HP 5500 Ei 5500 Si Switch Series Configuration Guide
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Step Command Description
4. Enable default route
redistribution into the IPv6
MBGP routing table. default-route imported Optional.
By default, default route
redistribution is not allowed.
If the default-route imported
command is not configured, using
the import-route command cannot
redistribute any IGP default route.
5. Enable route redistribution
from another routing protocol. import-route
protocol [ process-id
[ med med-value | route-policy
route-policy-name ] * ]...](http://img.usermanuals.tech/thumb/36/58909/w64_hp-5500-ei-5500-si-switch-series-configuration-guide-1552.png "Page 1553
417
Step Command Description
4. Enable default route
redistribution into the IPv6
MBGP routing table. default-route imported Optional.
By default, default route
redistribution is not allowed.
If the default-route imported
command is not configured, using
the import-route command cannot
redistribute any IGP default route.
5. Enable route redistribution
from another routing protocol. import-route
protocol [ process-id
[ med med-value | route-policy
route-policy-name ] * ]...")
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418
Configuring outbound IPv6 MBGP 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 MBGP address
family view. ipv6-family multicast
N/A
4. Configure outbound IPv6
MBGP route filtering.
• Configure the filtering of outgoing
routes:
filter-policy { acl6-number |
ipv6-prefix ipv6-prefix-name } export
[ protocol process-id ]
• Specify an IPv6 ACL to filter routes
advertised to a peer or a...](http://img.usermanuals.tech/thumb/36/58909/w64_hp-5500-ei-5500-si-switch-series-configuration-guide-1553.png "Page 1554
418
Configuring outbound IPv6 MBGP 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 MBGP address
family view. ipv6-family multicast
N/A
4. Configure outbound IPv6
MBGP route filtering.
• Configure the filtering of outgoing
routes:
filter-policy { acl6-number |
ipv6-prefix ipv6-prefix-name } export
[ protocol process-id ]
• Specify an IPv6 ACL to filter routes
advertised to a peer or a...")
415
Task Remarks
optimizing IPv6
MBGP networks Enabling the IPv6 MBGP orf capability
Optional
Configuring the maximum number of equal-cost routes for
load-balancing Optional
Configuring a large
scale IPv6 MBGP
network Configuring an IPv6 MBGP peer group
Optional
Configuring IPv6 MBGP community Optional
Configuring an IPv6 MBGP route reflector Optional
Configuring basic IPv6 MBGP functions
Configuration prerequisites
IPv6 MBGP is an application of multiprotocol BGP. Before you configure IPv6 MBGP, complete the
following tasks:
• Enable IPv6.
• Configure network layer addresses for interfaces.
• Complete BGP basic configuration.
Configuring an IPv6 MBGP peer
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enable BGP and enter BGP view.
bgp as-number Not enabled by default.
3. Enter IPv6 address family view. ipv6-family N/A
4. Specify an IPv6 BGP peer and its AS
number. peer
ipv6-address as-number
as-number Not configured by default.
5.
Enter IPv6 MBGP address family
view. ipv6-family multicast
N/A
6. Enable the IPv6 MBGP peer. peer ipv6-address enable Not enabled by default.
Configuring a preferred value for routes from a peer or a peer
group
If you both reference a routing policy and use the command peer { ipv6-group-name | ipv6-address }
preferred-value value to set a preferred value for routes from a peer or a peer group, the routing policy
sets the specified preferred value for the routes that match it. Other routes that do not match the routing
policy use the value set through the command. If the preferred value in the routing policy is 0, the routes
that match it will also use the value set through the peer { ipv6-group-name | ipv6-address }
preferred-value value command. To learn how to use a routing policy to set a preferred value, see the
peer { ipv6-group-name | ipv6-address } route-policy route -policy-name { import | export } command
and the apply preferred-value preferred-value command. For more information about these commands,
see Layer 3—IP Routing Command Reference .
416
To configure a preferred value for routes from a peer or a peer group:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view. bgp as-number N/A
3. Enter IPv6 MBGP address
family view. ipv6-family multicast
N/A
4. Specify a preferred value for
routes received from the IPv6
MBGP peer or the peer
group. peer {
ipv6-group-name |
ipv6-address } preferred-value
value Optional.
The preferred value defaults to 0.
Controlling route distribution and reception
Configuration prerequisites
Before you configure this task, complete the following tasks:
•
Enable IPv6.
• Configure basic IPv6 MBGP functions.
Injecting a local IPv6 MBGP route
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view.
bgp as-number N/A
3. Enter IPv6 MBGP address
family view. ipv6-family multicast
N/A
4. Inject a network into the IPv6
MBGP routing table. network
ipv6-address prefix-length
[ route-policy route-policy-name | short-cut ]
Not injected by default.
