Operation Manual – IPv4 Routing
H3C S3610&S5510 Series Ethernet Switches
Chapter 4 IS-IS Configuration
4-15
CLV Code
Name
PDU Type
9 LSP
Entries
SNP
10
Authentication Information
IIH, LSP, SNP
128
IP Internal Reachability Information
LSP
129
Protocols Supported
IIH, LSP
130
IP External Reachability Information
L2 LSP
131
Inter-Domain Routing Protocol
Information
L2 LSP
132
IP Interface Address
IIH, LSP
Code 1 to 10 of CLV are defined in ISO 10589 (code 3 and 5 are not shown in the table),
and others are defined in RFC 1195.
4.1.5 IS-IS Features Supported
I. Multiple instances and processes
IS-IS supports multiple instances and processes. Multiple processes allow a
designated IS-IS process to work in concert with a group of interfaces. This means that
a router can run multiple IS-IS processes, and each process corresponds to a unique
group of interfaces.
For routers supporting VPN, each IS-IS process is associated with a designated VPN
instance. Thus, the VPN instance is also associated with interfaces corresponding to
the process.
II. IS-IS Graceful Restart
Note:
For detailed GR information, refer to
BFD
-
GR Configuration
.
After an IS-IS GR Restarter restarts IS-IS, it needs to complete the following two tasks
to synchronize the LSDB with its neighbors.
z
To obtain effective IS-IS neighbor information without changing adjacencies.
z
To obtain the LSDB contents.
After the restart, the GR Restarter will send an OSPF GR signal to its neighbors to keep
the adjacencies. After receiving the responses from neighbors, the GR Restarter can
restore the neighbor table.
