HP 5500 Ei 5500 Si Switch Series Configuration Guide

 
 
332 
 Ste
p Command Remarks 
4.
  Advertise a default route to 
an IPv6 peer or peer 
group.  peer { ipv6-group-name 
| ipv6-address  } 
default-route-advertise  [ route-policy 
route-policy-name  ]  Not advertised by default. 
With the peer 
default-route-advertise
 
command executed, the 
local router advertises a 
default route with itself as 
the next hop to the specified 
IPv6 peer or peer group, 
regardless of whether the 
default route is available in 
the routing table. 
 
Configuring...

 
 
333 
  To configure inbound route filtering: 
 
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter BGP view. 
bgp as-number   N/A 
3.  Enter IPv6 address family 
view.   ipv6-family 
N/A 
4.  Configure inbound route 
filtering.  filter-policy 
{ acl6-number  | 
ipv6-prefix  ipv6-prefix-name  } 
import   Not configured by default. 
5.
  Apply a routing policy to 
routes from an IPv6 peer or 
peer group.  peer {
 ipv6-group-name  | 
ipv6-address  } route-policy 
route-policy-name...

 
 
334 
 
Configuring route dampening  
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter BGP view. 
bgp as-number   N/A 
3.  Enter IPv6 address family 
view.   ipv6-family 
N/A 
4.  Configure IPv6 BGP route 
dampening parameters.  dampening
 [ half-life-reachable 
half-life-unreachable reuse suppress ceiling  | 
route-policy  route-policy-name  ]*  Optional. 
Not configured by 
default. 
 
Configuring IPv6 BGP route attributes 
Use the following IPv6 BGP route attributes to...

 
 
335 
 Ste
p Command Remarks 
1.
  Enter system view. 
system-view  N/A 
2.  Enter BGP view. 
bgp as-number   N/A 
3.  Enter IPv6 address family 
view.  ipv6-family 
N/A 
4.  Configure preference values 
for IPv6 BGP external, 
internal, and local routes.  preference
 { external-preference 
internal-preference 
local-preference  | route-policy  
route-policy-name  } Optional. 
The default preference values of 
external, internal, and local routes are 
255, 255, and 130. 
5.
  Configure the default...

 
 
336 
 Ste
p Command Remarks 
3.
  Enter IPv6 address family 
view.  ipv6-family 
N/A 
4.  Allow the local AS number to 
appear in AS_PATH of routes 
from a peer or peer group 
and specify the repeat times.  peer { ipv6-group-name 
| 
ipv6-address  } allow-as-loop  
[ number  ]  Optional. 
Not allowed by default. 
5.
  Specify a fake AS number for 
an IPv6 peer or peer group.  peer {
 ipv6-group-name  | 
ipv6-address  } fake-as  as-number  Optional. 
Not specified by default. 
6.
  Disable IPv6 BGP...

 
 
337 
 
Configuration prerequisites 
Before you configure IPv6 BGP timers, complete the following tasks:  
•  Enable IPv6. 
•   Configure IPv6 BGP basic functions. 
Configuring IPv6 BGP timers  
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter BGP view.  
bgp as-number   N/A 
3.  Enter IPv6 address family view. ipv6-family  N/A 
4.
  Configure IPv6 BGP timers.  
• Specify keepalive interval and 
holdtime: 
timer  keepalive  keepalive  hold 
holdtime  
• Configure keepalive...

 
 
338 
 Ste
p Command Remarks 
1.
  Enter system view. 
system-view  N/A 
2.  Enter BGP view. 
bgp as-number   N/A 
3.  Enter IPv6 address family 
view.  ipv6-family 
N/A 
4.  Save all routes from an IPv6 
peer or peer group, not letting 
them go through the inbound 
policy.  peer {
 ipv6-group-name  | ipv6-address } 
keep-all-routes  Optional. 
Not saved by default.  
If the peer 
keep-all-routes  
command is used, all routes 
from the peer or peer group 
are saved regardless of 
whether the filtering...

 
 
339 
 Ste
p Command Remarks 
5.
  Enable the non-standard ORF 
capability for a BGP peer or 
peer group.  peer 
{ group-name  | 
ipv6-address }  capability-advertise 
orf non-standard  Optional. 
By default, standard BGP ORF 
capability defined in RFC 5291 
and RFC 5292 is supported.  
6.
  Enable the ORF IP prefix 
negotiation capability for a 
BGP peer or peer group.  peer { group-name
 |  ip-address  | 
ipv6-address  } capability-advertise 
orf ip-prefix  { both  | receive  | 
send  }  Not...

 
 
340 
 
Setting the DSCP value for IPv6 BGP packets 
An IPv6 packet header contains an 8-bit Traffic class field. This field identifies the service type of IPv6 
packets. As defined in RFC 2474, the first six bits set the Differentiated Services Code Point (DSCP) value 
and the last two bits are reserved. Network devices use the DSCP value as a reference to determine the 
packet priority for transmission. 
You can set the DSCP value for IPv6 BGP packets. 
To set the DSCP value for packets sent  to an...

 
 
341 
 Ste
p Command Remarks 
1.
  Enter system view. 
system-view  N/A 
2.  Enter BGP view. 
bgp as-number   N/A 
3.  Enter IPv6 address family 
view.  ipv6-family 
N/A 
4.  Enable MD5 authentication 
when establishing a TCP 
connection to the peer or peer 
group.  peer { ipv6-group-name
 | 
ipv6-address } password  { cipher | 
simple  } password   Not enabled by default. 
 
Applying an IPsec policy to an IPv6 BGP peer or peer group 
To protect routing information and defend attacks, IP
v6 BGP can...