6

IOS will not use another BGP route for recursive lookup for a BGP route. This is somewhat hinted at in the "Why Routers Ignore Paths" section of the "BGP Best Path Selection Algorithm" documentation: [Routers ignore] paths for which the NEXT_HOP is inaccessible. Be sure that there is an Interior Gateway Protocol (IGP) route to the ...


4

Routers learn networks by one of three methods: directly attached - this network can directly be talked to through one the router's interfaces static route - remote network reachable through another router/gateway is configured by a static configuration entry; static routes need to point to an interface in a common network between the two routers routing ...


3

Static routing is also referred as one to one routing . Administrative distance of AD value is 1 . Next hop is path towards next hop router . Example below . #IP route destination 19.X.X.X subnet mask 255 X X.X.X next hop " next network devices exist interface "


3

Not all layer-2 protocols use MAC addressing (what do you do for those that do not?), and of those that do, there are some that use 48-bit MAC addresses and some use 64-bit MAC addresses. You cannot have the network protocol depend on any specific data-link protocol. A host will use whatever method, e.g. ARP or NDP, to convert the network address to the data-...


3

Maximus hop counts depend upto routing protocols used in topology for routing traffic .. EIGRP has a maximum hop count of 224 and a default maximum hop count of 100. For Routing information protocol (RIP) maximum hop count is 15 . For OSPF hop count is considered to be unlimited .we feasible to add unlimited hops while building networks with OSPF routing ...


2

What you need to understand about the IPv4 TTL or IPv6 Hop Limit value is that a router (supposed to be the end-host, too, for IPv4, but most OSes don't do this) will decrement the IPv4 TTL or IPv6 Hop Limit when it receives a packet, and it will discard the packet if it decrements to 0. That means that a packet with a IPv4 TTL or IPv6 Hop Limit of 1 ...


2

The answer is simply that different hosts are on different networks, as @radhil says, and you have to take longer paths to get there. Different providers have their own rules about whose traffic they are willing to carry, so the path you take may be chosen for business reasons, not necessarily because it's the shortest. Try running the tracert command ...


2

See the JUNOS route selection process and you'll find that you end up at rule 9: For BGP, prefer the path whose next hop is resolved through the IGP route with the lowest metric. Note: A path is considered a BGP equal-cost path (and will be used for forwarding) if a tie-break is performed after the previous step. All paths with the same neighboring AS, ...


2

I'll answer with a quote from Time Bandits: Robin Hood: How long have you been a robber? Strutter: Four foot one. [ https://www.imdb.com/title/tt0081633/quotes?item=qt0279226 ] Routing is a layer-3 operation. Thus, route tables contain layer-3 information. A MAC is a layer-2 address. You can't put that in a route table, because it isn't a layer-3 address. ...


1

A slight variant to Ron's view: Routing is a fundamental concept of the network-layer (L3). Accordingly, an L3 node trying to send a packet needs to find a path to the destination. For that, it queries its local routing table resulting in the gateway to be used. If there is none, the packet is dropped. If the destination is on a shared network then it is its ...


1

First Scenario: A server 172.16.0.50/24 open a connection to server 172.16.100.10/24: Package have as his next hop the default gateway (172.16.0.1/24) once is reach this router, package get a redirect to the new next hop (172.16.0.2) to reach the correct network, after that will reach his destination on host 172.16.100.10. Answer to this package will start ...


1

I haven't tested this, but I assume your attempts don't work because you don't have any match clause to tell the F5 when to apply this rule. So it should be something like this: when CLIENT_ACCEPTED { nexthop internal 10.10.0.1 }


1

Does that mean it reached it target destination? Yes - as far as you can tell by using traceroute. When pasting the IP address from hop 13 in the browser it couldn't connect. Shouldn't this be the ip address of one of the google servers? The displayed address is the address that rejected the used UDP probe (which is expected for the final destination). ...


1

Traceroute can be used to spy out a network. There are usually 2 ways, companies deal with blocking it. Fist: Devices will be configured to not reply to TTL=0 packets. But they will still allow other devices to send TTL=0 packets thru the device itself (seen in your example as step 10) Second: Devices wont reply to TTL=0 packets and it will block every TTL=...


1

Cisco routers can load balance across equal-cost routes, but you don't give a router make/model. The RFC for RIPv2, RFC 2453, RIP Version 2, actually discusses equal-cost routes: If the new metric is the same as the old one, it is simplest to do nothing further (beyond re-initializing the timeout, as specified above); but, there is a heuristic which ...


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