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5

Yes, this changed back in Junos 8.5. You must now explicitly configure lo0.0 (ideally as a passive interface) to advertise the network.


3

mDNS uses a link-local multicast address (224.0.0.251) that cannot be sent off-link, so you cannot route mDNS packets. RFC 5771: 4. Local Network Control Block (224.0.0/24) Addresses in the Local Network Control Block are used for protocol control traffic that is not forwarded off link. Examples of this type of use include OSPFIGP All Routers (224.0.0.5) [...


3

I can't answer you question particularly exactly because .i am not understanding you question but some points to clear your understanding Multiple routing protocols can run among different network s connecting each other by redistribution routes among various routing protocols.. Administrative distance value is used by layer3 devices to choose best routing ...


3

When two routing protocols are configured in router routing towards same destination . Router is designed to chosee routing protocol with least administrative distance (AD) value . In this scenario OSPF & EIGRP is configured . So router picks up EIGRP because it's AD value is 90 compared to OSPF AD value 110 . Upon chossing EIGRP protocal .Further to ...


2

What you want to do will not work the way you envision. You cannot have overlapping networks separated by layer-3 without an ugly workaround, e.g. NAT. The problem with that is NAT will break OSPF, among other things. To use the same network and OSPF, you would need to bridge the two sites at layer-2, and that can cause other problems, such as creating ...


2

If you have a fully switched ring MSTP/RSTP is required to avoid the otherwise resulting bridge loop. xSTP blocks one of the links, so it can't be used any more. The routers (L3) can only use what the switches (L2) allow them to. You have two basic choices: (best) Migrate to routed links. Routed links can be all activate without a problem. Additionally, ...


2

The only routing protocol in common between R3 and R2 is RIPv2, so that is the only way that R2 can learn the R3 loopback because there does not seem to be any route redistribution on any of the routers. R4 can learn the R3 loopback from EIGRP, but it cannot advertise it via OSPF unless you redistribute the route from EIGRP to OSPF. Each routing protocol ...


2

You're correct. Let's illustrate it with a few facts. Section D of RFC2328 states clearly that all OSPF protocol exchanges are authenticated. The AuType field is included in all OSPF packet types (this is important): All OSPF protocol exchanges are authenticated. The OSPF packet header (see Section A.3.1) includes an authentication type field, and 64-bits ...


2

Yes you are correct,as per RFC 5613, a special TLV is used for cryptographic authentication (CA-TLV) of the LLS data block. Which you can see at the bottom of your last screenshot. This TLV is to be only included in the LLS block when cryptographic authentication is enabled on the corresponding interface. The message digest of the LLS block is calculated ...


2

According to examples across the web, if two routers are directly connected with an ethernet cable, this is a point-to-point network (which totally conforms to rfc point-to-point definition). but if there is a switch between routers, that makes a broadcast network. how it is concluded from rfc definition. You can define a network by the topological ...


2

You have some problems: The two addresses, 10.1.2.6/30 and 10.1.2.2/30 are in two different networks, but they need to be in the same network for direct router connection (see this two-part answer for the specifics). Next, never use the ip default-gateway command on a router the has routing enabled (see this answer for the details). Also, the Edge router ...


2

Network topology might affect the choice of a routing protocol and make one protocol more desirable than another. The most common example is a large hub and spoke topology. In that topology, EIGRP can handle routing updates more efficiently than OSPF. The bigger difference in protocols comes down to the practical implementations of them. As others have ...


2

is there any condition where OSPF is better used than anything else (e.g EIGRP), or what kind of network is suitable using OSPF? In a heterogeneous network, all the router vendors will support the open-standard OSPF. For EIGRP, you would need a Cisco-only network, and it would close you from using routers from any other vendors. It would also create big ...


2

You can have multiple ASBRs redistributing their (set(s) of) external routes into the OSPF domain. The routes the various ASBRs generate/inject might be identical, partially overlapping or even completely disjoint, and yes, there can be multiple ASBRs generating/injecting a default route. The other routers will ingest these LSAs, but of course will apply ...


2

The cost on the interface may only be a small part of the total cost for using the interface. The cost to a destination is cumulative, and the local costs may only be a small part of the total cost. You simply cannot tell which interface is preferred for a given destination just by the local cost on an interface. For example, the interface with the cost of ...


1

I got it all working now, here is the config: HK_Office: interface Loopback0 ip address 10.10.0.1 255.255.255.0 ! interface Loopback1 ip address 192.168.10.1 255.255.255.0 ! interface FastEthernet1/0 ip address 172.16.0.1 255.255.255.0 duplex auto speed auto ! router ospf 10 log-adjacency-changes passive-interface default no passive-interface ...


1

Add no auto-summary to your BGP configurations


1

I'm adding an answer to the question as the supplier found the solution to the issue we were experiencing. I'm merely adding here his explanation, it could be useful to anyone else incurring in this event. Thank you again! [13 April 2021 12:31] I found the solution that you need to add the Virtual MAC address on one of the interfaces of both EDR. Please ...


1

While IS-IS and OSPF work very similarly on the routing level (link-state, Dijkstra), likely the most important difference is that OSPF sits on top of IP (L3) while IS-IS sits on top of the data link layer (L2). Accordingly, IS-IS requires L2 connectivity between peers which isn't always available (e.g. when L3 tunneling is used with VPN or similar). ...


1

A broadcast network is what you've got on an Ethernet switch (or multiple connected ones): any node can talk to any other directly. If there are VLANs, each VLAN represents its own broadcast network/domain. The distinction that RFC makes is the contrast between a broadcast network with point-to-multipoint addressing, a non-broadcast network with P2MP, and a ...


1

Could be old routes from recent changes, try clearing the routing table: clear ipv6 ospf all


1

When a router interface loses its link - for whatever reason - OSPF communicates that new link state to the other routers. Accordingly, the routers remove the corresponding route from their routing tables (if it was a shortest path). If other gateways to the connected subnet exist (with previously longer paths) those will be used instead. With no gateway ...


1

If three routers are using OSPF and one router is using static routing To ensure communication among this networks, the solution is redistribution Redistributes the routes into static to OSPF .


1

Chossing a routing protocols for a setup is depends upon design of networks , scalablity , nature of business , size of business , potential expansion in future , business requirements , cost , number of application hosted , number of sessions per seconds ,


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