426: ...426 CHAPTER 42 GMRP CONFIGURATION ...
Page 480: ...480 CHAPTER 47 PIM CONFIGURATION ...
Page 506: ...506 CHAPTER 48 MSDP CONFIGURATION ...
Page 552: ...552 CHAPTER 51 TRAFFIC ACCOUNTING CONFIGURATION ...
Page 570: ...570 CHAPTER 53 HA CONFIGURATION ...
Page 582: ...582 CHAPTER 54 ARP CONFIGURATION SwitchA arp protective down recover interval 200 ...
Page 622: ...622 CHAPTER 58 DHCP RELAY AGENT CONFIGURATION ...
Page 684: ...684 CHAPTER 61 QOS CONFIGURATION ...
Page 718: ...718 CHAPTER 63 CLUSTER ...
Page 738: ...738 CHAPTER 67 UDP HELPER CONFIGURATION ...
Page 752: ...752 CHAPTER 69 RMON CONFIGURATION ...
Page 772: ...772 CHAPTER 70 NTP CONFIGURATION ...
Page 796: ...796 CHAPTER 72 FILE SYSTEM MANAGEMENT ...
Page 802: ...802 CHAPTER 73 BIMS CONFIGURATION ...
Page 814: ...814 CHAPTER 74 FTP AND TFTP CONFIGURATION ...
Page 830: ...830 CHAPTER 75 INFORMATION CENTER ...
Page 836: ...836 CHAPTER 76 DNS CONFIGURATION ...
Page 852: ...852 CHAPTER 77 BOOTROM AND HOST SOFTWARE LOADING ...
Page 858: ...858 CHAPTER 78 BASIC SYSTEM CONFIGURATION DEBUGGING ...