110
C
HAPTER
6: IP R
OUTING
P
ROTOCOL
O
PERATION
Enabling RIP-2 Route Aggregation
Route aggregation means that different subnet routes in the same natural
network can be aggregated into one natural mask route for transmission when
they are sent to other networks. Route aggregation can be performed to reduce
the routing traffic on the network as well as to reduce the size of the routing
table.
RIP-1 only sends the routes with natural mask, that is, it always sends routes in the
route aggregation form.
RIP-2 supports subnet mask and classless inter-domain routing. To advertise all the
subnet routes, the route aggregation function of RIP-2 can be disabled.
Perform the following configurations in RIP View.
By default, RIP-2 uses the route aggregation function.
Setting RIP-2 Packet Authentication
RIP-1 does not support packet authentication. However, you can configure packet
authentication on RIP-2 interfaces.
RIP-2 supports two authentication modes:
■
Simple authentication — This mode does not ensure security. The key is not
encrypted and can be seen in a network trace, so simple authentication should
not be applied when there are high security requirements.
■
MD5 authentication — This mode uses two packet formats. One format
follows RFC1723, and the other follows RFC2082.
Perform the following configuration in Interface View:
The
usual
packet format follows RFC1723 and
nonstandard
follows RFC2082.
Configuring Split Horizon
Split horizon means that the route received through an interface will not be sent
through this interface again. The split horizon algorithm can reduce the
Table 112
Enabling Route Aggregation
Operation
Command
Activate the automatic aggregation function of RIP-2
summary
Disable the automatic aggregation function of RIP-2
undo summary
Table 113
Setting RIP-2 Packet Authentication
Operation
Command
Configure RIP-2 simple authentication key
rip authentication-mode simple
password_string
Configure RIP-2 MD5 authentication with
packet type following RFC 1723
rip authentication-mode
md5
usual
key_string
Configure RIP-2 MD5 authentication with
packet type following RFC 2082
rip authentication-mode md5
nonstandard
key_string key_id
Cancel authentication of RIP-2 packet
undo rip authentication-mode
Summary of Contents for 400 Family
Page 12: ......
Page 16: ...14 ABOUT THIS GUIDE ...
Page 58: ...56 CHAPTER 2 PORT OPERATION ...
Page 68: ...66 CHAPTER 3 VLAN OPERATION ...
Page 98: ...96 CHAPTER 5 NETWORK PROTOCOL OPERATION ...
Page 124: ...122 CHAPTER 6 IP ROUTING PROTOCOL OPERATION ...
Page 156: ...154 CHAPTER 8 ACL CONFIGURATION ...
Page 218: ...216 CHAPTER 11 802 1X CONFIGURATION ...
Page 298: ...296 CHAPTER 13 PASSWORD CONTROL CONFIGURATION OPERATIONS ...
Page 336: ...334 APPENDIX B RADIUS SERVER AND RADIUS CLIENT SETUP ...