Advertise all static route except the default gateway with Juniper SRX firewallBGP remote-triggered blackhole (RTBH) filter for JuniperJunos: Policy-Statment and AS-PrependsQuagga not announcing external routes over ibgp sessionBGP Route installed in routing table seen as valid but not as bestBGP and Inter-VRF RoutingWhy there is no advertised route to a neighbor on Cisco ISR?vSRX : several public addresses on loopback interfacebird set bgp next hop self in filterHow does a route-map applied as outbound on a neighbor sees the redistributed ospf routes into bgp? Local or external?How does BGP decide which prefix to advertise out of the prefixes in the routing table?
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Advertise all static route except the default gateway with Juniper SRX firewall
BGP remote-triggered blackhole (RTBH) filter for JuniperJunos: Policy-Statment and AS-PrependsQuagga not announcing external routes over ibgp sessionBGP Route installed in routing table seen as valid but not as bestBGP and Inter-VRF RoutingWhy there is no advertised route to a neighbor on Cisco ISR?vSRX : several public addresses on loopback interfacebird set bgp next hop self in filterHow does a route-map applied as outbound on a neighbor sees the redistributed ospf routes into bgp? Local or external?How does BGP decide which prefix to advertise out of the prefixes in the routing table?
With the following policy, all static routes are advertised via BGP to my neighbor:
root@Nitrogen# show policy-options
policy-statement bgp-export-policy
term export-statics
from protocol static;
then accept;
root@Nitrogen# show routing-instances myinstance
instance-type virtual-router;
interface ...
routing-options
static
route 0.0.0.0/0 next-hop ...; # I don't want to send this route
route x.x.x.x next-hop st0.1;
route x.x.x.x next-hop st0.1;
route x.x.x.x next-hop st0.1;
...
autonomous-system XXX;
protocols
bgp
group mygroup
type external;
export bgp-export-policy;
neighbor XXX
peer-as XXX;
How could I advertise all static routes except the default 0.0.0.0/0 one? Or, if this is easier, how could I advertise all routes that use st0.1 as the next hop?
Thank you in advance for your help.
routing bgp juniper juniper-junos juniper-srx
asked yesterday
NakruleNakrule
19516
add a comment |
With the following policy, all static routes are advertised via BGP to my neighbor:
root@Nitrogen# show policy-options
policy-statement bgp-export-policy
term export-statics
from protocol static;
then accept;
root@Nitrogen# show routing-instances myinstance
instance-type virtual-router;
interface ...
routing-options
static
route 0.0.0.0/0 next-hop ...; # I don't want to send this route
route x.x.x.x next-hop st0.1;
route x.x.x.x next-hop st0.1;
route x.x.x.x next-hop st0.1;
...
autonomous-system XXX;
protocols
bgp
group mygroup
type external;
export bgp-export-policy;
neighbor XXX
peer-as XXX;
How could I advertise all static routes except the default 0.0.0.0/0 one? Or, if this is easier, how could I advertise all routes that use st0.1 as the next hop?
Thank you in advance for your help.
routing bgp juniper juniper-junos juniper-srx
asked yesterday
NakruleNakrule
19516
add a comment |
With the following policy, all static routes are advertised via BGP to my neighbor:
root@Nitrogen# show policy-options
policy-statement bgp-export-policy
term export-statics
from protocol static;
then accept;
root@Nitrogen# show routing-instances myinstance
instance-type virtual-router;
interface ...
routing-options
static
route 0.0.0.0/0 next-hop ...; # I don't want to send this route
route x.x.x.x next-hop st0.1;
route x.x.x.x next-hop st0.1;
route x.x.x.x next-hop st0.1;
...
autonomous-system XXX;
protocols
bgp
group mygroup
type external;
export bgp-export-policy;
neighbor XXX
peer-as XXX;
How could I advertise all static routes except the default 0.0.0.0/0 one? Or, if this is easier, how could I advertise all routes that use st0.1 as the next hop?
Thank you in advance for your help.
routing bgp juniper juniper-junos juniper-srx
asked yesterday
NakruleNakrule
19516
With the following policy, all static routes are advertised via BGP to my neighbor:
root@Nitrogen# show policy-options
policy-statement bgp-export-policy
term export-statics
from protocol static;
then accept;
root@Nitrogen# show routing-instances myinstance
instance-type virtual-router;
interface ...
routing-options
static
route 0.0.0.0/0 next-hop ...; # I don't want to send this route
route x.x.x.x next-hop st0.1;
route x.x.x.x next-hop st0.1;
route x.x.x.x next-hop st0.1;
...
autonomous-system XXX;
protocols
bgp
group mygroup
type external;
export bgp-export-policy;
neighbor XXX
peer-as XXX;
How could I advertise all static routes except the default 0.0.0.0/0 one? Or, if this is easier, how could I advertise all routes that use st0.1 as the next hop?