Configuring IPv6 MBGP route redistribution
Step Command Description
1. Enter system view.
system-view N/A
2. Enter BGP view. bgp as-number N/A
3. Enter IPv6 MBGP multicast
address family view. ipv6-family multicast
N/A
417
Step Command Description
4. Enable default route
redistribution into the IPv6
MBGP routing table. default-route imported Optional.
By default, default route
redistribution is not allowed.
If the default-route imported
command is not configured, using
the import-route command cannot
redistribute any IGP default route.
5. Enable route redistribution
from another routing protocol. import-route
protocol [ process-id
[ med med-value | route-policy
route-policy-name ] * ]
Not enabled by default.
Configuring IPv6 MBGP route summarization
To reduce the routing table size on medium and large BGP networks, you must configure route
summarization on IPv6 MBGP routers. BGP supports only manual summarization of IPv6 multicast routes.
To configure IPv6 MBGP route summarization:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view.
bgp as-number N/A
3. Enter IPv6 MBGP
address family view. ipv6-family multicast
N/A
4. Configure manual
route summarization. aggregate
ipv6-address prefix-length [ as-set |
attribute-policy route-policy-name |
detail-suppressed | origin-policy route-policy-name
| suppress-policy route-policy-name ]* Not configured by
default.
Advertising a default route to a peer or peer group
Step
Command Remarks
1. Enter system view. system-view N/A
2. Enter BGP view.
bgp as-number N/A
3. Enter IPv6 MBGP address
family view. ipv6-family multicast
N/A
4. Advertise a default route to an
IPv6 MBGP 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 router sends a
default route with the next hop as itself
to the specified IPv6 MBGP peer or the
specified peer group, regardless of
whether the default route is available in
the routing table.
418
Configuring outbound IPv6 MBGP 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 MBGP address
family view. ipv6-family multicast
N/A
4. Configure outbound IPv6
MBGP route filtering.
• Configure the filtering of outgoing
routes:
filter-policy { acl6-number |
ipv6-prefix ipv6-prefix-name } export
[ protocol process-id ]
• Specify an IPv6 ACL to filter routes
advertised to a peer or a peer group:
peer { ipv6-group-name |
ipv6-address } filter-policy
acl6-number export
• Specify an AS path ACL to filter IPv6
MBGP routing information advertised
to a peer or a peer group:
peer { ipv6-group-name |
ipv6-address } as-path-acl
as-path-acl-number export
• Specify an IPv6 prefix list to filter
routes advertised to a peer or a peer
group:
peer { ipv6-group-name |
ipv6-address } ipv6-prefix
ipv6-prefix-name export
• Apply a routing policy to routes
advertised to a peer or a peer group:
peer { ipv6-group-name |
ipv6-address } route-policy
route -policy-name export Use any of the commands.
No filtering is configured by
default.
You can configure filter
policies as required. If you
configure multiple filter
policies, they are applied in
the following order:
5.
filter-policy export
6. peer filter-policy export
7. peer as-path-acl export
8. peer ipv6-prefix export
9. peer route-policy export
A filter policy can be applied
only after the previous one is
passed. Routing information
can be advertised only after
passing all the configured filter
policies.
NOTE:
• Members of an IPv6 MBGP peer
group must have the same outbound route filtering policy as the peer
group.
• IPv6 BGP advertises the redistributed routes that pass the specified policy to the IPv6 MBGP peer.
Configuring inbound IPv6 MBGP 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 MBGP
address family view. ipv6-family multicast
N/A
419
Step Command Remarks
4. Configure IPv6 MBGP
inbound route filtering.
• Configure inbound route filtering:
filter-policy { acl6-number | ipv6-prefix
ipv6-prefix-name } import
• Apply a routing policy to routes from a
peer or a peer group:
peer { ipv6-group-name | ipv6-address }
route-policy route -policy-name import
• Specify an IPv6 ACL to filter routes from a
peer or a peer group:
peer { ipv6-group-name | ipv6-address }
filter-policy acl6-number import
• S p e ci f y a n A S p a t h AC L t o f i l t e r I P v 6 B G P
routing information from a peer or a peer
group:
peer { ipv6-group-name | ipv6-address }
as-path-acl as-path-acl-number import
• Specify an IPv6 prefix list to filter routes
from a peer or a peer group:
peer { ipv6-group-name | ipv6-address }
ipv6-prefix ipv6-prefix-name import Use any of the commands
By default, advertised routes
are not filtered.
