Shulou(Shulou.com)06/01 Report--

Route classification:

V directly connected routing: routers are connected to each other and configured with the same network segment address to communicate.

V static routing: manually configure route entries to enable different network segments to communicate.

V default route: manually configure a route that matches all route entries in a single direction, there can be only one default route on a router, and the default route is a static route.

V dynamic routing: dynamically obtain routing entries to enable different network segments to communicate.

Route identification: C for directly connected, S for static route, and S* for default route.

CISCO Cisco routing commands:

Command

Description

(config) # ip route destination IP mask next hop address

Create a static route entry

(config) # ip route 0.0.0.0 0.0.0.0 next hop address

Create a default route entry

# show ip route

View route entries

Note: the next hop address is the routing peer interface address.

Huawei H3C routing commands:

Command

Description

[huawei] ip route-static destination IP mask next hop address

Create a static route entry

[huawei] ip route-static 0.0.0.0 0.0.0.0 next hop address

Create a default route entry

[huawei] display ip routing-table

View route entries

Layer 3 switches have the functions of switches and routers, and have the advantages of routing once and forwarding multiple times.

Three-layer switching architecture: traditional old-fashioned MSL multilayer switching architecture, fast forwarding architecture based on CEF.

CEF has two information tables: the forwarding information base FIB (routing table) and the adjacency table (MAC table).

Layer 3 switching implements a flexible virtual interface mechanism, and all interfaces on layer 3 switches are layer 2 interfaces by default.

Virtual interface: as the name implies, it is a logical interface, a virtual interface.

CISCO Cisco layer 3 switching commands:

Command

Description

(config) # ip routing

Enable routing function

(config) # no ip routing

Turn off the routing function

(config) # interface vlan 10 (API name)

Enter the virtual interface

(config-if) # no switchport

Promote a physical interface to a layer 3 interface

# clear port-security dynamic

Clear the MAC address of the interface

Huawei H3C layer 3 switching command:

Command

Description

[huawei] interface vlanif 10

Enter the virtual interface

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