Thank you in advance for your help.
routing bgp juniper juniper-junos juniper-srx
routing bgp juniper juniper-junos juniper-srx
asked yesterday
NakruleNakrule
19516
asked yesterday
NakruleNakrule
19516
edited yesterday
Nakrule
asked yesterday
NakruleNakrule
19516
asked yesterday
NakruleNakrule
19516
asked yesterday
NakruleNakrule
19516
19516
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You need to add a term to your policy statement which explicitly rejects the default route then, and add that before the export-statics term:
policy-statement bgp-export-policy {
term reject-default
from
route-filter 0.0.0.0/0 through 0.0.0.0/32;
then reject;
term export-statics
from protocol static;
then accept;
Another, slightly more complex, but also more versatile way is to tag the routes you want to export with a chosen community, and then write an export policy which accepts only routes with that specific community and rejects all others:
routing-options
static
route 0.0.0.0/0 next-hop 192.0.2.1;
route x.x.x.x
next-hop st0.1;
community 64496:1000;
route x.x.x.x
next-hop st0.1;
community 64496:1000;
route x.x.x.x
next-hop st0.1;
community 64496:1000;
policy-statement bgp-export-policy
term export-routes
from
protocol static;
community 64496:1000;
then accept;
term reject
then reject;
Having an explicit reject policy at the end of your policy chain is always a good idea, regardless of how you would implement this.
answered yesterday
Teun Vink♦Teun Vink
12k53154
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You need to add a term to your policy statement which explicitly rejects the default route then, and add that before the export-statics term:
policy-statement bgp-export-policy {
term reject-default
from
route-filter 0.0.0.0/0 through 0.0.0.0/32;
then reject;
term export-statics
from protocol static;
then accept;
Another, slightly more complex, but also more versatile way is to tag the routes you want to export with a chosen community, and then write an export policy which accepts only routes with that specific community and rejects all others:
routing-options
static
route 0.0.0.0/0 next-hop 192.0.2.1;
route x.x.x.x
next-hop st0.1;
community 64496:1000;
route x.x.x.x
next-hop st0.1;
community 64496:1000;
route x.x.x.x
next-hop st0.1;
community 64496:1000;
policy-statement bgp-export-policy
term export-routes
from
protocol static;
community 64496:1000;
then accept;
term reject
then reject;
Having an explicit reject policy at the end of your policy chain is always a good idea, regardless of how you would implement this.
answered yesterday
Teun Vink♦Teun Vink
12k53154
add a comment |
You need to add a term to your policy statement which explicitly rejects the default route then, and add that before the export-statics term:
policy-statement bgp-export-policy {
term reject-default
from
route-filter 0.0.0.0/0 through 0.0.0.0/32;
then reject;
term export-statics
from protocol static;
then accept;
Another, slightly more complex, but also more versatile way is to tag the routes you want to export with a chosen community, and then write an export policy which accepts only routes with that specific community and rejects all others:
routing-options
static
route 0.0.0.0/0 next-hop 192.0.2.1;
route x.x.x.x
next-hop st0.1;
community 64496:1000;
route x.x.x.x
next-hop st0.1;
community 64496:1000;
route x.x.x.x
next-hop st0.1;
community 64496:1000;
policy-statement bgp-export-policy
term export-routes
from
protocol static;
community 64496:1000;
then accept;
term reject
then reject;
Having an explicit reject policy at the end of your policy chain is always a good idea, regardless of how you would implement this.
answered yesterday
Teun Vink♦Teun Vink
12k53154
add a comment |
You need to add a term to your policy statement which explicitly rejects the default route then, and add that before the export-statics term:
policy-statement bgp-export-policy {
term reject-default
from
route-filter 0.0.0.0/0 through 0.0.0.0/32;
then reject;
term export-statics
from protocol static;
then accept;
Another, slightly more complex, but also more versatile way is to tag the routes you want to export with a chosen community, and then write an export policy which accepts only routes with that specific community and rejects all others:
routing-options
static
route 0.0.0.0/0 next-hop 192.0.2.1;
route x.x.x.x
next-hop st0.1;
community 64496:1000;
route x.x.x.x
next-hop st0.1;
community 64496:1000;
route x.x.x.x
next-hop st0.1;
community 64496:1000;
policy-statement bgp-export-policy
term export-routes
from
protocol static;
community 64496:1000;
then accept;
term reject
then reject;
Having an explicit reject policy at the end of your policy chain is always a good idea, regardless of how you would implement this.
answered yesterday
Teun Vink♦Teun Vink
12k53154
You need to add a term to your policy statement which explicitly rejects the default route then, and add that before the export-statics term:
policy-statement bgp-export-policy {
term reject-default
from
route-filter 0.0.0.0/0 through 0.0.0.0/32;
then reject;
term export-statics
from protocol static;
then accept;
Another, slightly more complex, but also more versatile way is to tag the routes you want to export with a chosen community, and then write an export policy which accepts only routes with that specific community and rejects all others:
routing-options
static
route 0.0.0.0/0 next-hop 192.0.2.1;
route x.x.x.x
next-hop st0.1;
community 64496:1000;
route x.x.x.x
next-hop st0.1;
community 64496:1000;
route x.x.x.x
next-hop st0.1;
community 64496:1000;
policy-statement bgp-export-policy
term export-routes
from
protocol static;
community 64496:1000;
then accept;
term reject
then reject;
Having an explicit reject policy at the end of your policy chain is always a good idea, regardless of how you would implement this.
answered yesterday
Teun Vink♦Teun Vink
12k53154
edited yesterday
answered yesterday
Teun Vink♦Teun Vink
12k53154
answered yesterday
Teun Vink♦Teun Vink
12k53154
answered yesterday
Teun Vink♦Teun Vink
12k53154
12k53154
add a comment |
add a comment |
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