You can configure a filtering
policy as required.
If you configure several
filtering policies, they are
applied in the following
sequence:
5.
filter-policy import
6. peer filter-policy import
7. peer as-path-acl import
8. peer ip-prefix import
9. peer route-policy import
A filter policy can be applied
only after the previous one is
passed. Routing information
can be received only after
passing all the configured filter
policies.
10. Specify the upper limit of
prefixes that can be
imported from a peer or
a peer group. peer {
ipv6-group-name | ipv6-address }
route-limit limit [ percentage ] Optional.
The number is unlimited by
default.
NOTE:
A peer can have an inbound route filtering policy that is different from the policy of the peer group that it
belongs to. That is, peer group members can have different inbound route filtering policies.
Configuring IPv6 MBGP 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 MBGP address
family view. ipv6-family multicast
N/A
4. Configure IPv6 MBGP 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 MBGP route attributes
This section describes how to use IPv6 MBGP route attr ibutes to affect IPv6 MBGP route selection. IPv6
MBGP route attributes involve:
420
• IPv6 MBGP protocol preference
• Default LOCAL_PREF attribute
• MED attribute
• NEXT_HOP attribute
• AS_PATH attribute
Configuration prerequisites
Before you configure IPv6 MBGP route attributes, complete the following tasks:
• Enable IPv6.
• Configure basic IPv6 MBGP functions.
Configuring IPv6 MBGP route preferences
Step Command Remarks
1. Enter system view.
system-view N/A
2.
Enter BGP view.
bgp as-number N/A
3. Enter IPv6 MBGP address
family view. ipv6-family multicast
N/A
4. Configure preferences for
external, internal, and local
IPv6 MBGP 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,
respectively.
Configuring the default local preference
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view. bgp as-number N/A
3. Enter IPv6 MBGP address
family view. ipv6-family multicast
N/A
4. Set the default local
preference. default local-preference
value
Optional.
By default, the default local
preference is 100.
Configuring the MED attribute
Step
Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view.
bgp as-number N/A
421
Step Command Remarks
3. Enter IPv6 MBGP address
family view. ipv6-family multicast
N/A
4. Configure a default MED
value. default med
med-value
Optional.
By default, the default
med-value is
0.
5. Enable the comparison of the
MED for routes from different
ASs. compare-different-as-med
Optional.
Not enabled by default.
6.
Enable the comparison of the
MED for routes from each AS. bestroute compare-med Optional.
Disabled by default.
7. Enable the comparison of the
MED for routes from
confederation peers. bestroute med-confederation
Optional.
Disabled by default.
Configuring the next hop attribute
You can use the peer next-hop-local command to specify the local router as the next hop of routes sent
to a n I P v 6 mu l t ic as t I BG P p e e r o r a p e e r g ro u p. I f l o a d b a l a n ci ng i s c on fig u re d, t h e ro u te r s pe ci fies i t s e l f
a s t h e n ex t h o p o f ro u te s s e nt t o t h e I P v 6 mu l t ic as t I BG P p e e r o r t h e p e e r g ro u p re g a rd l e s s of wh e t h e r t h e
peer next-hop-local command is configured.
In a third-party next-hop network, that is, the local router has two IPv6 multicast EBGP peers in a
broadcast network, the router does not specify itself as the next hop of routes sent to the EBGP peers by
default.
To specify the router as the next hop of routes sent to a peer or a peer group:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter BGP view.
bgp as-number N/A
3. Enter IPv6 MBGP address
family view. ipv6-family multicast
N/A
4. Configure the router as the
next hop of routes sent to the
peer or the peer group. peer {
ipv6-group-name |
ipv6-address } next-hop-local
Optional.
By default, IPv6
MBGP specifies
the local router as the next hop for
routes sent to an EBGP peer or a
peer group, but not for routes sent
to an IBGP peer or a peer group.
Configuring the as_path attribute
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view. bgp as-number N/A
3. Enter IPv6 MBGP address
family view. ipv6-family multicast
N/A
422
Step Command Remarks
4. Allow the local AS number to
appear in the as-path of
routes from a peer or a peer
group and specify the number
of times that the local AS
number can appear in the
as-path of routes from the peer
or the peer group. peer { ipv6-group-name
|
ipv6-address } allow-as-loop
[ number ]
Optional.
Not allowed by default.
5. Disable IPv6 MBGP from
considering the as_path
during best route selection. bestroute as-path-neglect
Optional.
Enabled by default.
6. Configure updates to a peer
or a peer group to carry only
the public AS number. peer { ipv6-group-name
|
ipv6-address } public-as-only Optional.
