ZXR10 GER (V2.6.03) General Excellent Router User Manual Volume-I
172
Confidential and Proprietary Information of ZTE CORPORATION
is between 1 and 15 for a valid route, or 16 for an
unreachable route.
Note:
Up to 25 occurrences of AFI, Address and Metric Fields
are permitted in single IP RIP Packet.
RIPv2 Packet Format
RIP 2 specifications (described in RFC 1723) allows more
information to be included in RIP packets and provides a simple
authentication mechanism that is not supported by RIP.
Figure 84 shows IP RIP 2 packet format.
F
I G U R E
8 4
I
P
R
I P V
2
P
A C K E T
Following descriptions summarize IP RIP 2 packet format fields
illustrated in Figure 84.
Command
—indicates whether the packet is a request or a
response. The request asks that a router send all or a part of
its routing table. The response can be an unsolicited regular
routing update or a reply to a request. Responses contain
routing table entries. Multiple RIP packets are used to convey
information from large routing tables.
Version
—Specifies RIP version used. In a RIP packet
implementing any of the RIP 2 fields or using authentication,
this value is set to 2.
Unused
—has a value set to zero.
Address-family identifier (AFI)
—Specifies the address
family used. RIPv2’s AFI field functions identically to RFC
1058 RIP’s AFI field, with one exception: If the AFI for the
first entry in the message is 0xFFFF, the remainder of the
entry contains authentication information. Currently, the only
authentication type is simple password.
Route tag
—provides a method for distinguishing between
internal routes (learned by RIP) and external routes (learned
from other protocols).
IP address
—specifies the IP address for the entry.
Subnet mask
—contains the subnet mask for the entry. If
this field is zero, no subnet mask has been specified for the
entry.
Next hop
—indicates the IP address of the next hop to which
packets for the entry should be forwarded.
Simple
Authentication
Mechanism
Содержание ZXR10 GER
Страница 4: ...This page is intentionally blank ...
Страница 14: ...This page is intentionally blank ...
Страница 22: ......
Страница 24: ......
Страница 140: ......
Страница 206: ......
Страница 232: ......
Страница 248: ......
Страница 294: ......
Страница 326: ......
Страница 386: ......
Страница 407: ...Tables Confidential and Proprietary Information of ZTE CORPORATION 385 Table 426 Debug Ip Msdp Command 358 ...
Страница 408: ......