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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Possible explanations for a large hop in latency
Even if they are decrementing TTL inside of their MPLS core, the TTL expired message still has to traverse the entire MPLS LSP (tunnel), so the latency reported for each "hop" is in fact the latency of the last hop in the MPLS network. Always. Sam Robert Richardson wrote: They probably don't propagate TTL w/in their MPLS core. Depending on how they have MPLS implemented, you may only see 2 hops on the network; the ingress and egress routers. If the ingress router was in NYC and the egress in Seattle, you could understandably expect a large jump in RTT.
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