By default, outbound IPv6 MBGP
updates can carry private AS
numbers.
Tuning and optimizing IPv6 MBGP networks
Configuration prerequisites
Before you tune and optimize an OSPF network, complete the following tasks:
• Enable IPv6.
• Configure basic IPv6 MBGP functions.
Configuring IPv6 MBGP soft reset
After you modify a route selection policy, you must reset IPv6 MBGP connections to make the new one
take effect.
The current IPv6 MBGP implementation supports the route-refresh feature that enables dynamic route
refresh without terminating IPv6 MBGP connections.
If a peer that does not support route refresh exists in the network, you must configure the peer
keep-all-routes command to save all routes from the peer. When the routing policy is changed, the
system will update the IPv6 MBGP routing table and apply the new policy.
Performing soft reset through route refresh
If the peer is enabled with route refresh, when the IPv6 MBGP route selection policy is modified on a
router, the router advertises a route -refresh message to its IPv6 MBGP peers, which resend their routing
information to the router after they receive the message. Therefore, the local router can perform dynamic
route update and apply the new policy with out terminating IPv6 MBGP connections.
To configure IPv6 MBGP soft reset through route refresh:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter BGP view.
bgp as-number N/A
423
Step Command Remarks
3. Enter IPv6 address family
view. ipv6-family
N/A
4. Enable IPv6 BGP route refresh
for a peer or a peer group. peer { ipv6-group-name
|
ipv6-address } capability-advertise
route-refresh Optional.
Enabled by default.
Performing soft reset manually
If the peer does not support route refresh, you can use the peer keep-all-routes command to save all the
route updates from the peer, and then use the refresh bgp ipv6 multicast command to soft-reset IPv6
MBGP connections to refresh the IPv6 MBGP routing table and apply the new policy without terminating
IPv6 MBGP connections.
To perform soft reset manually:
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. Enter IPv6 MBGP address
family view. ipv6-family multicast
N/A
5. Keep all routes from a peer or
a peer group regardless of
whether they pass the
inbound filtering policy. peer {
ipv6-group-name | ipv6-address }
keep-all-routes Not kept by default.
6. Perform soft reset manually. refresh bgp
ipv6 multicast { all |
ipv6-address | group ipv6-group-name |
external | internal } { export | import } Optional.
Enabling the IPv6 MBGP orf capability
The BGP Outbound Route Filter (ORF) feature enables a BGP speaker to send a set of ORFs to its BGP
peer through route-refresh messages. The peer then applies the ORFs, in addition to its local routing
policies (if any), to filter updates to the BGP spea ker, thus reducing the number of exchanged update
messages and saving network resources.
After you enable the ORF capability, the local BGP router negotiates the ORF capability with the BGP
peer through open messages. That is, the router determines whether to carry ORF information in
messages, and if yes, whether to carry non-standar d ORF information in the packets. After completing
the negotiation process and establishing the neighbor ing relationship, the BGP router and its BGP peer
can exchange ORF information through specific route-refresh messages.
For the parameters configured on both si des for ORF capability negotiation, see Tabl e 12.
T
o enable the IPv6 MBGP ORF capability:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view.
bgp as-number N/A
424
Step Command Remarks
3. Enter IPv6 address family
view. ipv6-family
N/A
4. Enable BGP route refresh for a
peer or a peer group. peer { group-name
|
ipv6-address } capability-advertise
route-refresh Optional.
Enabled by default.
If this feature is not enabled, you
must configure this command.
5.
Enable the non-standard ORF
capability for a BGP peer or a
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.
If this feature is not enabled, you
must configure this command.
6.
Enter IPv6 MBGP address
family view. ipv6-family multicast
N/A
7. Enable the ORF IP prefix
negotiation capability for a
BGP peer or a peer group. peer { group-name
|
ipv6-address } capability-advertise
orf ip-prefix { both | receive |
send } Not enabled by default.
Table 12
Description of the send, receive, and bo th parameters and the negotiation result
Local
parameter Peer parameter Negotiation result
send • receive
• both The ORF sending capability is enabled locally and the ORF
receiving capability is enabled on the peer.
receive •
send
• both The ORF receiving capability is enabled locally and the
ORF sending capability is enabled on the peer.
both both
Both the ORF sending and receiving capabilities are
enabled locally and on the peer, respectively.
Configuring the maximum number of equal-cost routes for
load-balancing
Step
Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view. bgp as-number N/A
3. Enter IPv6 MBGP address
family view. ipv6-family multicast
N/A
4. Configure the maximum
number of equal-cost routes
for load balancing. balance
number By default, load ba lancing is disabled.