Tag: <span>BGP</span>

We are going to configure VRRP between the 2 pairs of routers and the expected behavior, setup as per below: Setup: 1. Routers PE1,PE2,FW1 and FW2 are connected to the same Layer 2 Switch and belongs to the same VLAN. 2. L2-Switch will just function as Layer 2 switch (subnet 192.168.2.240/29) 3. VRRP is configured between PE1 & PE2 3. VRRP is configured between FW1 & FW2   Fig.1 IP & VRRP Configuration: L2-SWITCH L2-SWITCH#conf t a. Setup access VLAN…

Cisco Networking

Static Route Configuration Examples in Juniper for BGP aggregated prefix advertisements In order to advertise the aggregated routes (and default routes) via BGP, it should exists in the routing table, that’s the #1 rule. If these summarized routes (/16) are not existing and only smaller subnets are learned via the IGP(e.g. OSPF,IS-IS), then configure static route and next hop e.g. Null0. Configuration: routing-options { graceful-restart; rib inet6.0 { static { route fd41:c8be:2153:f400::/64 discard; route ::0/0 { discard; no-install; static {…

Juniper

Originating BGP advertisement can be configured to any iBGP peer router. Here’s the sample configuration of originating BGP routes and community tagging in Juniper. Assuming these are the summarized prefixes that you want to advertise via BGP. 111.111.0.0/16 222.222.0.0/16 Configuration: routing-options { graceful-restart; router-id 1.1.1.1; autonomous-system 11111; protocols { bgp { group RR-IBGP { type internal; description RR-IPv4; local-address 192.168.100.6; family inet { unicast; } authentication-key “$1$N3tBioBwfdFsFVwgoGDh.3C0oL”; ## SECRET-DATA export bgp-statement; neighbor 192.168.100.5 { description iBGP to Route Reflector; }…

Juniper

The “traceoptions” statement in Juniper let you debug BGP protocol issues. If cannot connect BGP peering, you can set the “traceoptions” to understand further about the issue. 1. Configure “traceoptions” and name the log as debug-bgp set protocols bgp group BGP-GROUP1 traceoptions file debug-bgp set protocols bgp group BGP-GROUP1traceoptions file size 1m set protocols bgp group BGP-GROUP1 traceoptions file files 2 set protocols bgp group BGP-GROUP1 traceoptions flag all commit where: max trace file size = 1m max trace files…

Juniper

Static Route Configuration Examples in Cisco (IOS-XR)  for BGP aggregated prefix advertisements In order to advertise the aggregated routes (and default routes) via BGP, it should exists in the routing table, that’s the #1 rule. If these summarized routes (/16) are not existing and only smaller subnets are learned via the IGP(e.g. OSPF,IS-IS), then configure static route and next hop e.g. Null0. Configuration: router static address-family ipv4 unicast 0.0.0.0/0 Null0 172.16.0.0/16 Null0 address-family ipv6 unicast ::/0 Null0 fd41:c8be:2153:f400::/64 Null0 In…

Cisco

Originating BGP advertisement can be configured to any iBGP peer router. Here’s the sample configuration of originating BGP routes and community tagging in Cisco Assuming these are the summarized prefixes that you want to advertise via BGP. 111.111.0.0/16 222.222.0.0/16 Configuration: Configure the prefix-set prefix-set SITE1 111.111.0.0/16, 222.222.0.0/16 end-set 2. Configure the community route-policy bgp-statement if destination in SITE1 then set community (12345:111) endif end-policy 3. Configure BGP router bgp 11111 nsr bgp router-id 1.1.1.1 bgp graceful-restart address-family ipv4 unicast network…

Cisco